Pakistan Civil Aviation Authority (CAA) has stated that it’s “doing its easiest to lend a hand” Pakistan Global Airline (PIA) in comparing the present situation of its ATR plane fleet, and the general choice lies with PIA and the original producers (OEM) of the plane to decide whether or not its engines are cleared for operation or now not.
CAA Deputy Director Basic Nadeem Sharif Pasha said within the letter, despatched to PIA and dated December 13, that although the shakedown inspections of all ATR plane are underway, the “inspections of inside prerequisites of ATR engines is past our (CAA) scope”.
He said that “vital observations” have been made when the technical data of all plane have been reviewed.
“The effects of audits carried out by way of airworthiness box workplaces are indicating shortcomings in upkeep, high quality assurance and Airworthiness Control Device of PIAC,” the letter added.
The CAA letter added that engine development research and well being tracking of engines is the duty of PIA, and the CAA has accrued the statistical knowledge of overall engines failed because the induction of the ATR plane.
“The research of knowledge is reflecting an alarming development of engine screw ups because of HPT blades, primary bearings, surging and oil device problems,” stated the CAA letter despatched to PIA.
The letter additional said that the plane have been inducted in 2007, and the predicted lifestyles of the engine’s HPT blades used to be 16,000 cycles via the OEM, calculated as one cycle being equivalent to at least one flight hour (01 FHrs) if taken as a mean price of utilisation.
The airline skilled six inflight shutdowns throughout a span of 4 years, and then on suggestions from the OEM, the airline decreased the lifestyles of scorching segment parts to five,000 FHrs.
“Even after the adoption of program for alternative of HPT blades at five,000 hrs, the crucial factor of inflight shutdowns may just now not be managed,” stated the letter.
“As according to knowledge of untimely untimely failure of PW 127 engines, PIAC has 20 incidents of inflight shutdowns because of HPT blades screw ups.”