Narrative:
The Heron aircraft approached Fuenterrabia normally at an altitude of 900 m. The pilot circled the field to lose height for a runway 06 approach. Touchdown was at about 150 m past the threshold at high speed. Braking action proved ineffective and the aircraft overran the runway into a slough in the estuary of the Bidasoa River. It appeared that a leak in the pneumatic system caused the brakes to be ineffective.
PROBABLE CAUSE: "The total discharge of the air system bottles, owing to the internal leak in the landing gear selector, prevented brake functioning."
| Status: | Accident investigation report completed and information captured |
| Date: | Saturday 26 October 1957 |
| Type: |  de Havilland DH-114 Heron 2D |
| Operator: | Aviaco |
| Registration: | EC-AOA |
| MSN: | 14120 |
| First flight: | 1957 |
| Crew: | Fatalities: 0 / Occupants: 5 |
| Passengers: | Fatalities: 0 / Occupants: 17 |
| Total: | Fatalities: 0 / Occupants: 22 |
| Aircraft damage: | Damaged beyond repair |
| Location: | San Sebastián-Fuenterrabia Airport (EAS) ( Spain)
|
| Phase: | Landing (LDG) |
| Nature: | Domestic Scheduled Passenger |
| Departure airport: | Madrid-Barajas Airport (MAD/LEMD), Spain |
| San Sebastián-Fuenterrabia Airport (EAS/LESO), Spain |
The Heron aircraft approached Fuenterrabia normally at an altitude of 900 m. The pilot circled the field to lose height for a runway 06 approach. Touchdown was at about 150 m past the threshold at high speed. Braking action proved ineffective and the aircraft overran the runway into a slough in the estuary of the Bidasoa River. It appeared that a leak in the pneumatic system caused the brakes to be ineffective.
Probable Cause:
PROBABLE CAUSE: "The total discharge of the air system bottles, owing to the internal leak in the landing gear selector, prevented brake functioning."
Classification:
Runway excursion
Sources:
» ICAO Accident Digest, Circular 59-AN/54 (32)Photos
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 Madrid-Barajas Airport to San Sebastián-Fuenterrabia Airport as the crow flies is 348 km (218 miles).
Distance from Madrid-Barajas Airport to San Sebastián-Fuenterrabia Airport as the crow flies is 348 km (218 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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