Event CHI92LA281

1992-09-05 WHEELING, Illinois, United States Airport · PWK None 1 aircraft Status: Completed

Registry · N9578B

FAA Aircraft Registry record.

Make / Model

CESSNA 172RG

Year of manufacture

1981 · 11 years old at event

Engine

LYCOMING O&VO-360 SER (180 hp)

Seats / Engines

4 seats · 1 engine

Last airworthiness date

19810701

ADS-B equipped

Yes — Mode-S AD521A

Registrant of record

HALSETH HARALD E

Source: FAA Aircraft Registry (releasable master file).

Aircraft involved

N9578B Cessna 172RG None

Probable cause & findings

MAIN LANDING GEAR COLLAPSE AS A RESULT OF THE FAILURE OF A LANDING GEAR HYDRAULIC PUMP SEAL.

Factual narrative

THE PILOT WAS MAKING PATTERN APPROACH FOR LANDING. HE STATED THAT HE VISUALLY CONFIRMED THE LANDING GEAR WAS DOWN. DURING LANDING ROLLOUT BOTH MAIN LANDING GEAR COLLAPSED. THE INVESTIGATION REVEALED THAT A SEAL ON THE LANDING GEAR HYDRAULIC PUMP HAD RUPTURED RESULTING IN LOSS OF SYSTEM FLUID. Source: NTSB Aviation Accident Database (Pre-2008 Archive) Retrieved: 2026-02-12

Verbatim from NTSB's published report. Source file NTSB_1992_CHI92LA281.txt. Findings + structured fields enriched from FAA avall.mdb. Full investigation docket on data.ntsb.gov ↗.

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