Assertion: helicopter | /r/AtLocation | normal cruising speed
Facets:
value: after leaving raf mount pleasant
type: TEMPORAL
Source sentences:
text: After leaving RAF Mount Pleasant, the helicopter was at a normal cruising speed and an altitude of between 300 and 700 feet when it nosed down and crashed into the ground about 6 kilometres south-east of the airfield; it was destroyed by a subsequent fire.