ASN Wikibase Occurrence # 358416
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| Date: | Friday 18 August 1995 |
| Time: | 11:55 LT |
| Type: |  Boeing 737-3H4 |
| Owner/operator: | Southwest Airlines |
| Registration: | N309SW |
| MSN: | 22948/1160 |
| Year of manufacture: | 1985 |
| Engine model: | GE CFM-56 |
| Fatalities: | Fatalities: 0 / Occupants: 114 |
| Aircraft damage: | Minor |
| Category: | Serious incident |
| Location: | Lubbock, TX -
 United States of America
|
| Phase: | Take off |
| Nature: | Unknown |
| Departure airport: | (KLBB) |
| Albuquerque, NM | |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
During takeoff at Lubbock, Texas, the number three wheel assembly separated from the axle. The aircrew continued the flight and landed uneventfully at Albuquerque, New Mexico. Company maintenance records indicated the wheel assembly was last replaced on August 16, 1995. Examination of the aircraft revealed that the axle nut was intact on the axle along with the tang washer. The axle nut locking ring was also in place. The outer bearing was found deteriorated with only its inner race remaining, and the inner bearing remained intact on the axle. Examination of the components revealed that, an incorrect inner bearing had been installed inadvertently by the wheel assembly supplier on the number three wheel assembly. A Timkin part number 594 bearing was installed in lieu of the correct Timkin part number 596 bearing.
Probable Cause: installation of an incorrect bearing in the number three main wheel by the wheel assembly supplier, which led to subsequent failure of the wheel bearing and separation of the wheel during takeoff.
Accident investigation:
 |
|
Sources:
NTSB FTW95IA348
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 14-Mar-2024 13:12 | ASN Update Bot | Added |
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