During its take-off Self_motion run Motion , Piper PA-23 Aztec G-AYDE of McAlpine Aviation entered Arriving the active runway without permission Having_or_lacking_access .

Piper Alpha was an oil production platform in the North Sea approximately north-east of Aberdeen , Scotland , that was operated Being_in_operation by Occidental Petroleum ( Caledonia ) Limited .

An explosion and resulting oil and gas fires destroyed Destroying Piper Alpha on 6 July 1988 , killing Killing 167 people , including two crewmen of a rescue vessel ; 61 workers escaped Escaping and survived .