Lok Sabha Question No. 141 (STARRED), answered on 2019-11-28
Subject: Incidents of Air Miss
Ministry: CIVIL AVIATION
Asked by: Bhartruhari Mahtab, Rahul Ramesh Shewale

## GOVERNMENT OF INDIA MINISTRY OF CIVIL AVIATION LOK SABHA

STARRED QUESTIQN NO. : 141 (To be answered on the November 2019) 28th

## INCIDENTS OF AIR MISS

## *141. SHRI BHARTRUHARI MAHTAB SHRI RAHUL RAMESH SHEWALE

## Will the Minister of CIVIL AVIATION

be pleased to state: -

- (a) whether it is a fact that the Delhi Airport has witnessed maximum number of incidents of air miss during each of the last three years and the current year;
- (c) whether the Government has conducted any enquiry in such cases;
- (b) if so, the details thereof along with the details of such incidents reported in the country during the said period, State/UT/ airline-wise;
- (d) if s0, the details and the outcome thereof and if not, the reasons therefor; and
- (e) the other steps taken/being taken by the Government in this regard?

## ANSWER

Minister of State (IC) in the Ministry of CIVIL AVIATION

(Shri Hardeep Singh Puri)

(a) to (e) A statement is laid on the Table of the House.

*****

Statement referred in reply to Part (a) to (e) of Lok Sabha Starred Ques. No. 141 regarding "Incidents of Air Miss to be answered on 28.11.2019\_

(a) to (d) During the last three years and the current year (till 22.11.2019) a total of 34 Air Miss have occurred in the Delhi Flight Information Region (FIR): All Air Miss incidents' investigations are carried out either by the Aircraft Accident Investigation Bureau (AAIB) or by the Directorate General of Civil Aviation (DGCA) depending upon the severity of the incident Safety recommendations emanating from the investigation reports are followed up for implementation with the concerned agencies so as to prevent recurrence of similar incidents in future. The details of such incidents reported in the country during the said period, State/UT wisel Airline wise is attached at Annexure A.

*****

- (e) Further steps taken in this regard are attached at Annexure B.

| SNo   | Date       | Placel Unit      | Brief Details of Incident and outcome                                                                                                                                                                                                                                                                                                                                                                                                                                           |
|-------|------------|------------------|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| 1     | 13.01.2016 | Delhi RSR        | Air Miss occurred between Vistara flight VTI830, A320, Hyderabad to Delhi and Air Asia flight IAD2222 , A320, HAL to Delhi: Outcome of incident- The controller was operating in an environment having limited airspace for holdinglorbiting of aircraft due local flying at Gwalior airspace. VTI830 was instructed to descend to FL280 overlooking the conflicting traffic IAD2222 which was maintaining FL29O. The radar controller could not detect the conflicting traffic |
| 2     | 21.01.2016 | Delhi TAR        | Air Miss occurred between Indigo flight IG0495, A320, Delhi-Ranchi and Air India flight AlC466, A321, Cochin to Delhi Outcome of incident- The controller intended to give descend to A/C446 to FL8O but inadvertently issued descend clearance to other aircraft A/C466. Also read-back by AIC466 was not corrected by the controller due to his expectancy bias. Minimum lateral separation was 2.2 NM when vertical separation was 700 feet                                  |
| 3_    | 25.02.2016 | Delhi RSRI TAR   | Air Miss occurred between Spice Jet flight SEJ2624, Q400, Jaipur to Delhi and Air Outcome of incident- Loss of situational awareness by RSR (SW) controller and his clearance to descend to GOW319 to the same level as maintained by SEJ2624 which was being held by TAR controller were probable causes Go                                                                                                                                                                    |
| 4     | 03.05.2016 | Delhi TAR        | Airmiss occurred between Air India flight AIC 011, A321, Ahmedabad to Delhi and Indigo flight IGO 684, A320, Hyderabad to Delhi. Outcome of incident- The incident occurred when IG0684 descending from FL1OO to 2800 feet, did not comply with the ATC instruction to turn right on heading 075 and continued on previously assigned heading 015. It came in conflict with AICO11 descending to FLO8O.                                                                         |
| 5_    | 22.08.2016 | Delhi TAR        | IGO528, A320, Pune to Delhi: Outcome of incident- Inadvertent use of wrong call-sign by the controller and his inability to identify the error from the read-back; and   inappropriate   delaying   technique   bringing two aircraft in conflicting situation were causal factors                                                                                                                                                                                              |
| 6.    | 01.09.2016 | Delhi RSR        | Airmiss occurred between Alliance Air flight LLR9613, ATR72, Delhi to Jammu and Thai air flight THY713, A330. Dhaka to Istanbul: Outcome of incident- Clearance to climb LLR9613 to FL360 while overlooking the conflicting traffic THY713 was the causal factor. Inadequate surveillance by RSR (W) controller, non-transfer of communication of THY713 in timely manner by controller:                                                                                        |
| 7     | 21.10.2016 | Jaipur TowerIAPP | Airmiss occurred between Jet Airways flight JAI2053, B737 , Mumbai to Jaipur and Air India Express flight AXB195, B737, Jaipur to Dubai. Outcome of incident- The departing aircraft AXB195 from Jaipur was cleared to Dubai unrestricted climb to FL2OO. The incident took place when AXB195 came in conflict with arriving aircraft JAI2053 which was instructed t0 descend to FLO65                                                                                          |

|     |            |               | The relieving controller who issued initial ATC clearances to arriving and departing aircraft did not ensure separation  minimum and relieving controller also did not  identify the emerging   conflict   situation and amend the clearances in  timely manner  for conflict resolution:                                                                                                                                                                                                                                                                             |
|-----|------------|---------------|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
|     | 02.11.2016 | Delhi         | Airmiss occurred between KLM airways flight KLM811, B787, Amsterdam to Manchester and Indigo flight IGO977, A320, Delhi to Hal: Outcome of incident- Aircraft was instructed by controller to climb to FL35O without considering the crossing traffic KLM811 at FL35O. The controller also overlooked the conflict between the aircraft and breach in separation occurred between IGO977 and KLM811.                                                                                                                                                                  |
| 9_  | 10.11.2016 | Delhi RSR     | Airprox between AIC142 & AIC154 Airmiss occurred between Air India flight AIC 142, B787 , Vienna to Delhi and Air India Outcome of incident- subsequently from FL21O to FL19O. The last transmission of descent from FL21O to FL19O was not read back by A/C154 and it descended and maintained FL21O. Controller did not corrected readback error by the pilot.                                                                                                                                                                                                      |
| 10. | 21.12.2016 | Delhi RSR (E) | Airmiss occurred between Air India flight AIC A319, Patna to Delhi and AIC 236, A320, Gaya to Delhi. Outcome of incident- The descent clearances given to A/C236 without considering the closure speed of the preceding aircraft was the causal factor to the incident: 408,                                                                                                                                                                                                                                                                                          |
| 11_ | 30.01.2016 | Delhi TAR- SA | Airmiss occurred between Air India flight AIC 543, A321, Hyderabad to Delhi and Jet Airways flighjt JAI833, B737 , HAL to Delhi. Outcome of incident- Wrong selection of frequency by the flight crew of A/C543 and misleading report from AlC543 that she is established on runway 11 were causal factors_                                                                                                                                                                                                                                                           |
| 12  | 19.02.2016 | Delhi Tower   | Airmiss occurred between Jet Lite flight JLL 4237 , B737 , Chandigarh to Delhi and Indigo flight IGO 605, A320, Delhi to Kolkata. Outcome of incident- Departing aircraft JAI365 was cleared to line up runway 29 when arriving aircraft JLL4237 was established on localizer RWY29 and 5.5 NM: JAI365 was issued take off clearance when JLL4237 was 4NM from touch down: Landing clearance was issued to JLL4237 and JA/365 was airborne However JLL4237 initiated missed approach: Non-adherence to published missed approach procedure by flight crew of JLL4237. |
| 13. | 17.04.2017 | Delhi TAR     | Airmiss occurred between Indigo flight IGO303, A320, Delhi to Hyderabad and Air India flight AIC 411, A320, Delhi to Lucknow. Outcome of incident- AIC411 departure from runway 11 was instructed by controller to climb to FLO9O. The conflicting traffic was IGO303, which departed from runway 09 and was maintaining FLO8O. Both aircraft were following standard and their flight were crossing each. path                                                                                                                                                       |
| 14_ | 21.04.2017 | Delhi         | Airmiss occurred between Jet Airways flight JAI597 , B737, Muscat to Delhi and Vistara Outcome of incident- VTI811 was given take-off was given when arrival JA/597 was 5.5NM. VTI811 commenced its takeoff run when JAI597 was 4NM touchdown: JAI597 initiated go-around at 3NM from touchdown due to high approach and VTI811 also took off from runway 11. Observing the conflict, the Tower controller passed corrective traffic information to VTI811_ The Approach controller took avoiding action but infringement of separation could not be avoided. from    |

| 15.   | 17.06.2017   | Delhi RSR      | Airmiss   occurred Delhi and  flight IG04085, A320, Delhi to Trivandrum: Outcome of incident- IGO652 was descending to FL180 and was deviating to the right due to weather. IG04065 was climbing to FL29O and requested  for left  deviation due to weather   which was approved. IG0852 requested for left deviation on heading 350. The controller tried to resolve the conflict by issuing heading instructions, which were not accepted by the aircraft due to weather leading to breach in separation. Both aircraft reported RA                                                                      |
|-------|--------------|----------------|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| 16.   | 27.06.2017   | Delhi TAR      | Airmiss occurred between Indigo flight IGO 956, A320, Mumbai to Delhi and Jet Airways flight JAI568, B777 , Delhi to Dammam: Outcome of incident- JAI568 a departure Delhi was climbing to and maintaining FL1OO. Arriving IG0956 descending to FL11O. Later IGO956 was advised to rejoin the star and maintain FL1OO. Though the aircraft was descending to FL11O but the controller inadvertently advised her to maintain FL1OO, which brought IGO956 into conflict with JAI568. from                                                                                                                    |
| 17 .  | 16.07.2017   | Delhi RSR      | Airmiss occurred between Air Canada flight ACA04ZD, B787 , Toronto to Delhi and Indigo flight IGO048, A320, Dubai to Delhi: Outcome of incident- ACAO4ZD at FL39O was given descend to FL340 and advised to hold enroute. IGO048 at descend to IGO048, the controller realized that there was a conflicting traffic JAI763 at FL3SO. In order to resolve the conflict; IGO048 was given further descend to FL340 without                                                                                                                                                                                   |
| 18.   |              | Delhi Tower    | Airmiss occurred between British Airways flight BAW143, B787 , Heathrow to Delhi and Thai Air flight THA316. B777 , Delhi to Bangkok: Outcome of incident- THA316 was given take-off clearance when BAW143 was 4NM from touchdown_ It was observed that THA316 was continuously moving on runway at 10 kts without actually rolling for a significant period of 35 seconds. By the time THA316 got airborne, BAW143 initiated go-around at 1NM which resulted in breach in separation between the aircraft: The controller could have prevented the airprox by timely cancellation of departure of THA316. |
| 19.   | 06.07.2017   | Delhi TAR (AD) | Airmiss occurred between Alliance Air flight LLR617, ATR72, Delhi to Jabalpur and Indigo flight IGO211, A320, Delhi to Bhubneshwar: Outcome of incident- LLRG17 after departure turned left instead of assigned right turn: The incident occurred due to wrong turn executed by the flight crew:                                                                                                                                                                                                                                                                                                           |
| 20.   | 01.09.2017   | Delhi TAR      | Airmiss occurred between Air India flight AIC 432, A319, Lucknow to Delhi and Cargo Airlines flight TZS570, B747 , Kandahar to Delhi. Outcome of incident- AIC432 was instructed to climb to FLO6O. However information showed AIC432 maintaining FLO63. When queried AIC432 reported maintaining FLO6O. Since A/C432 was in close proximity to TZS57O, who was maintaining FLO7O, a conflict alert was generated between the aircraft:                                                                                                                                                                    |

| 21 .   | 23.01.2018   | Delhi   | Air Miss occurred between Vistara flight VTI812, A320, Delhi to Varanasi and Air Charter flight VTFAE, B2OO, Delhi to Patna. Outcome of incident- The longitudinal separation was reduced to 6.71 NM due to the speed differential between slow moving aircraft VTFAE ahead and succeeding faster moving aircraft VTI812.                                                                 |
|--------|--------------|---------|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
|        | 13.05.2018   | Delhi   | Air Miss occurred between Jet Aieways flight JAI818,B737 , Delhi to Lucknow and Go Air flight GOW805, A320, Bengaluru to Lucknow: Outcome of incident- JAI818 came in conflict with GOW805.                                                                                                                                                                                               |
| 23 .   | 25.05.2018   | Delhi   | Air Miss occurred between Jet Airways flight JAI316, B739 , Delhi to Mumbai and Jet Airways flight JAI837,B737 , Delhi to Udaipur: Outcome of incident- Separation breach was due to the speed differential between the two aircraft The lateral separation reduced to 9.7 NM while the vertical separation was 600 feet                                                                  |
| 24.    | 30.05.2018   | Delhi   | Air Miss occurred between Spice Jet flight SEJ130,B738, Kolkata to Delhi and Alliance Air flight LLR945,AT42, Delhi to Dehradun: Outcome of incident- LLR945 was maintaining FL1OO and SEJ13O was descending to FL1OO The vertical separation reduced to 500 feet when both aircraft were laterally 2 NM apart:                                                                           |
| 25.    | 29.06.2018   | Delhi   | Air Miss occurred between Go Air flight GOW174,A320, Pune to Delhi and Air India flight AIC102,BZ7W, New York to Delhi: Outcome of incident- Breach of separation occurred when both the aircraft were in the process of executing the turn: The lateral separation between both the aircraft was reduced to 2.1 NM when both the aircraft were at same level (Required separation 3 NM). |
| 26.    | 17.10.2018   | Delhi   | Air Miss occurred between   Indigo flight IGO2299,4320, Udaipur to Delhi and Jet Airways flight JAI928,B737 , Bhopal to Delhi: Outcome of incident- The inter-arrival spacing between the two rendered insufficient                                                                                                                                                                       |
| 27 .   | 25.10.2018   | Delhi   | Air Miss occurred between Air India flight A/C646,A320 , Jodhpur to Mumbai and Indian Air Force   flight VUAUH,C17, Phalodi to Sulur: Outcome of incident- A breach of separation occurred between A/C646 & VUAUH at F250.                                                                                                                                                                |

| 28 .   | 22.12.2018   | Delhi   | Airprox between flight NCR840, B744, Bagram to Hongkong & flight EVAO61, B7ZW, Bangkok to vienna & flight KLM875, B77W, Amsterdam to Bangkok Outcome of incident- traffic at FL320 on the same route_ NCR840 had requested for climb to higher level (FL39O) , but only FL35O was available for it: NCR840 was accordingly informed and instructed to "STANDBY FOR HIGHER" by the controller. The crew acknowledged by replying "STANDING BY." After sometime NCR840 was observed climbing and the radar controller immediately instructed avoiding heading (Left 090) to NCR840 w.r.t: EVAO61 . Simultaneously, the controller also instructed EVAO61 , reciprocal traffic at FL32O, to turn left (on heading 270) for expeditious resolution of the conflict: However, while turning left (on heading 090), NCR840 climbed to FL33O, resulting in loss of standard separation with KLM875. Later , the controller instructed NCR840 to descend to FL32O for early restoration of standard vertical separation with KLM875. When NCR840 commenced descend (to FL320) EVAO61 was in the turn (heading 270) and standard separation with EVAO61 also infringed: got   |
|--------|--------------|---------|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| 29.    | 16.01.2019   | Delhi   | Outcome of incident- An occurrence of loss of separation occurred between departing AIC411 and JAI364 carrying out missed-approach at Delhi Tower.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   |
|        | 30.05.2019   | Delhi   | B789 Narita to Delhi Outcome of incident- as both were on converging flight paths.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   |
| 31 .   | 05.08.2019   | Delhi   | Outcome of incident- VTI794 was cleared to descend to FL1OO and SEJ104 was given climb to FL12O. Due to the left deviation of VTI794, both the aircraft became conflict The standard vertical separation was reduced to 800 feet when both the aircraft were 2.27 NM apart:                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          |
| 32 .   | 23.08.2019   | Delhi   | Loss of_separation between Go Air_GOW204 A320, Leh to Delhi and_Go_Air GQWZ15A320_Delhi toLeh Outcome of incident- GOW715 maintaining FL35O was changed over by Delhi ACC to Northern control (IAF Unit) . In-bound flight GOW204 was given descend from FL36O to FL3OO when both the aircraft were approximately 7 NM apart in opposite direction: The standard vertical separation was reduced to 700 feet when the lateral separation did not exist_                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              |
| 33.    | 15.02.2019   | Delhi   | Outcome of incident- The incident occurred due to unauthorized descend of IG0417, which was intended for IGO032_                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                     |

| 34.   | 18.10.2019   | Delhi   | VTigg8A320Pune_to Delhi Outcome of incident- IGO129 TOOK A RIGHT TURN WITHOUT PRIOR INFORMATION TOWARDS VTI998 WHICH WAS MAINTAINING F120.   |
|-------|--------------|---------|----------------------------------------------------------------------------------------------------------------------------------------------|

| 35.   | 04.01.2016   | Ahmedabad RSR   | Air Miss  occurred between Air India flight AIC634, A319, Bhopal and Jet Lite flight JLL4054, B737 , Indore to Mumbai: Outcome of incident- Inadequate surveillance by the RSR controller in south-east sector at the time of incident and Tunnel vision of controller; as the controller was involved in resolving the traffic in the north sector of Ahmedabad and not keeping surveillance over the airspace where conflict between aircrafts was developing:                                                                                                                        |
|-------|--------------|-----------------|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| 36.   |              | Mumbai TAR      | Air Miss occurred between Indigo flight IG0483, A320, Chandigarh to Mumbai and Jet Outcome of incident- Airprox incident occurred between IG0483 and JA/472 in Mumbai TAR, wherein IGO483 picked up the descend clearance issued to JLL4380 and confirmed with controller with non-standard phraseology to which the controller also gave positive clearance_ At this point of time, the controller could not detect the hear-back error. Vertical separation reduced to 900 feet vertical when longitudinal separation was 2.8NM                                                       |
| 37 .  | 20.03.2016   | Chennai         | Air Miss occurred between Emirates flight UAE 547, B777 , Chennai-Dubai and Jet Airways flight JAI2307 , ATR72, Chennai-Bangalore. Outcome of incident- The incident occurred when UAE547 who was climbing to FL2OO came in conflict with preceding aircraft JAI2307 climbing to FL16O on same The separation between the aircraft on diverging headings reduced to 4.7NM laterally and 2O0Ft vertically. in identifying conflict and taking avoiding action by TAR controller is the probable cause_ path: Delay                                                                       |
| 38 .  | 26.03.2016   | Agartala Tower  | Air Miss occurred between Jet Airways flight JAI2876, ATR72, Silchar to Kolkata and Defence aircraft flight VUDBY; AN32 , Agartala to Guwahati. Outcome of incident- Assumption on part of the Agartala controller that Aircraft from Silchar will reach FL14O by 30 NM from Silchar. Also Lack of situational awareness on part of Agartala Controller as the controller never checked the distance of JAI2876 and VUDBY from Silchar or Agartala:                                                                                                                                     |
| 39.   | 29.03.2016   | Chennai Tower   | Air Miss occurred between Air Mauritius flight MAU746, A340, Bangalore-Chennai and Spice Jet flight SEJ614, B737 , Chennai to Mumbai: Outcome of incident- SEJ614 was issued take off clearance twice when MAU746 was at 2.5 NM & 1 NM from touchdown and thereafter MAU746 was issued landing clearance at less than NM from touchdown, while SEJ614 was still rolling on the runway_ MAU746 carried out missed approach observing the preceding departure SEJ614 still on takeoff roll leading to conflict: Lack of situational awareness on part of Controller is the probable cause |
| 40_   | 30.04.2016   | Chennai ASR     | Airmiss occurred between Indigo flight IGO 889, A320, Bangalore to Chennai and Jet Airways flight JAI2736, ATR72, Bangalore to Chennai: Outcome of incident- Incident happened in Chennai when IGO889 while descending came in conflict with JAI2376, as the TAR controller inadvertently assigned FLO7O to IGO889 while simultaneously talking to ATC driver on phone.                                                                                                                                                                                                                 |

| 41 .   | 01.05.2016   | Chennai RSR              | Airmiss occurred between Indigo flight IGO316, A320, Guwahati to Chennai and Air India flight AIC 771, A319, Kolkata to Chennai: Outcome of incident- The incident happened when RSR controller working in UBL sector at Chennai used the wrong call sign and descended IG0316 to FL26O instead of IG0357 .                                                                                                                                                                                                                                |
|--------|--------------|--------------------------|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| 42     | 06.05.2016   | Chennai                  | Airways flight JAI 613,B737 , Chennai to Port blair. Outcome of incident- The incident occurred when Tower controller, who wanted to give revised instructions to JAI613 to climb, used the call sign of SEJ3592.                                                                                                                                                                                                                                                                                                                          |
| 43.    | 07.05.2016   | Chennai                  | Airmiss occurred between Air Asia flight IAD177, A320, Delhi to Bangalore and Indigo flight IGO333, A320, Bhubaneswar to Bangalore: Outcome of incident- The incident occurred when IAD177 mistook the descend clearance meant for IG0333 and started descending FL37O. It came in conflict with a converging traffic IGO333 which was descending from FL360 to FL320. Inability of the concerned controller in detecting the readback by the wrong aircraft and Delay by concerned controller in taking appropriate avoiding action. from |
| 44_    | 20.05.2016   | Bengaluru                | Airmiss occurred between Indigo flight IGO 233, A320, Bangalore to Chennai and Spice Outcome of incident- The Incident happened when SEJ1069 at FL2OO came in conflict with departing IGO233 aircraft which was initially cleared to climb to FL19O, requested FL21O that was approved by the controller: On-the-Job training was being imparted when the incident took place. Error on part of the trainee controller and the RSR controller in not taking into consideration the conflicting traffic.                                    |
| 45_    | 07.07.2016   | Mumbai OCC               | Airmiss occurred between Israel Airlines flight ELY071, Tel Aviv to Mumbai and Air India Express flight AXB35O, B737 , Muscat to Calicut: Outcome of incident- Non-detection of conflict by the OCC-South controller due non-updation of position reports estimates on flight progress strips.                                                                                                                                                                                                                                             |
| 46.    | 11.08.2016   | Chennai RSR (UBL Sector) | Airmiss   occurred between  Spice Jet flight SEJ511 , B737 , Hyderabad to Cochin and Emirates flight UAE433, B777 , Brisbane to Dubai. Outcome of incident- SEJS11 had mistakenly taken the climb instructions meant for SEJ514 to FL36O, and hence continued climb above its cleared level (i.e: FL340) resulting in AIRPROX. Error in listening to controller's instructions on part of the crew of SEJ511 due to which mistook the climb instructions meant for SEJ514 and continued climb above the cleared level: they                |
| 47 .   | 22.10.2016   | Goa                      | Airmiss occurred between Go Air flight GOW141, Mumbai to Goa and Spice Jet flight SEJ3604, Goa to Hyderabad. Outcome of incident- RADAR was unserviceable at Goa and Aircraft was adviced to follow VORIDME RWY 26 approach whereas_aircraft continued to follow the STAR leading to the Airprox with departing aircraft SEJ 3604 at FL21O.                                                                                                                                                                                                |
| 48 _   | 04.11.2016   | Mumbai                   | Airmiss occurred between Air Arabia  flight ABY401 , A320, Sharjah to Mumbai and Emirates flight UAE5O8, B777 , Dubai to Mumbai. Outcome of incident- The descend given to two aircraft without considering the conflicting traffic ABY401 was the causal factor to the incident:                                                                                                                                                                                                                                                          |
| 49_    | 10.11.2016   | Goa                      | Airmiss occurred between Go Air flight GOW14T, Mumbai to Goa and Spice Jet flight SEJ141 , Delhi to Goa: SEJ was cleared to descent to FL21O while holding and Go air flight G8-141 also maintaining FL 210                                                                                                                                                                                                                                                                                                                                |

|      |            |             | Airmiss occurred between Jet Airways flight JAI 358, B737 , Delhi to Mumbai and Jai 536, B737 Mumbai to Dubai.                                                                                                                                                                                                                                                                                                                                      |
|------|------------|-------------|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| 50.  | 13.11.2016 | Mumbai      | Outcome of incident- Runway 14 was up RWY14 and receiving take-off clearance requested 30 seconds more for departure due to wake- turbulence generated by previous heavy departure. JAI358 on finals RWY14 was instructed to go around, and JAI536 also took-off simultaneously resulting in airprox between both aircraft. Allowing the take-off of JA/536 after the additional 30 seconds on runway was the causal factor to the incident: lining |
| 51_  | 02.12.2016 | Nagpur      | Airmiss occurred between Jet Airways flight JAI792 , B737 , Indore to Delhi and Alliance Air flight LLR628, ATR72, Gwalior to Mumbai. Outcome of incident- The incident occurred due to human error on part of the Surveillance Controller in giving unintentional climb to FL180 to JAI 792. The controller wanted to clear it to climb to FL16O but he transmitted FL180 by slip which could not be detected by him.                              |
| 52.  | 11.12.2016 | Kolkata     | Airmiss occurred between flight IGO6619,A320, Kolkata to Hyderabad and Silk Air flight SLK488, B737 , Singapore to Kolkata. Outcome of incident- IGO 6819 was taking-off from RWY19L and at that time SLK488 was o finals of same runway: IGO6619 departed. Even though SLK488 was given landing clearance. Indigo ~                                                                                                                                |
| 53.  | 14.12.2016 | Chennai ASR | Airways flight JAI 2344, ATR72, Madurai to Chennai. Outcome of incident- Arriving aircraft IGO3151 descended below its assigned level and hence came in conflict with preceding slow moving aircraft; JA/2344. Controller not ensuring readback of issued descent clearance to flight crew by the TAR controller: Lack of appropriate action on the part of controller on system generated warnings.                                                |
| 54_  | 19.12.2016 | Mumbai      | Airmiss occurred_between Etihad flight ETH628, B787 , Ethiopia to Bangkok and Neos flight NOS710, B767 , Milan to Male. Outcome of incident- ETH628 was descended from FL39O to FL330 due crossing traffic with respect to another traffic on route_ Controller revised direct route of ETH628 was conflicting with the flight path of NOS710, both now maintaining same level.                                                                     |
| 55.  | 20.02.2017 | Varanasi    | Airmiss occurred between Air India flight AIC763, A321, Kolkata to Chennai and Turkish Air flight THY713, A330, Dhaka to Istanbul. Outcome of incident- THY713 and AIC763 converged over LKN at same level FL340 and both aircraft were released to Delhi ACC without identifying the conflict over LKN. The separation between the aircraft reduced to 8.7NM.                                                                                      |
| 56.  | 21.02.2017 | Chennai     | Airmiss occurred between Emirates flight UAE53O, B777 , Dubai to Cochin and Oman Air flight OMA376, B787 , Colombo to Muscat Outcome of incident- UAE53O was given descent initially FL39O to FL37O. Subsequently when UAE53O was approaching FL37O the controller   cleared it to FL340, overlooking the opposite direction traffic OMA376 at FL360. from                                                                                          |
| 57 . | 23.03.2017 | Chennai UBE | Airmiss occurred between Go Air flight GOW451, A320, Chennai to Pune and Indigo flight IGO342, A320, Chennai to Bangalore. Outcome of incident- AIRPROX between GOW451 and IGO342 on crossing route occurred when GOW451 continued climb above its cleared level FL3OO and through the level of IG0342 FL 310 when the radar separation between these two aircraft was not available.                                                               |

| 58 .   | 29.03.2017   | Mumbai TAR   | Airmiss occurred between Kuwait Airlines flight KAC3O1, A330, from Kuwait to Mumbai; and Air India flight AIC 984, A321, Dubai to Mumbai Outcome of incident- At approx: 3NM from touchdown, KAC3O1 requested right turn to lose height with Tower controller which was approved by the Tower controller and the flight was immediately The Approach controller instructed KAC3O1 to fly on Heading 050 and to climb to 3700 feet: The subsequent arrival AIC984 was established on ILS and released to Tower. The variation in compliance by KAC301, led to breach of separation between KAC3O1 and AIC984 i.e. 2.8NM longitudinal and 600 feet vertical.   |
|--------|--------------|--------------|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| 59.    | 13.04.2017   | Nagpur ARSR  | Airmiss occurred between Qatar Airways flight QTR817 , B787 , Hong Kong to Doha and Etihad flight ETD833, A330, Hong Kong to Abu Dhabi: Outcome of incident- Loss of separation occurred when QTR817 was through the preceding aircraft ETD833 which was maintaining FL38O: During descend of the longitudinal separation between QTR833 and ETD833 reduced to 9.1NM at a point when was 10Ofeet. The   controller   took action by  assigning de- conflicting levels and headings to aircraft but the actions were not appropriate to the situation.                                                                                                        |
| 60.    | 16.04.2017   | Varanasi     | Airmiss occurred between Air Asia flight IAD768, A320, Bagdogra to Delhi and Indigo flight IGO398, A320, Delhi to Bagdogra: Outcome of incident- IAD768 was given descend to FL34O, however IAD768 continued descend to FL320, resulting in airprox with opposite direction traffic IGO398 maintaining FL33O.                                                                                                                                                                                                                                                                                                                                                |
|        | 17.04.2017   | Ahmedabad    | Airmiss occurred between Spice Jet flight SEJ5O1, B737 , Ahmedabad to Chennai and Indigo flight IGO643, A320, Delhi to Pune. Outcome of incident- SEJ5O1 was initially cleared to FL25O and subsequently was cleared to climb to FL31O. The controller overlooked the crossing conflicting traffic, IG0643 which was maintaining FL3OO.                                                                                                                                                                                                                                                                                                                      |
|        | 09.06.2017   | Mumbai       | Airmiss occurred between Go Air flight GOW171, A320, Bhopal to Pune and Jet Airways flight JAI392, B737 , Hyderabad to Mumbai: Outcome of incident- GOW171 and JAI392 reported getting Resolution Advisory (RA) near Mumbai Control Area, around 70 NM east of Mumbai:                                                                                                                                                                                                                                                                                                                                                                                       |
| 63.    | 19.06.2017   | Chennai FIR  | Airmiss occurred between Jet Airways flight JAI476, B737 , Goa to Mumbai and Indigo Outcome of incident- Airmiss reported by JAI476, while climbing to FL24O with IGO161 descending to FL23O. IGO161 was in contact with Goa ATC descending to FL280 and was given further descend up to FL23O by Goa ATC, whereas JA/476 had been cleared to climb to FL24O by Goa ATC and released to Mumbai:                                                                                                                                                                                                                                                              |
| 64 .   | 13.08.2017   | Guwahati TAR | Airmiss occurred between Air India A/C889, A321, Delhi to Guwahati and Indigo flight IG06204, A320, Guwahati to Kolkata: Outcome of incident- Arriving A1C889 was descending to 6000 feet and Departing IGO6204 was climbing to FL140. A/C889 was given right heading to 220 by Guwahati radar controller but AIC889 requested left  heading 220 due to weather, which was approved by the  controller, notwithstanding the fact that there was a conflicting traffic.                                                                                                                                                                                       |
| 65.    | 21.08.2017   | Mumbai       | Airmiss occurred between Jet Airways flight JA1426, B737 , Calicut to Mumbai and Air India flight A/C696, A321, Varanasi to Mumbai: Outcome of incident- Loss of separation between Jet Airways, JAI426, and Air India, AIC896 took place in Mumbai approach control when JA/426, who was orbiting right and maintaining flight level FL12O, was given descend to F1OO through the level of A/C696, who was maintain flight level FL11O.                                                                                                                                                                                                                     |

| 66 .   | 05.09.2017   | Delhi ACC (Defense)   | Airmiss   occurred between Indigo flight IG0367 , Delhi to Amritsar and Airforce aircraft (Phonix):                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             |
|--------|--------------|-----------------------|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| 67 .   | 19.09.2017   | Chennai               | 354, B737 , Mumbai to Hyderabad. Outcome of incident- JA/119, JAI2054 and JAI354 proceeding direct to 'GGB' VOR after diverting from VABB for VOHS were maintaining FL31O, FL27O and FL 290 respectively. Separation between JA/119 which was ahead of the other two aircraft with respect to JAI2054 was 11NM when the controller initiated its descent. At that time JA/354 was flying few miles to the left and slightly behind JAI2054. Conflict alert were generated between JA/119 and JAI354 while JA/119 was descending to FL26O.                                                                                                                                                       |
| 68 .   | 19.09.2017   | Mumbai                | Airmiss occurred between Etihad flight ETDGIF, A321, Hyderabad to Abu Dhabi and Jet Airways flight JAI354, B737 , Delhi to Mumbai: Outcome of incident- Loss of Standard Separation occurred between ETD9IF and JAI354 when both aircraft at same level FL3OO, had deviated from the assigned route due to weather. The temporary loss of Situational Awareness by the controller resulted in reduction of Separation between the aircraft:                                                                                                                                                                                                                                                     |
| 69.    | 17.10.2017   | Kolkata               | Airmiss occurred between Indigo flight IG0283, A320, Delhi to Kolkata and Jet Airways flight Jai610, B737 , Kolkata to Mumbai: Outcome of incident- IGO283 was cleared to descend to FL6O and the departure JAI610 after departure, was climbing to FL12O. Subsequently due to change of runway, IG0283 was vectored for RWY19L and became conflicting traffic for JA/610. IGO283 was instructed to stop descend and climb to FL131. JA/610 was instructed to stop climb at FL11O. IG0283 requested whether she can maintain FL12O, which the controller approved. However JAI610 did not stop at FL11O and continued climb up to FL116 resulting in breach in separation between the aircraft. |
| 70.    | 27.10.2017   | Chennai               | Airmiss occurred between Singapore Airlines flight SIA346, A380, Singapore to Zurich and Kenya Airways flight KQA887 , B787 , Bangkok to Nairobi Outcome of incident- Airmiss occurred when SIA346 was given climb from FL340 to FL36O by controller came in conflict with KQA887 , B788 maintaining FL360 and converging over IDASO.                                                                                                                                                                                                                                                                                                                                                           |
| 71 .   | 03.11.2017   | Mumbai                | Airmiss occurred between Emirates flight UAE414, A380, Dubai to Sydney and Etihad Airways flight ETH606 , B777 , Ethiopia to Guangzhou: Outcome of incident- UAE414, operating at FL31O was approved climb to FL33O by Mumbai OCC, resulting in potential conflicting traffic over waypoint LEMAX with the crossing traffic ETH6O6                                                                                                                                                                                                                                                                                                                                                              |
| 72.    | 18.11.2017   | Mumbai                | Airmiss occurred between Flydubai flight FDB445, B737 , Dubai to Mumbai and Qatar Airways flight QTR557 , B777 , Mumbai to Hamad. Outcome of incident- Flight QTR557 was given line-up and take-off  clearance RWY27 . At that time , flight FDB445 was established on ILS RWY27 . The take-off clearance to QTR557 was inappropriate in view of the inadequate inter-arrival spacing between FDB445. FDB445 was instructed to go-around in the interest of safety.                                                                                                                                                                                                                             |
| 73     | 03.12.2017   | Chennai               | Airmiss occurred between Sri Lanka Airlines ALK129, A320, Colombo to Chennai and Air India flight A/C509, A320, Chennai to Cochin: Outcome of incident- AIRPROX between AIC5O9 and ALK 129 occurred when both these aircraft were given continuous climb and descend respectively on converging headings and reciprocal tracks while radar separation between them was not available.                                                                                                                                                                                                                                                                                                           |

|      |            |         | Airmiss occurred between Air India flight AIC408, A321 , Delhi to Cochin and Emirates flight UAE333, B777 , Manila to Dubai.                                                                                                                                                                                                                                                        |
|------|------------|---------|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| 74.  | 05.12.2017 | Chennai | Outcome of incident- On detection of conflict between AIC048 at FL35O and crossing traffic Enter Air flight ENT7095 , Ras al Khaimah to Colombo at FL35O (same level) when the surveillance controller AIC048 a left turn heading 150 and climb to FL36O, it came in conflict with another crossing traffic, UAE333 on same as route of ENT7O95at FL36O. gave                       |
| 75.  | 12.01.2018 | Dhaka   | Airprox between Air Asia flight IAD1E A320, Bengaluru to Guwahati & Air India flight AIC706, A319, Mohanbadi to Kolkata: Outcome of incident- AIC706 at FL34O, while operating in Dhaka FIR under control of Dhaka ACC reported receiving RA w.r.t opposite direction flight IAD1982 via R472, which was also under control of Dhaka ACC in Dhaka FIR: 982 ,                        |
|      | 28.01.2018 | Mumbai  | Air Miss  occurred between  Indigo flight IG0334, A320, Shamshabad to Raipur and Emirates flight UAE353, BZ7W, Singapore to Dubai. Outcome of incident- The separation minima was infringed when IG0334 was given descend from FL33O to FL250 through the level of UAE353 who was maintaining_FL3OO                                                                                 |
| 77 . | 02.02.2018 | Chennai | Air Miss   occurred A320, Lucknow to Bengaluru and Emirates flight UAE545, B7ZW Chennai to Dubai: Outcome of incident- UAE545 climbing to FL320 came in conflict with crossing traffic IGO226 descending to FL260 from FL370                                                                                                                                                        |
|      | 02.02.2018 | Mumbai  | Air Miss occurred between Air India flight A/C668, A321, Trivandrum to Mumbai and Cathey Pacific flight CPA696, A333 Mumbai to Hong Kong: Outcome of incident- CPA696 was given take-off clearance when A/C668 was 02 Nm from touchdown. After few seconds A/C668 was instructed to go-around_                                                                                      |
| 79.  | 07.02.2018 | Mumbai  | Air Miss occurred between Air India flight A/C631, A320, Mumbai to Bhopal and Vistara flight VTI997 , A320 Delhi to Pune_ Outcome of incident- AIC631 was climbing to FL27O and VTI997 was cleared to descend to FL29O. However, VTI997 descended below FL29O. The separation reduced to less than 2NM with no vertical separation_                                                 |
| 80_  | 08.02.2018 | Mumbai  | Delhi to Mumbai and Indigo flight IGO179, A320 Mumbai to Goa: Outcome of incident- The inter arrival spacing between previous arrival and A/C678 was not appropriate to accommodate the departure of IGO179. AIC678 went around at approximately 1NM before touchdown due to non-receipt of landing clearance_                                                                      |
| 81 _ | 17.02.2018 | Chennai | Air Miss   occurred  between Qatari  flight QTR956 , B788 , Hamad to Soekarno-Hatta International Airport and Qatari flight QTR825, A332 Krabi International Airport; to Hamad: Outcome of incident- QTR956 came in conflict with QTR825 maintaining FL380 when QTR956 was given climb from FL370 to FL39O by ATC                                                                   |
| 82   | 18.02.2018 | Mumbai  | Air Miss occurred between Emirates flight 432 , B773, Dubai to Singapore and Indigo flight IG0199, A320 Mumbai to Bengaluru: Outcome of incident- IG0199 was climbing from FL29O to FL39O while UAE432 was maintaining FL35O. The crossing flight path of both aircraft were in conflict: Standard lateral separation reduced to 8.2 NM while vertical separation reduced to 300 ft |

| 83_   | 20.02.2018   | Chennai         | Air Miss occurred between Spice Jet flight SEJ3072 , DH8D , Madurai to Chennai and Indian Air Force flight IFC7201, AN32 Yalanka to Yalanka. Outcome of incident- SEJ3072 climbing to FL23O came in conflict with IFC7201 maintaining FL 210 Horizontal distance between these two aircraft was 14 NM when the vertical distance between them                                                                                                                                                                                                                                                                                                                                                                                         |
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| 84    | 28.03.2018   | Kolkata         | Airprox between Arabia flight ABY539, A320, Sharjaha to Kathmandu and flight KAC285, BZ7W , Kuwait to Dhaka Outcome of incident- The unauthorized descend of ABY539 from FL35O to FL33O resulted in breach of standard separation with same directional traffic KAC285 at FL330.                                                                                                                                                                                                                                                                                                                                                                                                                                                      |
| 85 .  | 19.04.2018   | Chennai         | Air Miss occurred between True Jet flight TRJ433, AT73, Vijayawada to Kadapa and Spice Jet flight SEJ1042, DH8D from Tirupati to Shamshabad Outcome of incident- Both the flights were cleared to operate at FL160 mistakenly by the ATC controller.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  |
| 86.   | 19.04.2018   | Delhi (Defense) | Airprox between flight JAL740, B789, Delhi to Narita & Unknown Traffic (IAF) Outcome of incident- An unidentified traffic squawking 3105 with unverified mode C showing flight level 292 was observed approaching corridor-1 and not in contact. At that time JAL740 was climbing on ATS R460 to flight level 350 and passing flight level 286. As the unidentified   traffic continued to close in towards JAL740, avoidance heading was given to JAL740 to provide was also asked to stop climb: However , there was loss of  separation and   current conflict  warning (CCW) was generated by the Delhi ATM automation system. Later, the unidentified traffic seemed to have switched OFF the Transponder and crossed corridor-1 |
| 87 .  | 20.04.2018   | Muscat (Mumbai) | Airprox between flight KAC3O1, B777 , Kuwait to Mumbai and flight GFA274, A320, Bahrain to Shamshabad Outcome of incident- KAC301 FL37O came in contact through CPDLC at FL35O instead of FL370. GFA274 FL35O had checked RASKI at 2058 and became immediate traffic to KAC3O1. KAC3O1 OOMS supervisor accepted that RASKI (Muscat) controller forgot to give climb to KAC3O1 to FL37O.                                                                                                                                                                                                                                                                                                                                               |
| 88 .  | 23.04.2018   | Kolkata         | Air Miss occurred between Indigo flight IG06488, A320, Kolkata to Delhi and Go Air flight Outcome of incident- GOW585 was given descend from FL37O to FL33O and came in conflict with IG08488 maintaining FL36O.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      |
| 89.   | 30.04.2018   | Chennai         | Air Miss occurred between Emirates flight UAE355, A388, Singapore to Dubai and Qatari flight QTR947, A359, Singapore to Hamad: Outcome of incident- UAE355 was given climb from FL38O to FL4OO. Controllers not aware of the conflicting traffic, QTR947 flying approximately 3 minutes (19 NM) behind UAE355 at the same level i.e. FL4OO.                                                                                                                                                                                                                                                                                                                                                                                           |
| 90.   | 02.05.2018   | Kolkata         | Agartala to Kolkata Outcome of incident- IGO892was descending to FO90 via ATS route B593 and DN6O2 was cleared to climb to FO80 via B593 by Agartala ATC. DN6O2 was advised to request level change from Dhaka ACC. when asked for higher climb. However; DN6O2 continued its climb upto FO83 against the cleared level authorized by the ATC. Both the aircraft were on reciprocal track and reported RA.                                                                                                                                                                                                                                                                                                                            |

| 91 .   | 11.05.2018   | Chennai          | Air Miss occurred between Indigo flight IGO5533,4320, Mumbai to Bengaluru, and Indigo flight IGO279,A320, Bengaluru to Goa Outcome of incident- Controller  authorized   climb of IG0279 to FL32O and IG05533 was   simultaneously                                                                                                                                                                                                                                                                                                                                                                                                                                   |
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|        | 21.05.2018   | Chennai          | Air Miss occurred between Indigo flight IG0647 A320, Vijeg to Bengaluru and Navy aircraft HKO53 Vijayawada to Vijeg: Outcome of incident-                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            |
| 93 .   | 22.05.2018   | Chennai          | Air Miss occurred between Jet Airways fiight JA/462, B738, Chennai to Mumbai and Air Asia flight IAD1729, A320, Jaipur to Bengaluru: Outcome of incident- IAD1729 on route Q21 while descending FL35O to FL26O came in conflict with JA/462 maintaining FL34O. Separation between both aircraft reduced to 4NM lateral and 800 feet vertical from                                                                                                                                                                                                                                                                                                                    |
| 94     | 28.05.2018   | Dhaka (Guwahati) | Airprox between Air Asia flight IAD539, A320, Guwahati to Kolkata & Air India flight AIC731, A320, Kolkata to Guwahati Outcome of incident- IAD539 was maintaining FL240 and AIC731 was given descent to FL2SO. While IAD539 was approximately 70 NM southwest of Guwahati;, RSR controller (Guwahati) observed IAD539 climbing above FL24O without coordination with Guwahati due to which breach of separation (7 NM) occurred. IAD539 reported that Dhaka control had given climb above FL24O.                                                                                                                                                                    |
| 95.    | 31.05.2018   | Mumbai           | Airprox between India Express flight AXB435, B738, Cochin to Dubai & Emirates flight UAE654, BZ7W, Dubai to Colombo Outcome of incident- UAE654 was an eastbound flight via route M3OO at FL370 which had deviated left of track upto SONM: AXB435 was a westbound flight via route M3OO at FL38O. AXB435 also deviated right of track by approximately 2ONM and descended to FL377 as weather deviation procedure_ Both aircraft reported TCAS RA whiie crossing each other at about SONM west of 'IGAMA'. Air                                                                                                                                                      |
| 96_    | 15.06.2018   | Chennai          | Air Miss occurred between Indigo flight IGO511,4320, Shamshabad to Bengaluru and Aif Asia flight IAD1563,A320, Bhubneshwar to Bengaluru: Outcome of incident- IGO511 maintaining FL29O and IAD1563 holding over the fix 'TELUV' at FL290 and came in conflict: Closest distance between IGO511 and IAD1563 was: Horizontal-8.7 NM and Vertical-700 feet.                                                                                                                                                                                                                                                                                                             |
| 97 .   | 06.07.2018   | Kolkata          | Airprox between Air India flight AIC788, A319, Port Blair to Kolkata & Qatari flight QTR932, BZ7W, Hamad to Manila Outcome of incident- Breach of separation occurred near RUMUN (Over of Bengal) between AIC788 and QTR932 in the oceanic airspace where procedural control was in progress under limited VHF coverage_ AIC788, A319, Port Blair to Kolkata, FL340 EST DOPID 0450 UTC and QTR932 , B77W, Hamad to Manila, FL35O, BUBKO 0433 UTC. Both aircraft deviated due to weather: At 0434 UTC, radar track of AIC788 appeared in SDD at FL35O and on converging heading with QTR932. AIC788 had inadvertently selected FL3SO resulting in climb to FL35O. Bay |

|       |            |         | Airprox between Air India flight AIC042 , A320, Delhi to Chennai & Indigo flight IGO2988, A320, Bengaluru to Delhi                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  |
|-------|------------|---------|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| 98_   | 09.07.2018 | Mumbai  | Outcome of incident- IGO2988 was a northbound flight via route Q23 at FL36O. AIC042 was a southbound flight via route Q24 at FL37O. Both aircraft were deviating due weather and were reciprocal to each other. At around 35NM south of Bhopal, AIC042 reported experiencing turbulence and requested for descend to FL36O. The controller instructed AIC042 to standby due reciprocal conflicting traffic at FL36O. However, AIC042 started descending in the next instance rapidly up to FL36O. By that time both flights had crossed each other. The descend of AICO42 immediately after crossing with IGO2988 led to breach in separation between the aircraft: |
| 99.   | 09.07.2018 | Kolkata | Miss occurred between Indigo flight IGO492,A320, Bhubaneshwar to Bengaluru and Indigo flight IGO141,A320, Chennai to Bhubaneshwar: Outcome of incident- IGO492 after departure was cleared to F240, but IGO492 deviated from its cleared path due to weather and became conflicting traffic with the arriving IGO141 . Air                                                                                                                                                                                                                                                                                                                                          |
| 100.  | 10.07.2018 | HAL     | Airprox between Indigo flight IGO779, A320 Coimbtore to Shamshabad & Indigo flight IGO6505, A320, Bengaluru to cochin Outcome of incident- An incident of airprox between IGO779 and IG06505 was reported while both the aircraft were under jurisdiction of HAL ATC.                                                                                                                                                                                                                                                                                                                                                                                               |
| 101 . | 12.07.2018 | Mumbai  | Air Miss occurred between Indigo flight IGO732,4320, Shamshabad to Lucknow and Air Arabia flight ABY521,A320,Sharjaha to Chittagong Outcome of incident- Both aircraft were in conflict at FL35O. The separation between the aircraft reduced to 6.SNM when vertical separation did not exist.                                                                                                                                                                                                                                                                                                                                                                      |
| 102.  | 05.08.2018 | Mumbai  | Air Miss occurred between Oman flight OMA203 , Muscut to Mumbai and German Cargo flight BOX531,B77L, Bengaluru to Leipzig/Halle Airport: Outcome of incident- BOX531 was maintaining FL3OO and OMA203 was maintaining FL35O. The RSR controller instructed OMA2O3 to descent from FL35O to FL25O. The flight of both aircraft were in conflict. path                                                                                                                                                                                                                                                                                                                |
| 103.  | 09.08.2018 | Mumbai  | Air Miss occurred between Indigo flight IG05994,A320, Hubli to Ahmedabad and Indian Air Force flight IAF107 , SU30 , Pune to Goa and back Pune_ Outcome of incident- FL2OO and they came in conflict:                                                                                                                                                                                                                                                                                                                                                                                                                                                               |
| 104.  | 16.08.2018 | Chennai | Air Miss occurred between flight AIQ137,A320, Bangkok to Bengaluru and flight AXM69, A320, Singapore to Shamshabad. Outcome of incident- AIQ137 and AXM69 both maintaining F340 and converging over 'BBZ' VOR (almost at the same time , MINSEP 4 NM) came in conflict with each other.                                                                                                                                                                                                                                                                                                                                                                             |
| 105.  | 28.08.2018 | Chennai | Air Miss occurred between Emirate flight UAE353,B777 , Singapore to Dubai and Go Air flight GOW830, A320, Bengaluru to Kolkata. Outcome of incident- GOW830 came UAE353, maintaining FL36O on route N571, when GOW830 was given climb from FL35O to FL37O                                                                                                                                                                                                                                                                                                                                                                                                           |
| 106.  | 29.08.2018 | Chennai | Air Miss occurred between Air Asia flight IAD2389,A320, Bengaluru to Chennai and Indigo flight IGO137,A320, Goa to Chennai: Outcome of incident- IGO137 came in conflict with IAD2389, on route W116 (approx: 9.6 NM behind), while descending to FL 160 through the level of IAD2389                                                                                                                                                                                                                                                                                                                                                                               |

|   107 . | 11.10.2018   | Chennai   | Air Miss occurred between Spice Jet flight SEJ925,B737, Ahmedabad to Chennai and Indigo flight IG0518,A320, Lucknow to Chennai: Outcome of incident- IGO518 and SEJ925 both aircraft following the same arrival came in conflict with each                                                                                                                                                                                                                                                                                                                                                            |
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|     108 | 15.10.2018   | Kolkata   | Air Miss occurred between Indigo flight IGO797,A320, Kolkata to Bagdogra and Air Asia flight IAD583,A320, Bagdogra to Kolkata: Outcome of incident- IAD583 was operating on ATS route W69 while Indigo Flight IGO797 was climbing to FL3OO on a direct track to ONOTO (reporting point on ATS route W69). IAD583 requested descent near ONOTO. The controller asked IGO797 to stop climb at FL29O and cleared IAD583 also to descent to FL29O.                                                                                                                                                        |
|     109 | 16.10.2018   | Kolkata   | Air Miss occurred between Saudia flight SVA862,B77W, Riyad to Manila and flight UPS15,B744, Suvarnabhumi to Mumbai. Outcome of incident- UPS15 was given climb from FL32O to FL340 when SVA862 was maintaining FL330. Minimum separation was 3 NM and vertical separation was 300 feet                                                                                                                                                                                                                                                                                                                |
|     110 |              | Mumbai    | Airprox between True Jet flight TRJ304, AT72, & VTPSB, C25A, Nanded to Mumbai Outcome of incident- Arriving TRJ304 was instructed  to descend to FLO7O while departing  VTPSB was instructed to climb to FL16O with a restriction to cross 17 NM at or below 5000 feet. However VTPSB did not follow the ATC instructions and reported at 10000 feet at 17 NM NND. Incident attributable to flight crew of VTPSB from                                                                                                                                                                                 |
|     111 | 07.11.2018   | Mumbai    | Air Miss occurred between Air India flightAIC634,A319, Bhopal to Mumbai and Jet Air ways flight JAI7O, B739, Mumbai to Suvarnabhumi: Outcome of incident- Jet Airways flight JAI70 climbing to FL35O via route Q19 and conflicting with Air India flight AlC634 maintaining FL340.                                                                                                                                                                                                                                                                                                                    |
|     112 | 14.11.2018   | Kolkata   | Air Miss occurred between Air India flightAIC308,B788, Delhi to Melbourne and Spice Jet SEJ954, B738, Ahmedabad to Patna: Outcome of incident- over BBN at the same level. The conflict remained undetected till STCA warning                                                                                                                                                                                                                                                                                                                                                                         |
|     113 | 22.12.2018   | Mumbai    | Air Miss occurred between Air India flightAIC636, A319, Delhi to Indore and Indigo flight IGO5409,A320 , Indore to Delhi. Outcome of incident- Arriving AIC636 was instructed to descend and maintain 5000 feet for ILS (Z) Approach Runway 25 via 14 DME arc. Departing IG05409 was cleared via R360 IID and instructed passing FLOGO on DME arc procedure. IG05409 was given further climb to FL280 and AIC636 was given further descend as per ILS procedure, without ascertaining the position of AlC636. The instructions were erroneous which led to breach in separation between the aircraft. |
|     114 | 08.01.2019   | Mumbai    | Loss of Separation between Air India Express flight AXBO21, Vijayawada to Mumbai and Saudia flight SVA834, B787, Jedah to Kwalalampur Outcome of incident- SVA834 at FL3SO was routing via L5O5. AXBO21 at FL36O was routing direct to OPAKA on route W18. AXBO21 was instructed to descend from FL36O to FL3OO and advised to expedite passing FL33O. The controller missed the conflicting traffic SVA834 and the standard separation was reduced between the aircraft.                                                                                                                             |

| 115.   | 25.01.2019   | Yelahanka (Bangaluru)   | Loss of separation between Jet Airways JAI742, ATR72,Manglore to Bengaluru and Unknown Traffic Outcome of incident- JAI742 maintaining FL150 at approximately 7ONM west of BIA, reported sighting another traffic 2'0 clock 6NM at same level_ VOR185D was active upto FL140 at that time. LBL sector was exercising control over the airspace at and above FL1SO. The sector controller did not have any other traffic that was operating in the vicinity at FLISO. However, the controller gave appropriate instructions to JAI742 for avoiding action keeping in mind the location of the traffic as reported by JAI742. Automation System                   |
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| 116.   | 31.01.2019   | Chennai                 | Outcome of incident- Arriving aircraft IGO5991 descending to 4500 feet and cleared for the VOR DME approach RWY 26 appeared to have proceeded outbound from HBL VOR as part of the offset entry procedure. Both the aircraft reported having received TCAS RA when IGO5991 (around 4900 feet) was apparently its inbound leg in the offset entry procedure ad the departing aircraft LLR51O (around 3800 feet) was climbing on runway heading to 6000 feet: Subsequently LLR51O climbed through the level of IG05991 and there was no procedural separation between these _two aircraft on                                                                      |
| 117.   | 04.02.2019   | Kolkata                 | Loss of separation between Jet Airways flight JAI6O6, B737 , Guwahati to Delhi and Go Air flight GOW145, A320, Delhi to Ranchi Outcome of incident- the aircraft: The vertical separation was reduced to 700 feet when both aircraft were laterally 1.574 NM apart_                                                                                                                                                                                                                                                                                                                                                                                             |
| 118.   | 12.02.2019   | Mumbai                  | ETDZ4D , BZ7W, Abu Dhabi to Sydney Outcome of incident- Both flights were on converging track over waypoint 'KADOL' at the same level FL31O. The involved OCC (South Sub-sector) controller missed to notice the position reported by the aircraft on CPDLC on two occasions The separation between QTR9O6 and ETDZ4D at the same level reduced to approximately 12 NM instead of standard 15 minutes                                                                                                                                                                                                                                                           |
| 119.   | 23.02.2019   | Muscat (Mumbai)         | Loss of separation between Qatari QTR942, A350, Hamad to Singapore and Air India Express AXB536, B738 Sharjah to Trivandrum Outcome of incident- QTR942 FL31O EST PARAR -1914 UTC came in contact with CPDLC and checked PARAR at 1907 UTC FL39O instead of FL31O; Traffic AXB536, B738 checked PARAR 1903 UTC at FL39O. Faster aircraft was released behind by Muscat Control only at 6 min separation.                                                                                                                                                                                                                                                        |
| 120.   | 27.02.2019   | Mogadishu (Mumbai)      | Loss of separation between Oman Air OMA225, B738, Muscut to Cochin and Etihad ETH686, B763, Addis Ababa to Delhi Outcome of incident- For ETH686, SANA control had coordinated FL33O, but ETH686 was maintaining FL35O. Level change was not coordinated by SANA control_ ETH686 had mentioned in his position report that she is maintaining FL350 and the same was updated in the automation system. However the concerned controller could not detect the level change and therefore the conflicting traffic. OMA225 via M3OO and ETH686 via P571 crossed their flight-path at LEMAX at same level with one minute separation instead of standard 15 minutes |
| 121_   | 27.02.2019   | Kolkata                 | Loss of separation between Vistara VTI725, A320, Bagdogra to Guwahati and Go Air GOW151 A320, Delhi to Guwahati Outcome of incident- VTI725 was given climb to FL27O. GOW151 was given descend to FL280. Breach of separation between VTI725 and GOW151 as GOW151 descended below FL28O on its own_                                                                                                                                                                                                                                                                                                                                                             |

| 122_   | 15.03.2019   | Mumbai                   | Loss of separation between Etihad ETD29O, A320, Abu Dhabi to Kathmandu and Air France AFR253_ B77W , Tan Son Nhat International Airport to Paris Outcome of incident- The controller had lost the situational awareness on the crossing traffic while issuing climb                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           |
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| 123.   | 28.03.2019   | Yangon (Kolkata)         | Loss of separation between Go Air GOW102 , A320, Port Blair to Kolkata & flight IRMO56, A340, Bangkok to Tehran Outcome of incident- IRMO56 EST received   from   Yangon RINDA-0625 FL32O via route L301_ At06382 GOW102 and IRMO56 both reported RA at FL36O near point LEBIS. No level change received in respect of IRMO56 from Yangon. There was no surveillance coverage and communication with IRMO56.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  |
| 124.   | 19.04.2019   | Chennai                  | Loss of separation between Indigo IGO6215, A320, Chennai to Shamshabad and Indigo IGO192, A320, Kolkata to Chennai Outcome of incident- IGO6215 mistook the instructions meant for SEJ3265 and commenced climb to FL14O_ This resulted in breach of separation between IG06215 and IGO192. Closest distance between the aircraft was 2.6 NM and 600 Feet:                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                     |
| 125.   | 29.05.2019   | Northern Control (Delhi) | Loss of separation between Air Asia IAD713, A320, Sri Nagar to Delhi and Indigo IG0955, A320, Delhi to Jammu and Loss of separation between IAD713, A320 , Sri Nagar to Delhi and Go Air GOW185, A320, Delhi to Jammu Outcome of incident- IAD713 was in-bound to Delhi via W31E at FL33O. Opposite direction traffic IGO955 was operating from Delhi to Jammu on route W31W at FL32O. When IAD713 was approximately 40 NM north of ASARI; it received an RA due to abrupt change in level of IGO955 from FL32O to FL323. The standard vertical separation between IAD713 and IGO955 got infringed due to the unauthorized climb by IGO955. IAD713 responded to RA and executed a climb maneuver. There was another aircraft in close vicinity of IAD713, in the opposite direction, GOW185 at FL340 from Delhi to Jammu via route W31W. The RA climb of IAD713 also resulted in a loss of standard separation with respect to opposite direction traffic GOW185. The incident occurred under the jurisdiction of Northern Control (Defense). |
| 126.   | 08.06.2019   | Mumbai                   | Loss of separation between Indigo IGO245, A320, Indore to Goa and Emirates UAE433, B7ZW, Singapore to Dubai Outcome of incident- IGO245 and UAE433 both operating at FL36O on crossing tracks (W1OS-BBB-W15 & AGELA-N571-PARAR respectively) came in conflict in surveillance environment resulting in loss of separation. The Lateral separation reduced to 3.7 NMat the same level                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          |
| 127 .  |              | Chennai                  | Loss of separation between Indigo IG06309, A320, Goa to Shamshbad and Air Asia IAD1519, A320, Shamshbad to Bengaluru Outcome of incident- Arrival IG06309 VOGO-VOHS descending to FL11O and departure IAD1519 VOHS- VOBL climbing to FL12O, separation reduced to less than standard separation. The separation reduced to 2.9 NM while the required standard separation was 3.0 NM:                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          |
| 128.   | 17.07.2019   | Kolkata                  | Loss of separation between Crony CKS247 , B744, Delhi to Hong Kong and Air India AIC2691, A320, Delhi to Guwahati and LoS between Crony CKS247, B744, Delhi to Kong and Thai THA31S, BZZW, Bangkok to Delhi Outcome of incident- CKS247 started climb FL33O to FL370 without authorization. Breach of separation occurred between CKS247 and AIC2691 and also between CKS247 and THA315. Hong from                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            |

| 129.   | 26.07.2019   | Dhaka (Kolkata)          | CCA941 _ A333 , Loss of separation between flight of separation between Etihad ETD811, B789, B77L, Dubai to Hong Kong and Loss to Abu Dhabi and BOX514, B77L, Dubai to Hong Kong Chengdu Outcome of incident- ATC to be climbing under Dhaka; This triggered conflict CCA941 was observed by Kolkata induced conflict climb of ETD81 (Etihad 811) climb of BOX514 (from FL370 which in turn on 132.5 with UKW (west radar), from FL38O. Later the Air China flight CCA941 reported; all three aircraft were under VHF control of Dhaka.                                                                                                                                                                                                                                                                                                                                                                                                                                                                      |
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| 130.   | 26.07.2019   | Ambala (Delhi) (Defense) | Air India AIC174, B777 , San Francisco to Delhi & Unknown Loss of separation between IAF Aircraft Outcome of incident- Area VIR154/ VIR145, which is Local flying was in progress in Air-force Local Flying to FL270 via route A486 adjacent to Delhi_TMA was part of the air within the Delhi TMA An unknown traffic squawking 4400 Delhi TMA at FL264 and exerciseenside the LFA, unexpectedly, turned right and entered automation exene fe conflict with AC174. Conflici warning was generated by the and the RSR controller took immediate avoidance action;c the intruder aircraft and the Prior coordination was not effected by airforce ATCregarding traffic information intruder aircraft never contacted Delhi ACC: The RSR controller gave turned the intruder traffic. The intruder aircraft continued its climb, area, and joined the participating formation again; back towards the infringed and the lateral separation was reduced Meanwhile the standard separation got to 7.1 NM: system |
| 131_   | 02.08.2019   | Mumbai                   | Spice Jet SEJ734, 8738, Shirdi to Chennai ad Spice Jet Loss of separation between SEJ2767, DHBD, Shamshabad to Surat Outcome of incident- minutes in its estimates (came early) which was not There was revision of approx: 20 Mumbai due to which position of the synthetic tack coordinated by Shamsabad ATC with seconds of SEJ2767 appearing on SDD, PCA displayed on SDD was not correct Within CCA; RA and breach in standard separation occurred w: wa9 ceduced to 800 feet when both the aircraft were 0 NM apart separation                                                                                                                                                                                                                                                                                                                                                                                                                                                                         |
| 132.   | 10.08.2019   | Kolkata                  | between Spice Jet SEJ341 , B738, Jaipur to Guwahati and Indigo Loss of separation IGO457, A320, Guwahati to Agartala Outcome of incident- to touchdown Runway 02 due non-receipt of landing SEJ341 initiated go around at 1NM Runway 02 also taking off leading clearance from tower while IGO457 was departing from to breach in separation between the aircraft:                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           |
| 133.   | 04.09.2019   | Mumbai                   | Loss of separation between Spice Outcome of incident- SEJ8191 climbing to FL37O on ATS route Breach of separation incident occurred between the aircrafts were deviated right Q1 & QTR891 maintaining f360 on ATS route I301.Both lateral separation The of track: 5 nm when breach of separation occurred: was approximately                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                |
|        | 05.09.2019   | Mumbai                   | between Air India AIC5294, B77W, Medina to Nagpur and Emirates Loss of separation UAE313, B7ZW, Haneda to Dubai Outcome of incident- climb from FL36O to FL380. A/C5294 was maintaining FL37O while UAE313 Was given Minimum separation: vertical:-400 feet horizontal: 5 nm                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 |

|      |            |               | Loss of separation between Indigo IGO6054, A320, Bagdogra to Ahmedabad and Go Air GOW153, A320, Delhi to Bagdogra                                                                                                                                                                                                                                                                                                                                 |
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| 136. | 27.09.2019 | Mumbai        | Loss of separation between Air India AIC978, A320, Muscat to Shamshabad and Spice Jet SEJ052, B738, Dubai to Pune Outcome of incident- Due to heavy weather aic978 deviated right from route I301 and lost separation with sej052 b738 Dubai to Pune on route n571 both at FL35O. Later SEJO52 was descended to f330 through There was no direct communication with both aircraft and had to do transmission through other aircraft. relay: relay |
| 137. | 12.10.2019 | IAF (Silchar) | Loss of separation between Spice Jet SEJ3214, DHC8, Silchar to Kolkata and Indigo IG0164, A320, Kolkata to Silchar Outcome of incident- Indigo Flight IGO164, A320, Kolkata To Silchar was given descend to FL 210 and maintaining FL 210. Spicejet Flight SEJ3214, Q400, Silchar to Kolkata was given climb to FL 200. IGO 164 descended below FL 210 in coordination with Silchar though Guwahati has not released IGO164 to Silchar:           |
| 138. | 15.10.2019 | Mumbai        | Loss of separation between Fly Dubai FDB445, B737 , Dubai to Mumbai and Qatari QTR557 , B77W, Mumbai to Hamad Outcome of incident- FDB445, initiated missed approach procedure RWY27 due delayed roll by departure QTR557 leading to breach in separation between the aircraft:                                                                                                                                                                   |
| 139. | 18.10.2019 | Chennai       | Loss of separation between Indigo IG06616, A320, Port Blair to Kolkata and Go Air GOW101 , A320, Kolkata to Port Blair Outcome of incident- GOW1O1 WAS MAINTAINING FL33O. IG06616 WAS INITIALLY GIVEN CLIMB TO FL32O. BREACH IN SEPARATION:                                                                                                                                                                                                       |
| 140. | 20.10.2019 | Mumbai        | Loss of separation between Arebia ABY522, A320, Chittagong to Sharjahan and Vistara VTI856, A320 , Goa to Delhi Outcome of incident- ABY522 WAS GIVEN CLIMB from FL36O TO FL380. TRAFFIC VTI856 A320 VOGO-VIDP WAS MAINTAINING FL37O.                                                                                                                                                                                                             |
|      | 01.11.2019 | Mumbai        | Loss of separation between Emirates UAE399, B777 , Ngurah to Dubai and Oman Air OMA371, B738, Muscut to Columbo Outcome of incident- UAE399 MAINTAINING FL360 ON APPROVED DEVIATION SONM LEFT OF TRACK ON ROUTE N571 REPORTED GETTING TCAS RA WITH RESPECT TO OMA371 ON ROUTE N571 WHICH HAD DEVIATED 4ONM RIGHT OF TRACK AND WAS MAINTING FL353.                                                                                                 |

## FQLLOWING SAFETY MEASURES ARE TAKEN BY DGCA:

- ATCO's and Pilot proficiency checks are being carried out regularly.
- ATC services are being modernized to include conflict warning in the system to assist ATCO's.
- Coordination procedures of handing over from one unit to another have been laid out. Coordination of handing over traffic to adjoining FIR has been worked out & any deviation is being pointed out to the concerned units for taking corrective action.
- Whenever required, corrective training is being given to Pilots and Air Traffic Controller; and training procedures amended.
- Controllers are given training on ATC simulator at major stations and sensitized on the subject.
- Implementation of Safety Management System at airports to mitigate the risk of accidentl incident.
- Implementation of flexible use of airspace which will reduce traffic congestion in the airspace
- Airlines have been directed to avoid use of similar confusing call signs.
- One separate Directorate of Air Space and Air traffic Management in DGCA has been created in DGCA for better surveillance and regulatory functions in Air traffic Management (ATM):
- Case studies of Airprox IATC incidents are discussed and analysed to avoid recurrence of such incidents.
- AAI had issued an Air traffic management circular on confusing call-signs, which is now incorporated in the ATS Manual Part-1.