Last updated: 25 July 2021
| Status: | |
| Date: | Saturday 21 October 1972 |
| Time: | ca 21:30 |
| Type: |  NAMC YS-11A-500 |
| Operator: | Olympic Airways |
| Registration: | SX-BBQ |
| MSN: | 2155 |
| First flight: | 1971 |
| Crew: | Fatalities: 1 / Occupants: 4 |
| Passengers: | Fatalities: 36 / Occupants: 49 |
| Total: | Fatalities: 37 / Occupants: 53 |
| Aircraft damage: | Damaged beyond repair |
| Location: | 3 km (1.9 mls) off Athens-Ellinikon International Airport (ATH) ( Greece)
|
| Phase: | Approach (APR) |
| Nature: | Domestic Scheduled Passenger |
| Departure airport: | Kerkyra-I. Kapodistrias Airport (CFU/LGKR), Greece |
| Athens-Ellinikon International Airport (ATH/LGAT), Greece | |
| Flightnumber: | OA506 |
A NAMC YS-11A-500 passenger plane, registered SX-BBQ, was damaged beyond repair in an accident at sea near Athens-Ellinikon International Airport (ATH), Greece. Olympic flight 506 from Corfu carried 49 passengers and four crew members. Thirteen passengers and three crew members survived the accident.
Flight 509 took off from Kerkyra, Corfu at 19:55 for the over water flight to Athens. The airplane crashed in sea while approaching Athens in reduced visibility about 21:30.
Classification:
Controlled Flight Into Terrain (CFIT) - Water
Sources:
» Dete.grPhotos
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 Kerkyra-I. Kapodistrias Airport to Athens-Ellinikon International Airport as the crow flies is 379 km (237 miles).
Accident location: Approximate; accuracy within a few kilometers.
Distance from Kerkyra-I. Kapodistrias Airport to Athens-Ellinikon International Airport as the crow flies is 379 km (237 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.
languages: 
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NAMC YS-11
- 182 built
- 10th loss
- 5th fatal accident
- 3rd worst accident (at the time)
- 4th worst accident (currently)
Greece- 3rd worst accident (at the time)
- 8th worst accident (currently)