ASN Wikibase Occurrence # 366982
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| Date: | Tuesday 15 May 1990 |
| Time: | 13:50 LT |
| Type: |  Piper PA-23-160 |
| Owner/operator: | Private |
| Registration: | N4232P |
| MSN: | 23-1729 |
| Year of manufacture: | 1960 |
| Engine model: | LYCOMING O-320 |
| Fatalities: | Fatalities: 0 / Occupants: 5 |
| Aircraft damage: | Substantial |
| Category: | Accident |
| Location: | Flagstaff, AZ -
 United States of America
|
| Phase: | En route |
| Nature: | Private |
| Departure airport: | Phoenix, AZ (KPHX) |
| Phoenix, AZ (KPHX) | |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
AFTER SWITCHING FUEL TANKS FROM THE AUX TO THE MAIN POSITION, THE LEFT ENGINE LOST POWER. THE PILOT SAID THE LEFT SELECTOR LEVER WAS 'VERY STIFF AND HARD TO MOVE.' HE SAID THAT HE TRIED TO RECYCLE THE SELECTOR LEVER BUT THAT DID NOT CURE THE PROBLEM. THE POWER AVAILABLE FROM THE GOOD ENGINE WAS INSUFFICIENT TO MAINTAIN LEVEL FLIGHT. WHEN IT BECAME APPARENT THAT THE AIRCRAFT WOULD NOT REACH THE AIRPORT, THE PILOT SELECTED A SUITABLE LANDING AREA ALONG A DIRT ROAD. THE AIRCRAFT WAS IN THE LANDING FLARE WHEN THE PILOT SAID THE LEFT ENGINE SUDDENLY PRODUCED A BURST OF POWER. THE SUDDEN POWER SURGE INDUCED A SEVERE YAW AND ROLL WHICH CAUSED THE AIRCRAFT WING TO CONTACT THE GROUND. AN FAA INSPECTOR EXAMINED THE AIRCRAFT AND FOUND THE CABLE FOR THE LEFT SELECTOR VALVE WAS BINDING. THE VALVE WAS FOUND IN AN INTERMEDIATE POSITION BETWEEN THE MAIN AND AUX POSITION.
Probable Cause: THE FAILURE OF THE PILOT TO MAINTAIN DIRECTIONAL CONTROL AND TO FEATHER THE PROPELLER. A FACTOR WAS ERRATIC POWER FROM THE LEFT ENGINE DUE TO THE JAMMING OF THE FUEL SELECTOR VALVE IN AN INTERMEDIATE POSITION.
Accident investigation:
 |
|
Sources:
NTSB LAX90LA175
Location
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 22-Mar-2024 06:17 | ASN Update Bot | Added |
Corrections or additions? ... Edit this accident description
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