Lok Sabha Question No. 1906 (UNSTARRED), answered on 2020-09-22
Subject: Delay in Arrival and Departure of Aircrafts
Ministry: CIVIL AVIATION
Asked by: Rajiv Pratap Rudy

## GOVERNMENT OF INDIA

UNSTARRED QUESTION NO. : 1906

## MINISTRY OF CIVIL AVIATION LOK SABHA

(To be answered on the September 2020) 22nd

## DELAY IN ARRIVAL AND DEPARTURE OF AIRCRAFTS

1906.

SHRI RAJIV PRATAP RUDY

## Will the Minister of CIVIL AVIATION

be pleased to state:-

- (a) whether there is continuous delay in arrival and departure of aircrafts, especially those operating via metro cities;
- (c) the details and the number of occasions when revised Calculated Take-off Time (CTOT) has been issued to departing aircrafts with the average time and reasons therefor; and along
- (b) if so, the reasons therefor and the steps taken by the Government to improve on-time performance of airlines;
- (d) the details and the number of in a month, month-wise, during the last year when the revised CTOT has been issued for each Of the airports under AERA? days

## ANSWER

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

(Shri Hardeep Singh Puri)

(a) & (b): Sir. Occasional delays in arrival and departure of aircrafts are seen at Delhi, Mumbai and Bengaluru Airports at certain times of the day: At these airports slot management is done by airport operator to avoid these occasional delays Further; to avoid congestion at airports initiatives like Airport Collaborative Decision Making and Air Traffic Flow Management has also been implemented: No,

(c): Details and the number of occasions when revised Calculated Take-off Time (CTOT) has been issued to departing aircrafts is enclosed at Annexure [ (d) Details and the number of days in a month; month-wise, during the last year when the revised CTOT has been issued for each of the airports under AERA is enclosed at Annexure II:

## on 22.09.2020

| Average_Delaylin minutes) 2019   | Average_Delaylin minutes) 2019   | Average_Delaylin minutes) 2019   | Average_Delaylin minutes) 2019   | Average_Delaylin minutes) 2019   | Average_Delaylin minutes) 2019                                                                 | Average_Delaylin minutes) 2019   |
|----------------------------------|----------------------------------|----------------------------------|----------------------------------|----------------------------------|------------------------------------------------------------------------------------------------|----------------------------------|
|                                  | Mumbai                           | Delhi                            | Bengaluru                        | Kolkata                          | Chennai Reasons                                                                                |                                  |
| 18                               | 9                                | 33                               |                                  |                                  |                                                                                                | Jan                              |
| 26                               | 21                               | 30                               |                                  |                                  | Frequently quoted reasons for a revised CTOT( Calculated Take Off Time) are as follows:        | Feb                              |
| 25                               | 38                               | 30                               |                                  |                                  | 1. Flight delayed from the previous station revises                                            | Mar                              |
|                                  | 0                                | 30                               |                                  |                                  | its EOBT Expected Off Block Time) after the ATFM Air Traffic Flow Management) measures         | Apr                              |
| 0                                | 0                                | 30                               | 24                               |                                  | are applied.                                                                                   | May                              |
| 37                               | 0                                | 30                               |                                  |                                  | 2. Closure or Work in Progress at the place of Departure. Flight requests a revised CTOT       | Jun                              |
| 47                               | 0                                | 30                               |                                  |                                  | 3. Flight missed its original CTOT due to traffic at                                           | Jul                              |
| 50                               | 24                               | 30                               | 14                               |                                  | holding point, had to be issued a revised CTOT.                                                | Aug                              |
| 47                               | 0                                | 30                               |                                  |                                  | 4. Watch hour restrictions, flight requests an earlier CTOT                                    | Sep                              |
| 19                               |                                  | 30                               |                                  | 40                               | 5_ Weather Disruption has cumulative effect on                                                 | Oct                              |
| 35                               | 35                               | 30                               |                                  |                                  | the network Operations delaying most flights. 6. Flight Duty time limitation requirements from | Nov                              |
| 45                               | 16                               | 30                               |                                  |                                  | Airline requesting an earlier CTOT                                                             | Dec                              |

| Number of occasions(flights) Revised CTOT issued 2019   | Number of occasions(flights) Revised CTOT issued 2019   | Number of occasions(flights) Revised CTOT issued 2019   | Number of occasions(flights) Revised CTOT issued 2019   | Number of occasions(flights) Revised CTOT issued 2019   | Number of occasions(flights) Revised CTOT issued 2019   |
|---------------------------------------------------------|---------------------------------------------------------|---------------------------------------------------------|---------------------------------------------------------|---------------------------------------------------------|---------------------------------------------------------|
|                                                         | Mumbai                                                  | Delhi                                                   | Bengaluru                                               | Kolkata                                                 | Chennai                                                 |
| 16                                                      |                                                         | 26                                                      |                                                         |                                                         |                                                         |
| 16                                                      | 8                                                       |                                                         | 16                                                      |                                                         |                                                         |
| 19                                                      | 6                                                       |                                                         |                                                         |                                                         |                                                         |
|                                                         |                                                         |                                                         | 6                                                       |                                                         |                                                         |
|                                                         |                                                         |                                                         |                                                         | 2                                                       | 0                                                       |
| 6                                                       |                                                         |                                                         | 3                                                       | 0                                                       |                                                         |
| 36                                                      |                                                         |                                                         | 0                                                       | 0                                                       |                                                         |
| 18                                                      | 10                                                      |                                                         | 3                                                       | 5                                                       | 0                                                       |
| 9                                                       | 0                                                       |                                                         | 1                                                       |                                                         | 0                                                       |
| 25                                                      | 0                                                       | 1                                                       |                                                         |                                                         | 2                                                       |
| 107                                                     | 7                                                       |                                                         |                                                         |                                                         | 0                                                       |
| 24                                                      | 11                                                      |                                                         |                                                         |                                                         |                                                         |

## Annexure referred to in the reply to part (d) of LS USQ No. 1906 due for reply on 22.09.2020

## No. of Days in a month when revised CTOT is issued-2019

|     |   Mumbai | Delhi   | Bengaluru   | Kolkata   | Chennai   |
|-----|----------|---------|-------------|-----------|-----------|
| Jan |        4 | 6       | 2           |           | 0         |
| Feb |        8 | 2       | 4           |           |           |
| Mar |        7 |         | 0           |           |           |
| Apr |        0 |         | 3           |           |           |
| May |        0 |         |             |           |           |
| Jun |        4 |         |             |           |           |
| Jul |        6 |         |             | 0         | 0         |
| Aug |        4 |         | 2           | 2         | 0         |
| Sep |        4 | 0       |             | 0         | 0         |
| Oct |        6 | 0       |             |           | 2         |
| Nov |       16 |         | 0           |           | 0         |
| Dec |        4 | 5       |             |           | 0         |