Lok Sabha Question No. 1206 (UNSTARRED), answered on 2023-07-27
Subject: Guidelines relating to MRO of Aircraft
Ministry: CIVIL AVIATION
Asked by: Venkatesh Netha Borlakunta, Gaddam Ranjith Reddy

## GOVERNMENT OF INDIA

## MINISTRY OF CIVIL AVIATION

Lok Sabha

UNSTARRED QUESTION NO. : 1206 ( TO BE ANSWERED ON THE  27th July 2023 )

## GUIDELINES RELATING TO MRO OF AIRCRAFT

1206.    SHRI VENKATESH NETHA BORLAKUNTA DR. G. RANJITH REDDY

Will the Minister of CIVIL AVIATION

## ANSWER

## Minister of State in the Ministry of (GEN. (DR) V. K. SINGH (RETD))

CIVIL  AVIATION

- (a)  The  responsibility  for  maintaining  the  aircraft  lies  with  airline which is mandatorily required to ensure that aircraft is maintained as per the maintenance programme prepared based on instructions of  the  manufacturer  and  approved  by  Directorate  General  of  Civil Aviation  (DGCA).  However,  Aircraft  do  experience  technical  snags during  the  course  of  operation.  Technical  snags  may  arise  due  to improper  functioning/  malfunctioning  of  components/accessories fitted  on  the  aircraft.  As  per  the  regulatory  provisions,  any  defect observed/detected  by  the  cockpit  crew/maintenance  personnel  is recorded and rectification action initiated. In case of major defects, operators are also required to provide a report to DGCA.

be pleased to state:-

- (a) whether the Government is aware that some of the airlines are compromising  on  Maintenance,  Repair  and  Overhaul  (MRO)  of aircraft resulting in technical and other glitches in aircraft;
- (b) the guidelines relating to MRO of aircraft;
- (c) whether the guidelines are being strictly followed by all airlines;
- and
- (d) if so, the details thereof and if not, the action taken by the DGCA
- on such airlines?

(b) Civil Aviation Requirement 145 lay down the requirements for the approval of Aircraft Maintenance Organisation which mandates the organisation to have required manpower, equipment and literature commensurate  to  the  type  and  fleet  to  be  maintained,  under  the system.  Airlines are required to ensure  that the aircraft are maintained  in  a  continuous  state  of  airworthiness  and  all  defects are rectified before commencement of flight.

(c)  &  (d)  DGCA  ensures  that  the  airlines  and  the  maintenance organisations continue to comply with the regulatory requirements against which they have been initially approved through a system of surveillance, audits, spot checks, night surveillance etc. In case of non-compliances, DGCA ensures that rectification action is taken by the airlines/ maintenance organisation. DGCA initiates enforcement actions  against  organisations/  personnel  in  case  violations  are found. ;

The  technical  snags  /  occurrences  reported  by  the  flight  crew  on receiving an aural/ visual warning in the cockpit or an indication of an  inoperative/  faulty  system  or  while  experiencing  difficulty  in handling/ operating the aircraft, are recorded by the flight crew in the Flight Report Book of the aircraft. After completion of the flight this is examined  by a duly qualified and type-rated Aircraft Maintenance Engineering (AMM)/ Trouble Shooting Manual. The snag is  thereafter  rectified  as  per  the  procedure  in  the  AMM  and  may involve  replacement  of  components,  testing,  servicing  etc.  Upon satisfactory rectification, the aircraft is released for service and an entry  to  this  effect  is  made  in  the  Flight  Report  Book.  In  case  of repetitive snags/ occurrences reported, then it is the responsibility of Airlines/ operator to approach the OEM/ manufacturer for mitigation of defects.

CAR  Section-5,  series-C,  Part-I  requires  occurrences  relating  to system and component failure e.g. Damage to a principal structural element, Loss of  any  part  of  the  aircraft  structure,  Malfunction  of Air- conditioning system, Electrical system, Fire protection system, Flight control system, Fuel System, Hydraulic System, Landing gear system/ brakes/ tyres,  Navigation system, Propulsion system, etc., to be reported to DGCA. These occurrences, based on their severity are investigated either by the concerned airline under the supervision  of  the  DGCA  or  by  the  DGCA  under  Rule  13  (1)  of  the Aircraft (Investigation of Accidents and Incidents) Rules 2017. The number of surveillance, spot check, night surveillance carried out in last one year from June 2022-June 2023 are as follows: (i) No of surveillance: 1276 (ii) No. of night surveillance: 398 (iii) No. of spot check: 986

- ******