ASN Wikibase Occurrence # 359062
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| Date: | Monday 1 May 1995 |
| Time: | 10:30 LT |
| Type: |  Cessna 172 |
| Owner/operator: | Methow Valley Flyers, Inc. |
| Registration: | N2548Y |
| MSN: | 17249848 |
| Year of manufacture: | 1962 |
| Total airframe hrs: | 3234 hours |
| Engine model: | CONTINENTAL O-300 |
| Fatalities: | Fatalities: 0 / Occupants: 1 |
| Aircraft damage: | Substantial |
| Category: | Accident |
| Location: | Twisp, WA -
 United States of America
|
| Phase: | Landing |
| Nature: | Private |
| Departure airport: | |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
AFTER SEVERAL TOUCH-AND-GO LANDINGS, THE PRIVATE PILOT MADE A FULL STOP LANDING, TAXIED BACK, AND TOOK OFF AGAIN. NO PROBLEMS WERE REPORTED DURING THE TAKEOFF. THE PILOT ENTERED THE TRAFFIC PATTERN AND ATTEMPTED ANOTHER LANDING. THE PILOT STATED THAT SHE IMMEDIATELY LOST DIRECTIONAL CONTROL OF THE AIRPLANE AFTER THE NOSE LANDING GEAR SETTLED ONTO THE RUNWAY. THE AIRPLANE VEERED OFF THE LEFT SIDE OF THE RUNWAY, SKIDDED INTO THE DIRT, NOSED OVER, AND WAS SUBSTANTIALLY DAMAGED. EXAMINATION OF THE NOSE LANDING GEAR ASSEMBLY REVEALED THAT THE CENTER SCISSOR BOLT WAS MISSING AND THE NOSE GEAR WAS COCKED TO ONE SIDE. THE BOLT WAS FOUND ON THE RUNWAY ABOUT 800 FEET FROM THE WRECKAGE. EXAMINATION OF THE BOLT REVEALED THAT NO COTTER KEY HAD BEEN INSTALLED TO SECURE THE NUT.
Probable Cause: THE IMPROPER INSTALLATION OF A NOSE LANDING GEAR ASSEMBLY BOLT (NO COTTER KEY INSTALLED) BY UNKNOWN MAINTENANCE PERSONNEL. THIS LED TO A FAILURE OF THE NOSE LANDING GEAR STEERING AND SUBSEQUENT NOSEOVER DURING LANDING ROLLOUT.
Accident investigation:
 |
|
Sources:
NTSB SEA95LA087
Location
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 15-Mar-2024 06:33 | ASN Update Bot | Added |
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