Narrative:
DC-7 PH-DSN departed New York-Idlewild for Bradley Field where 73 passengers boarded the plane . At 22:26 the aircraft departed for Amsterdam with a planned intermediate stop at Prestwick. At 07:15 GMT, while cruising at FL170 over the Atlantic Ocean, heavy vibration occurred in the no. 1 engine and propeller. The aircraft lost speed and started to descend. The crew prepared for a ditching when suddenly at 07:30 the no. 1 engine broke loose and fell into the sea. The flight continued and landed safely at Prestwick around 08:45.
PROBABLE CAUSE: "Failure of the forward propeller shaft bearing on No.1 engine. Violent vibration, which could not be stopped, arose in No.1 propeller and resulted in fire and separation of the entire No.1 power unit."
Forced landing on runway
| Status: | Accident investigation report completed and information captured |
| Date: | Sunday 11 June 1961 |
| Type: |  Douglas DC-7C |
| Operator: | KLM Royal Dutch Airlines |
| Registration: | PH-DSN |
| MSN: | 45546/1031 |
| First flight: | 1958 |
| Total airframe hrs: | 9318 |
| Engines: | 4 Wright R-3350 (988TC18) |
| Crew: | Fatalities: 0 / Occupants: 8 |
| Passengers: | Fatalities: 0 / Occupants: 73 |
| Total: | Fatalities: 0 / Occupants: 81 |
| Aircraft damage: | Substantial |
| Aircraft fate: | Repaired |
| Location: | over Atlantic Ocean ( Atlantic Ocean)
|
| Phase: | En route (ENR) |
| Nature: | Int'l Non Scheduled Passenger |
| Departure airport: | Windsor Locks-Bradley International Airport, CT (BDL/KBDL), United States of America |
| Glasgow-Prestwick Airport (PIK/EGPK), United Kingdom | |
| Flightnumber: | KL756 |
DC-7 PH-DSN departed New York-Idlewild for Bradley Field where 73 passengers boarded the plane . At 22:26 the aircraft departed for Amsterdam with a planned intermediate stop at Prestwick. At 07:15 GMT, while cruising at FL170 over the Atlantic Ocean, heavy vibration occurred in the no. 1 engine and propeller. The aircraft lost speed and started to descend. The crew prepared for a ditching when suddenly at 07:30 the no. 1 engine broke loose and fell into the sea. The flight continued and landed safely at Prestwick around 08:45.
Probable Cause:
PROBABLE CAUSE: "Failure of the forward propeller shaft bearing on No.1 engine. Violent vibration, which could not be stopped, arose in No.1 propeller and resulted in fire and separation of the entire No.1 power unit."
Classification:
Engine separationForced landing on runway
Sources:
» ICAO Circular 69-AN/61Photos
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 Windsor Locks-Bradley International Airport, CT to Glasgow-Prestwick Airport as the crow flies is 4961 km (3101 miles).
Distance from Windsor Locks-Bradley International Airport, CT to Glasgow-Prestwick Airport as the crow flies is 4961 km (3101 miles).
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.
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