The Winter Hill air disaster occurred on 27 February 1958, when the Silver City Airways Bristol 170 Freighter G-AICS, operated by Manx Airlines on a charter flight from the Isle of Man to Manchester, England, crashed during heavy snow into Winter Hill (also known as Rivington Moor), 5 miles (8.0 km) southeast of Chorley.

The flight was a charter flight from Ronaldsway Airport, Ballasalla, on the Isle of Man, to Manchester Ringway Airport, operated by Manx Airlines with the Silver City Airways Bristol 170 Freighter G-AICS, call sign "Charlie Sierra".

[2][6] After receiving clearance from air traffic control at Manchester Ringway, the flight continued 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. 25 miles (40 km).

[7][8][9] As of February 2010[update], it was the worst high-ground air crash in the United Kingdom and the 11th-worst for number killed since 1950.

[1][2][10] The inquiry also ascribed some blame to the air traffic controllers and to the design of the aircraft's cockpit, in which navigation displays were above and slightly behind the pilots' seats and therefore difficult to see.