NTSB CAROL · Event
Event SEA90IA042
Aircraft involved
Probable cause & findings
A BREAK FROM PRE-EXISTING INTERGRANULAR CRACKS WHICH LED TO A FRACTURE.
Factual narrative
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. Source: NTSB Aviation Accident Database (Pre-2008 Archive) Retrieved: 2026-02-12
Verbatim from NTSB's published report. Source file
NTSB_1990_SEA90IA042.txt.
Findings + structured fields enriched from FAA avall.mdb.
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