Engine filters of all the ATR planes have been replaced: PIA spokesperson
KARACHI, (Pakistan Point News – 25th Jan, 2017) : Engine filters of all the ATR planes under PIA have been replaced. He said that before this engine filters were replaced after 500 hours
of flight but civil aviation authority ordered them to be changed after every 100 hours of flight or else the flights will be banned. However, all the engine filters have been replaced.