SA341G Westland Gazelle G-BBSI as seen at Battersea Heliport in April 1977 (Photo: Brian Bickers)
This aircraft, at the time of the photo, was owned by McAlpines and, prior to that, Westland Helicopters.
Sadly, this craft was written off just days after this photo was taken:
SEVEN OR EIGHT MINUTES INTO THE FLIGHT THE ENGINE OIL CENTRAL WARNING LIGHT ILLUMINATED AND THE OIL GAUGE SHOWED ZERO PRESSURE. AN AREA WAS SELECTED FOR A FORCED LANDING AND THE ENGINE SET TO MINIMUM. AT 200-300FT AGL THE AIRCRAFT YAWED RIGHT, THE PILOT ASSUMED THAT THIS SIGNIFIED AN ENGINE FAILURE AND WENT FOR AN AUTOROTATIVE LANDING. THERE WAS INSUFFICIENT HEIGHT FOR THIS TO BE ACHIEVED SUCCESSFULLY AND A HARD LANDING RESULTED. INVESTIGATION SHOWED THAT INGESTION OF METAL DEBRIS INTO ONE OF THE ENGINE OIL SCAVENGE PUMPS HAD CAUSED THE COMMON DRIVE SHAFT TO SHEAR RESULTING IN ENGINE FAILURE. THE DEBRIS HAD COME FROM A FAILED COMPRESSOR BEARING HOUSING. A MODIFIED HOUSING AND A SCAVENGE PUMP SCREEN IS TO BE INTRODUCED AT MAJOR OVERHAULS FOLLOWING THIS OCCURRENCE. (AIB BULLETIN 8/77).