ASN Wikibase Occurrence # 367409
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| Date: | Wednesday 14 February 1990 |
| Time: | 19:50 LT |
| Type: |  Boeing 747-446B |
| Owner/operator: | Boeing Commercial Airplanes |
| Registration: | UNREG |
| MSN: | |
| Engine model: | GE CF6-80C2B1F |
| Fatalities: | Fatalities: 0 / Occupants: 7 |
| Aircraft damage: | Minor |
| Category: | Serious incident |
| Location: | Everett, WA -
 United States of America
|
| Phase: | Landing |
| Nature: | Unknown |
| Departure airport: | Moses Lake, WA (MWH |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
DURING THE LANDING ROLL, AT THE END OF A FLIGHT, THE PILOT REPORTED THAT THE EICAS DISPLAYED A CAUTION MESSAGE OF HYDRAULIC PRESSURE AND QUANTITY AND GEAR DOOR. THE PILOT ALSO NOTED THAT THE AIRPLANE WAS LISTING TO THE RIGHT. IT WAS LATER FOUND THAT THE RIGHT WING LANDING GEAR, OUTER CYLINDER AFT TRUNNION ARM BROKE. THE PART WAS METALLURGICALLY TESTED AND FOUND THAT THE TRUNNION FRACTURED AS A RESULT OF PRE-EXISTING INTERGRANULAR CRACKS.
Probable Cause: A BREAK FROM PRE-EXISTING INTERGRANULAR CRACKS WHICH LED TO A FRACTURE.
Accident investigation:
 |
|
Sources:
NTSB SEA90IA042
Location
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 22-Mar-2024 14:08 | ASN Update Bot | Added |
Corrections or additions? ... Edit this accident description
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