ASN Wikibase Occurrence # 356175
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| Date: | Monday 10 March 1997 |
| Time: | 14:21 LT |
| Type: |  Boeing 727-2K5 |
| Owner/operator: | Aeromexpress |
| Registration: | N909PG |
| MSN: | 21853/1640 |
| Year of manufacture: | 1980 |
| Total airframe hrs: | 40423 hours |
| Engine model: | P&W JT8D-17 |
| Fatalities: | Fatalities: 0 / Occupants: 4 |
| Aircraft damage: | Minor |
| Category: | Serious incident |
| Location: | Dfw Airport, TX -
 United States of America
|
| Phase: | Take off |
| Nature: | Unknown |
| Departure airport: | (KDFW) |
| Mexico City, OF (KMEX) | |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
The right hand inboard main landing gear wheel assembly departed the aircraft during the takeoff roll. The crew returned the aircraft to the departure airport and the flight landed without further incident. Visual examination revealed that the outer cone-bearing seized. The bearing race, retainer ring, and axle were damaged and the inner ring of the outer wheel bearing exhibited deformation, rubbing, cracking, and galling. None of the bearing rollers were recovered. Metallurgical examination disclosed that the inner wheel bearing migrated approximately 1.5 inches in the inboard direction. The outer bearing ring showed rub damage on the circumference of the inner and outer diameter and the bearing cage. The bolt that locked the wheel retaining nut was fractured; however, it could not be determined if the fracture of the bolt contributed to or was the result of the bearing damage. The inner ring of the outer wheel bearing displayed heat damage and localized melting. The damage of the inner ring 'appeared to be more consistent with bearing deterioration caused by inadequate or loss of preloading rather than a bearing seizure event.'
Probable Cause: failure of the outer bearing for undetermined reason(s).
Accident investigation:
 |
|
Sources:
NTSB FTW97IA119
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 12-Mar-2024 19:51 | ASN Update Bot | Added |
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