Last month, on July 29th, a Ukraine International Airlines (UIA) Boeing 767-300 experienced a a “loud bang” coming from the one of its engines as it climbed out of its hub in Kiev. Following the occurrence the engine was shut down and the aircraft returned to Kiev. The UIA Boeing 767-300 had registration UR-GEC and was performing flight PS271 from Kiev, Ukraine to Bangkok, Thailand. According to Aviation Herald, the aircraft had reached an altitude of 4000 feet when a loud bang was heard from the right hand side engine. Following the bang, “N1 indications for the right hand engine dropped to 20%”, and the EGT had increased to twice the maximum limit, the Aviation Herald reports. “On many jet engines, N1 is the primary indication of engine thrust” while EGT (exhaust gas temperature) is “the temperature of the turbine exhaust gases as they leave the turbine unit” says aviation reference site SKYbrary.
Due to these abnormalities, the crew performed its checklists and proceeded to shut the engine down. The plane then made its return to Kiev for “a safe overweight landing” approximately 20 minutes after departure.