ASN Wikibase Occurrence # 365049
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| Date: | Thursday 27 June 1991 |
| Time: | 13:15 LT |
| Type: |  Piper PA-28-140 |
| Owner/operator: | Private |
| Registration: | N1898J |
| MSN: | 28 24344 |
| Year of manufacture: | 1968 |
| Engine model: | LYCOMING O-320-E2A |
| Fatalities: | Fatalities: 0 / Occupants: 1 |
| Aircraft damage: | Substantial |
| Category: | Accident |
| Location: | Flagstaff, AZ -
 United States of America
|
| Phase: | En route |
| Nature: | Private |
| Departure airport: | Flagstaff, AZ (KFLG) |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
A PIPER PA 28-140 COLLIDED WITH TREES AFTER A LOSS OF ENGINE POWER. THE AIRPLANE WRECKAGE WAS EXAMINED BY THE FAA. SIX OF THE EIGHT SPARK PLUGS EXHIBITED SOOTY DARK ELECTRODES. ACCORDING TO THE ENGINE MANUFACTURER, THE ELECTRODE APPEARANCE WAS INDICATIVE OF A RICH MIXTURE. EXAMINATION OF THE AIRPLANE'S FUEL PRIMER REVEALED IT WAS UNLOCKED. ACCORDING TO THE ENGINE MANUFACTURER THIS COULD RESULT IN AN OVER PRIMED OR RICH MIXTURE. THE RICH MIXTURE AND HIGH ALTITUDE COULD RESULT IN A LOSS OF ENGINE POWER.
Probable Cause: FAILURE OF THE PILOT-IN-COMMAND TO PROPERLY LOCK THE ENGINE PRIMER CONTROL WHICH RESULTED IN AN OVER RICH FUEL TO AIR MIXTURE AND SUBSEQUENT LOSS OF ENGINE POWER.
Accident investigation:
 |
|
Sources:
NTSB LAX91LA279
Location
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 20-Mar-2024 06:06 | ASN Update Bot | Added |
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