Narrative:The DC-3 was on a VFR flight from London-Northolt to Glasgow-Renfrew and departed London at 09:13. An RAF Avro Anson T.21 (VV243) had taken off from Middleton at 08:09 for a training flight.
Both aircraft collided in mid-air at 4500 feet. Both planes disintegrated and fell to the ground.
Probable Cause:
PROBABLE CAUSE: "The accident was the result of a midair collision. Since neither aircraft took any apparent avoiding action it must be concluded that the pilot of the Anson did not see the Dakota and that the pilots of the Dakota did not see the Anson. This must be attributed to failure on the part of the captain of each aircraft to ensure the maintenance of an effective lookout."
Classification:
Mid air collision
Loss of control
Photos

accident date:
19-02-1949type: Douglas Dakota C.3
registration: G-AHCW
Map
This map shows the airport of departure and the intended destination of the flight. The line between the airports does
not display the exact flight path.
Distance from London-Northolt Airport to Glasgow-Renfrew Airport as the crow flies is 542 km (339 miles).
Accident location: Approximate; accuracy within a few kilometers.
This information is not presented as the Flight Safety Foundation or the Aviation Safety Network’s opinion as to the cause of the accident. It is preliminary and is based on the facts as they are known at this time.