ASN Wikibase Occurrence # 364211
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| Date: | Friday 29 November 1991 |
| Time: | 04:05 LT |
| Type: |  Piper PA-31-350 |
| Owner/operator: | Alpine Air, Inc. |
| Registration: | N354AC |
| MSN: | 31-7752049 |
| Engine model: | LYCOMING LTSID-540-J2B |
| Fatalities: | Fatalities: 0 / Occupants: 2 |
| Aircraft damage: | Substantial |
| Category: | Accident |
| Location: | Denver, CO -
 United States of America
|
| Phase: | Approach |
| Nature: | Unknown |
| Departure airport: | Salt Lake City, UT (KSLC) |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
DURING THE APPROACH, THE PILOT COULD NOT OBTAIN A GEAR DOWN AND LOCKED INDICATION ON THE LEFT MAIN LANDING GEAR. HE ELECTED TO LAND GEAR UP WHICH CAUSED SUBSTANTIAL DAMAGE TO THE BOTTOM OF THE FUSELAGE. POSTACCIDENT TESTS REVEALED THAT THE LEFT MAIN LANDING GEAR DOWN LOCK SWITCH HAD FROZEN FROM AN ACCUMULATION OF ICE. WEATHER CONDITIONS AT THE TIME INCLUDED ICING, LOW CEILINGS AND LOW VISIBILITY. PRIOR TO THE ACCIDENT, THE PILOT REPORTED ACCUMULATIONS OF MODERATE ICE. FOLLOWING THE ACCIDENT, ICE ACCUMULATION OF UP TO 3 INCHES WAS FOUND ON THE AIRCRAFT.
Probable Cause: A FALSE UNSAFE LANDING GEAR INDICATION DUE TO A FROZEN DOWN LOCK SWITCH. FACTORS WERE: ICING CONDITIONS AND LOW CEILINGS.
Accident investigation:
 |
|
Sources:
NTSB DEN92LA012
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 19-Mar-2024 12:43 | ASN Update Bot | Added |
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