NTSB CHI90LA238 — 1990-08-18 · WINFIELD, Kansas, United States

Current FAA registration · N74745

Make / Model: MOONEY M20B
Year of manufacture: 1961 · 29 years old at event
Engine: LYCOMING O&VO-360 SER (180 hp)
Seats / Engines: 4 seats · 1 engine
Last airworthiness date: 19610407
ADS-B equipped: Yes — Mode-S AA0F8D

Source: FAA Aircraft Registry (releasable master file).

Aircraft involved

N74745 Mooney M20B None

Probable cause & findings

NON-COMPLIANCE OF AN AIRWORTHINESS DIRECTIVE BY MAINTENANCE PERSONNEL.

Factual narrative

THE LEFT MAIN LANDING GEAR COLLAPSED DURING LANDING ROLLOUT AND THE AIRPLANE DEPARTED THE LEFT SIDE OF THE RUNWAY. EXAMINATION OF THE AIRPLANE SHOWED THE LEFT MAIN GEAR RETRACTING TRUSS FAILED AT A WELD, ALLOWING THE GEAR TO COLLAPSE. THE FAILED PART HAS BEEN OBSOLETE SINCE THE ISSUANCE OF AD 73-21-01 WHICH DIRECTED REPLACEMENT OF RETRACTING LINKS ON MODEL M20 AIRPLANES AND REFERRED TO MOONEY SERVICE BULLETIN M20-155. THE BULLETIN FURTHER SPECIFIES THAT THIS AIRCRAFT BY SERIAL NUMBER REQUIRES REPLACEMENT OF THE RETRACTING TRUSSES TO UTILIZE THE NEW LINKS. THE AIRFRAME LOG SHOWED THE AD SIGNED OFF WITH 'NEW RETRACT LINKS' INSTALLED. RIGHT MAIN AND NOSE GEAR TRUSSES WERE ALSO ORIGINAL AND OBSOLETE. Source: NTSB Aviation Accident Database (Pre-2008 Archive) Retrieved: 2026-02-12

Verbatim from NTSB's published report. Source file NTSB_1990_CHI90LA238.txt. Findings + structured fields enriched from FAA avall.mdb. Full investigation docket on data.ntsb.gov ↗.

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