Registered B-22717 with serial number 435, it was manufactured on 16 November the previous year and had since accumulated 265 hours and 47 minutes of flight time.

[1]: 3  It was equipped with two Pratt & Whitney PW124B turboprops, both had flown for nearly 275 hours.

[1]: 3 The aircraft, an ATR 72-200, had just dropped off passengers in Penghu for the Lunar New Year and was being ferried back to Taipei.

During approach the aircraft deviated from its assigned course and crashed into a hill, killing all four crew members on board.

[6][7][8] The investigation revealed that the flight crew failed to maintain situational awareness and did not cross check their navigation aids.