ASN Wikibase Occurrence # 363845
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| Date: | Friday 10 April 1992 |
| Time: | 14:46 LT |
| Type: |  Piper PA-34-200 |
| Owner/operator: | Atc Flight Center, Inc. |
| Registration: | N41632 |
| MSN: | 34-74501432 |
| Total airframe hrs: | 2646 hours |
| Engine model: | LYCOMING LIO-360-C1E6 |
| Fatalities: | Fatalities: 0 / Occupants: 2 |
| Aircraft damage: | Substantial |
| Category: | Accident |
| Location: | Tucson, AZ -
 United States of America
|
| Phase: | Landing |
| Nature: | Training |
| Departure airport: | |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
ACCORDING TO THE PILOT-IN-COMMAND, WHO WAS DEMONSTRATING HER COMPETENCY TO THE DESIGNATED PILOT EXAMINER FOR THE PURPOSE OF OBTAINING HER MULTIENGINE FLIGHT INSTRUCTOR CERTIFICATE, NO ANOMALIES OCCURRED WITH THE AIRPLANE DURING THE FLIGHT. THE LANDING APPEARED NORMAL EXCEPT THAT DURING ROLLOUT THE GEAR DOWN AND LOCKED LIGHT TURNED OFF. THE GEAR WARNING HORN SOUNDED AND THE LEFT GEAR BROKE OFF THE AIRPLANE. THE PILOT LOST CONTROL OF THE AIRPLANE, IT VEER OFF THE RUNWAY, AND THEN COLLIDED WITH A SIGN. EXAM OF THE LEFT MAIN LANDING GEAR REVEALED IT POSSESSED A PREEXISTING FATIGUE CRACK ON THE TRUNNION'S OUTER DIAMETER SURFACE IMMEDIATELY ADJACENT TO THE LOWER FILLET RADIUS OF THE WEB. THE CRACK HAD ENLARGED TO A WIDTH OF 1.25 INCHES BEFORE THE TRUNNION FINALLY SEPARATED. THE PILOT REPORTED THAT THE AIRPLANE'S LAST ANNUAL INSPECTION HAD BEEN PERFORMED ABOUT 53 FLIGHT HOURS AND ABOUT 1.5 MONTHS PRIOR TO THE ACCIDENT FLIGHT.
Probable Cause: THE TOTAL FAILURE OF THE LANDING GEAR STRUT (TRUNNION) DUE TO FATIGUE. A FACTOR IN THE ACCIDENT WAS RELATED TO THE INADEQUATELY PERFORMED RECENT ANNUAL INSPECTION.
Accident investigation:
 |
|
Sources:
NTSB LAX92LA171
Location
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 19-Mar-2024 06:43 | ASN Update Bot | Added |
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