An engine fire which forced a Flybe flight to make an emergency landing at Belfast was caused by an oil supply failure, according to a safety report published this week.
The Bombardier DHC-8-402 plane, with 76 passengers and four crew on board, was on its was from Glasgow to Belfast City Airport.
But it had to be diverted to Belfast International Airport, where passengers were evacuated on landing.
An Air Accidents Investigation Branch (AAIB) report said a cracked washer in engine became loose, causing the oil pump to fail.
Overheating then caused the left engine to catch fire.
The incident happened in December 2014.
At the end of last year, the engine manufacturer issued an alert requesting internal inspection of engines and for the washers to be replaced more regularly.
