ASN Wikibase Occurrence # 294969
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| Date: | Sunday 23 November 2003 |
| Time: | 13:00 LT |
| Type: |  Piper PA-22-135 |
| Owner/operator: | Private |
| Registration: | N8982C |
| MSN: | 22-1565 |
| Year of manufacture: | 1953 |
| Total airframe hrs: | 3048 hours |
| Engine model: | Lycoming O-290-D2 |
| Fatalities: | Fatalities: 0 / Occupants: 2 |
| Aircraft damage: | Substantial |
| Category: | Accident |
| Location: | Emmett, Idaho -
 United States of America
|
| Phase: | Unknown |
| Nature: | Private |
| Departure airport: | Emmett, ID (S78) |
| (S78) | |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
The 118 hour pilot had less than 16 hours in the make/model, and the aircraft was equipped with a closed hydraulic brake system which was temperature sensitive. The pilot departed on a local flight, flew two touch and go landings and then climbed out to a higher (cooler) altitude before returning to the airfield for a full stop landing. During the landing roll the pilot was unable to achieve braking and the aircraft rolled off the upwind end of the runway, down an embankment and into a ditch. A significant drop in temperature had taken place over the previous several days to the flight and, according to a pilot/mechanic with 40 years of experience in the make/model, the aircraft's braking system would become ineffective if the system had less than optimal amount of hydraulic fluid and was then subjected to a significant cold soaking. Post-crash examination of the brakes by an FAA inspector revealed no mechanical malfunction, however the examination was conducted in a heated hangar.
Probable Cause: Brake failure as a result of inadequate hydraulic (brake) fluid in the aircraft's closed brake system. Contributing factors were the pilot's overall lack of experience in the aircraft make/model, the cold soaked brake system due to the low temperatures, and the embankment and ditch.
Accident investigation:
 |
|
Sources:
NTSB SEA04LA021
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 12-Oct-2022 16:22 | ASN Update Bot | Added |
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