CHI91LA182
1991-06-06 · FORT WAYNE, Indiana, United States · None · 1 aircraft · Status: Completed
Airport FWA
Aircraft involved
Probable cause & findings
THE IMPROPER INSTALLATION OF A BEARING BY MAINTENANCE PERSONNEL.
Factual narrative
THE RIGHT MAIN REMAINED RETRACTED WHEN THE GEAR WERE SELECTED DOWN, AND THE PILOT LANDED ON TWO WHEELS. EXAMINATION OF THE HUNG GEAR SHOWED AN EXTERNAL LOCK RING ON THE STRUT PISTON ASSEMBLY HAD UNSEATED, ALLOWING THE STRUT TO OVEREXTEND AND JAM IN ITS WELL. THE INNER BEARING WHICH MOUNTS NEXT TO THE LOCK RING GROOVE WAS INSTALLED BACKWARDS. THE OPPOSITE LANDING GEAR HAD THE SAME INVERSE INSTALLATION. BOTH INNER BEARINGS WERE NEW PARTS INSTALLED DURING ACCOMPLISHMENT OF AN AIRWORTHINESS DIRECTIVE 5 DAYS BEFORE THE ACCIDENT. THE MANUFACTURER'S SERVICE MANUAL PROVIDES INSTRUCTIONS FOR THE CORRECT ORIENTATION OF THE INNER BEARINGS. Source: NTSB Aviation Accident Database (Pre-2008 Archive) Retrieved: 2026-02-12
Verbatim from NTSB's published report. Source file
NTSB_1991_CHI91LA182.txt.
Findings + structured fields enriched from FAA avall.mdb.
Full investigation docket on
data.ntsb.gov ↗.
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