ASN Wikibase Occurrence # 353034
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| Date: | Sunday 11 July 1999 |
| Time: | 20:10 LT |
| Type: |  Piper PA-23-250 |
| Owner/operator: | Private |
| Registration: | N65PR |
| MSN: | 277405289 |
| Year of manufacture: | 1974 |
| Engine model: | Lycoming IO-540-C4B5 |
| Fatalities: | Fatalities: 0 / Occupants: 6 |
| Aircraft damage: | Substantial |
| Category: | Accident |
| Location: | Snohomish, WA -
 United States of America
|
| Phase: | Landing |
| Nature: | Private |
| Departure airport: | Wilbur, WA (2S8) |
| (S43) | |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
The pilot reported that the touchdown and rollout were normal for about 300 feet. The pilot stated that as he applied the brakes, the left brake failed and the airplane swerved to the right and off the side of the runway. Due to people and equipment near the runway, and in the aircraft's path, the pilot utilized nose wheel steering and right throttle control to redirect the aircraft. The aircraft continued about 80 feet over freshly graded terrain before entering an open field covered with tall grass. The aircraft collided with a ditch and subsequently an abandoned truck before coming to rest. Shortly after the accident, the brake system was inspected. It was found that the left brake pedal would make full travel with no apparent braking action. After applying pumping action, there was a gradual rise of the pedal and braking action. Further inspection of the system did not reveal any mechanical failures or malfunctions. The brake lines were then bled and a considerable amount of air bubbles were noted.
Probable Cause: Brake system failure due to the presence of air bubbles in the hydraulic fluid.
Accident investigation:
 |
|
Sources:
NTSB SEA99LA131
Location
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 09-Mar-2024 09:35 | ASN Update Bot | Added |
Corrections or additions? ... Edit this accident description
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