ASN Wikibase Occurrence # 355168
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| Date: | Saturday 4 October 1997 |
| Time: | 08:10 LT |
| Type: |  Boeing 737-200 |
| Owner/operator: | Southwest Airlines |
| Registration: | N129SW |
| MSN: | 22340/678 |
| Year of manufacture: | 1980 |
| Total airframe hrs: | 49400 hours |
| Engine model: | P&W JT8D-9 |
| Fatalities: | Fatalities: 0 / Occupants: 50 |
| Aircraft damage: | Minor |
| Category: | Serious incident |
| Location: | Chicago, IL -
 United States of America
|
| Phase: | Landing |
| Nature: | Unknown |
| Departure airport: | Kansas City, MO (KMCI) |
| (KMDW) | |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
The left main landing gear outboard wheel/brake assembly separated from the airplane during a landing roll. The Captain did not report any difficulties in controlling the airplane. Inspection of the failed axle revealed a crack which originated at the surface of one of the brake flange holes. This crack had previously been repaired. Detailed metallurgical examination of the crack revealed properties consistent with the surface having been heated to an excessive temperature during the repair process.
Probable Cause: an improper repair to a crack in a brake flange hole on the left main landing gear outboard axle, and subsequent fatigue failure of the axle.
Accident investigation:
 |
|
Sources:
NTSB CHI98IA007
Location
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 12-Mar-2024 09:04 | ASN Update Bot | Added |
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