ASN Wikibase Occurrence # 366162
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| Date: | Saturday 22 September 1990 |
| Time: | 08:30 LT |
| Type: |  Piper PA-28-151 |
| Owner/operator: | Private |
| Registration: | N44678 |
| MSN: | 28-7515003 |
| Total airframe hrs: | 1750 hours |
| Engine model: | LYCOMING O-320-E3D |
| Fatalities: | Fatalities: 0 / Occupants: 2 |
| Aircraft damage: | Substantial |
| Category: | Accident |
| Location: | Palmetto, GA -
 United States of America
|
| Phase: | Standing |
| Nature: | Private |
| Departure airport: | |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
DURING PREFLIGHT, THE PILOT OBSERVED A VIBRATION AFTER ENGINE START. HE ASSUMED HE HAD A FOULED SPARK PLUG AND LEANED THE MIXTURE. HE THEN SHUT DOWN THE ENGINE. AFTER RE-START, HE STATED THAT THE VIBRATION HAD CEASED. AT ABOUT 25 FEET AGL ON INITIAL CLIMBOUT, THE ENGINE SUDDENLY LOST POWER. THE AIRPLANE COLLIDED WITH SOME POWER LINES AND A TRAILER PRIOR TO IMPACTING TERRAIN. AN INSPECTION OF THE ENGINE REVEALED A STUCK NUMBER TWO EXHAUST VALVE. A WITNESS ON THE GROUND STATED THAT HE HEARD A 'HISSING' NOISE COMING FROM THE ENGINE DURING THE PREFLIGHT GROUND RUN. HE ALSO REPORTED THAT THE PILOT PERFORMED BETWEEN FOUR AND SIX MAGNETO CHECKS PRIOR TO TAKEOFF.
Probable Cause: THE NUMBER TWO CYLINDER EXHAUST VALVE STICKING IN THE CLOSED POSITION, WHICH RESULTED IN A PARTIAL POWER LOSS DURING THE TAKEOFF. A FACTOR IN THE ACCIDENT WAS THE PILOT'S IMPROPER PREFLIGHT INSPECTION, IN THAT HE DID NOT CORRECTLY ANALYZE THE ENGINE PROBLEM PRIOR TO FLIGHT.
Accident investigation:
 |
|
Sources:
NTSB ATL90LA174
Location
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 20-Mar-2024 18:01 | ASN Update Bot | Added |
Corrections or additions? ... Edit this accident description
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