At least 18 of brand new Sukhoi 30 MKI's delivered to the Indian Air Force had been fitted with secondhand engines, according to a recent report. It is claimed that Hindustan Aeronautics Limited (HAL) fitted the secondhand engines without the knowledge and approval of the defence ministry. The report stated that AL 31FP engines fitted in certain aircraft was in Cat B condition at the time of delivery to Indian Air Force (IAF).
The IAF's frontline Sukhoi 30 MKI is a multipurpose twin-seater supersonic fighter aircraft which is powered by two AL-31FP aero engines.
211216-N-QI061-1222 NAVAL STATION MAYPORT, Fla. (December 16, 2021) An MQ-4C Triton Unmanned Aircraft System (UAS), assigned to Unmanned Patrol Squadron 19 (VUP-19), sits on the flight line at Naval Station Mayport, Florida, Dec. 16, 2021. VUP-19, the Navy’s first Triton squadron, will continue to maintain and operate the aircraft off the East Coast to further develop the concept of operations and refine tactics, techniques, and procedures. (U.S. Navy photo by Mass Communication Specialist 2nd Class Nathan T. Beard/ Released)