ASN Wikibase Occurrence # 278922
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| Date: | Monday 22 July 2019 |
| Time: | 11:47 LT |
| Type: |  Cessna 402B |
| Owner/operator: | Western Airlines Lc |
| Registration: | N7947Q |
| MSN: | 402B-0397 |
| Year of manufacture: | 1973 |
| Total airframe hrs: | 24024 hours |
| Engine model: | Continental TSIO-520-EB |
| Fatalities: | Fatalities: 0 / Occupants: 3 |
| Aircraft damage: | Substantial |
| Category: | Accident |
| Location: | Boise Airport, Boise, ID -
 United States of America
|
| Phase: | Landing |
| Nature: | Unknown |
| Departure airport: | Boise Airport, ID (BOI/KBOI) |
| Boise Airport, ID (BOI/KBOI) | |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
The pilot reported that, during the landing approach, he selected the landing gear selector switch to the down position, which was followed by "three greens," indicating that the landing gear was down, locked, and safe for landing. He noted that all three occupants verified and verbally confirmed that the landing gear was "down and locked." The airplane landed uneventfully, but as the pilot started a left turn onto the taxiway, the right main landing gear collapsed, and the right wing struck the ground, sustaining substantial damage.
A postaccident examination of the landing gear system revealed that the right main landing gear assembly bell crank pivot bolt had sheared and displayed features consistent with a ductile overstress fracture from shear loading.
Probable Cause: A ductile overstress fracture failure of the right main landing gear bell crank assembly pivot bolt, which resulted in a collapse of the right main landing gear.
Accident investigation:
 |
|
Sources:
NTSB ANC19LA039
Location
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 05-Jun-2022 12:19 | ASN Update Bot | Added |
| 16-Sep-2023 11:56 | Ron Averes | Updated |
Corrections or additions? ... Edit this accident description
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