ASN Wikibase Occurrence # 314612
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| Date: | Tuesday 27 July 2010 |
| Time: | 11:15 LT |
| Type: |  Cessna 402C |
| Owner/operator: | Hyannis Air Service Inc |
| Registration: | N402VN |
| MSN: | 402C0488 |
| Year of manufacture: | 1981 |
| Total airframe hrs: | 26939 hours |
| Engine model: | Continental TSIO-520 SER |
| Fatalities: | Fatalities: 0 / Occupants: 2 |
| Aircraft damage: | Minor |
| Category: | Serious incident |
| Location: | San Juan, Puerto Rico -
 Puerto Rico
|
| Phase: | Landing |
| Nature: | Unknown |
| Departure airport: | Isla de Vieques, PR (VQS) |
| San Juan, PR (SJU) | |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
Following the pilot's brake application during the landing roll, an undetected fatigue crack that originated on the right upper barrel and trunnion assembly resulted in the separation of the lower portion of the landing gear. The airplane came to rest upright and the pilot and passenger successfully evacuated. A postincident inspection of the failed barrel revealed fatigue that originated on the outer surface and penetrated approximately 90 percent of the wall thickness. At the time of the incident, the operator had been performing visual inspections of the barrels looking for leaks due to cracking from the inside; the last visual inspection of the barrel was performed about 62 hours earlier. At the time of the incident, the manufacturer did not have a special inspection in place to detect fatigue cracks on the outer surface of the barrel, though there had been previous incidents and accidents in which the barrel of the upper barrel and trunnion assembly was documented to have failed due to undetected fatigue cracks that originated on the outer surface.
Probable Cause: The airplane manufacturer's inadequate inspection procedures, resulting in the undetected fatigue cracking of the right upper barrel and trunnion assembly.
Accident investigation:
 |
|
Sources:
NTSB ERA10IA384
Location
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 02-Jun-2023 18:56 | ASN Update Bot | Added |
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