 The aircraft was flown by Captain Cairnes at an altitude of due to low cloud and other air traffic in the Manchester area.After receiving clearance from air traffic control at Manchester Ringway Airport, Captain Cairnes flew Charlie Sierra inland to Wigan Beacon, a non-directional beacon in the Manchester Zone, which transmitted a recognition signal of "MYK" in Morse code on a frequency of 316 kHz and a range of c. .Due to a number of navigation errors in respect to the radio compass bearings and altitude readings, the Silver City Bristol Freighter crashed near the summit of Winter Hill, five miles (8 km) southeast of Chorley, Lancashire at 9