ASN Wikibase Occurrence # 366332
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| Date: | Tuesday 21 August 1990 |
| Time: | 09:04 LT |
| Type: |  Boeing 737-322 |
| Owner/operator: | United Airlines |
| Registration: | N305UA |
| MSN: | 23666/1332 |
| Year of manufacture: | 1987 |
| Engine model: | CFM 56-3B-2 |
| Fatalities: | Fatalities: 0 / Occupants: 138 |
| Aircraft damage: | Minor |
| Category: | Serious incident |
| Location: | Los Angeles, CA -
 United States of America
|
| Phase: | Approach |
| Nature: | Unknown |
| Departure airport: | Oakland, CA (KOAK) |
| Burbank, CA (KBUR) | |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
THE FLIGHT OF UAL FLIGHT 1257 WAS UNEVENTFUL UNTIL THE CREW EXTENDED THE LANDING GEAR FOR LANDING AT THE DESTINATION AND RECEIVED AN UNSAFE RIGHT MAIN LANDING GEAR INDICATION. THE CREW WAS UNABLE TO EXTEND THE GEAR AND PRECEDED TO AN AIRPORT WITH A LONGER RUNWAY FOR A GEAR UP LANDING. THE LANDING WAS ACCOMPLISHED WITHOUT INJURIES. THE RIGHT POWERPLANT NACELLE RECEIVED INCIDENTAL DAMAGE DURING THE LANDING TOUCHDOWN. WHEN THE RIGHT LANDING GEAR WAS OPENED A 3 CELL FLASHLIGHT WAS FOUND SANDWICHED BETWEEN THE CARGO FLOORING AND THE LANDING GEAR RETRACT/EXTEND LINKAGE.
Probable Cause: IMPROPER MAINTENANCE SERVICE BY A COMPANY EMPLOYEE WHO ALLOWED A FOREIGN OBJECT (FLASHLIGHT) TO REMAIN IN THE LANDING GEAR EXTEND/RETRACT LINKAGE DURING A NIGHT SERVICING BEFORE THE FLIGHT.
Accident investigation:
 |
|
Sources:
NTSB LAX90IA293
History of this aircraft
Other occurrences involving this aircraft
| 29 October 1987 | N305UA | United Airlines | 0 | Chicago, IL | |
non |
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 20-Mar-2024 19:52 | ASN Update Bot | Added |
Corrections or additions? ... Edit this accident description
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