It includes maintenance, test, modification, modernisation and structural part & airframe repair and replacement activities for hydraulic, pneumatic, mechanic, electrical and avionic systems of various type aircrafts.

Depot Level Maintenance activities are performed in compliance with national and international aviation standards by using SHY-145 Maintenance Organisation Approval Certificate, NADCAP NDT Certificate, GE/IAI/TAI/THY Companies Quality Conformity Certificates, ABO/JOAP/Turbomeca Nitrogen/Oil Analysis Competence Certificates, AQAP/TS/AS Quality Certificates as well as technical bulletins and work cards published by manufacturers.

All maintenance/repair operations required to be applied to aircrafts within the scope of Depot Level Maintenance in compliance with the planned maintenance documents are approved in detail and work plans are prepared as soft copy.       

Aircrafts for which Depot Level Maintenance and Modification are performed