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Atlas / NTSB / LAX94LA175

NTSB CAROL · Event

Event LAX94LA175

1994-03-28 HYAMPOM, California, United States Airport · Q75 None 1 aircraft Status: Completed

Registry · N4045N

FAA Aircraft Registry record.

Make / Model

MOONEY M20C

Year of manufacture

1968 · 26 years old at event

Engine

LYCOMING O&VO-360 SER (180 hp)

Seats / Engines

4 seats · 1 engine

ADS-B equipped

Yes — Mode-S A4BE91

Registrant of record

PRIVATE FLIGHTS INC

Source: FAA Aircraft Registry (releasable master file).

Aircraft involved

Probable cause & findings

THE PILOT'S FAILURE TO FOLLOW PROPER PROCEDURES BY ASSURING THAT THE LANDING GEAR LOCKING MECHANISM WAS PROPERLY ENGAGED.

Factual narrative

On March 28, 1994, at 1630 hours Pacific standard time, a Mooney M-20C, N4045N, gear collapsed while landing on runway 14 at Hyampom Airport, Hyampom, California. The pilot was completing a visual flight rules personal flight. The airplane, registered to and operated by the pilot, sustained substantial damage. Neither the certificated private pilot nor any of the three passengers were injured. Visual meteorological conditions prevailed. The flight originated at Hayfork Airport, Hayfork, California, at 1615 hours. The pilot reported in a telephone interview conducted on March 28, 1994, that the landing gear is a mechanically operated system. During the landing roll, the landing gear handle disengaged from its latching mechanism and the landing gears retracted. He also said that he encountered turbulence when he extended that landing gear. The Safety Board retained Mr. Paul Israel, General Aviation Enterprises, Hayfork, California, to examine the airplane's landing gear system. Mr. Israel reported that he was unable to dislodge the handle (aka Johnson Bar) after placing the airplane on jacks with the landing gear extended. The handle was in the locked position. He also said that he did not find any landing gear system defects. WHILE ON THE DOWNWIND LEG, THE PILOT FAILED TO PROPERLY ENGAGE THE LANDING GEAR HANDLE IN THE EXTENDED POSITION LOCKING MECHANISM. DURING THE LANDING ROLL-OUT, THE LANDING GEAR HANDLE DISLODGED FROM THE LOCKING MECHANISM AND THE LANDING GEARS RETRACTED. THE POST ACCIDENT EXAMINATION OF THE LANDING GEAR LOCKING MECHANISM REVEALED NO EVIDENCE OF ANY PREEXISTING MALFUNCTIONS OR FAILURES. THE LANDING GEAR LOCKING MECHANISM OPERATED NORMALLY. Source: NTSB Aviation Accident Database (Pre-2008 Archive) Retrieved: 2026-02-12

Verbatim from NTSB's published report. Source file NTSB_1994_LAX94LA175.txt. Findings + structured fields enriched from FAA avall.mdb. Full investigation docket on data.ntsb.gov ↗.

Related research

What the literature says.

Academic papers and agency reports matching this event's aircraft type or causal vocabulary (turbulence). Sourced from NASA NTRS, NTSB Safety Studies, FAA CAMI, AOPA Air Safety Institute, Embry-Riddle Scholarly Commons, arXiv, and the Semantic Scholar academic graph.

Browse the full corpus — academia portal ↗