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Atlas / NTSB / NYC91LA248

NTSB CAROL · Event

Event NYC91LA248

1991-09-28 ATLANTIC CITY, New Jersey, United States Airport · ACY None 1 aircraft Status: Completed

Registry · N159MC

FAA Aircraft Registry record.

Make / Model

FAIRCHILD SA227-AC

Engine

AIRESEARCH TPE331 SERIES (904 hp)

Seats / Engines

12 seats · 2 engines

Last airworthiness date

19881208

ADS-B equipped

Yes — Mode-S A0ECB4

Registrant of record

GAS/WILSON INC

Source: FAA Aircraft Registry (releasable master file).

Aircraft involved

Probable cause & findings

A FAILURE OF THE DOWN LOCK ROLLER BEARINGS OF THE RIGHT MAIN LANDING GEAR, AS THE RESULT OF AN IMPROPER MODIFICATION.

Factual narrative

THE AIRPLANE TOUCHED DOWN ON RUNWAY 31. UPON TOUCHDOWN, THE RIGHT MAIN LANDING GEAR COLLAPSED AND THE AIRPLANE VEERED OFF THE RIGHT SIDE OF THE RUNWAY. THE AIRPLANE HAD RECENTLY UNDERGONE A MODIFICATION TO INCREASE ITS GROSS OPERATING WEIGHT FROM 14,500 TO 16,000 POUNDS. IT WAS FOUND THAT BOTH ACTUATOR POSITIONING CAMS HAD BEEN GROUND DOWN AT THE DOWN LOCK LOBES. REMOVAL OF MATERIAL FROM THE CAMS IS NOT AUTHORIZED ON THIS AIRPLANE. BOTH RIGHT MAIN LANDING GEAR DOWN LOCK ROLLER BEARING OUTER RACES HAD FAILED. THE FAA FOUND ONE BEARING IN PIECES ON THE RUNWAY, AND THE OTHER WAS NOT RECOVERED. Source: NTSB Aviation Accident Database (Pre-2008 Archive) Retrieved: 2026-02-12

Verbatim from NTSB's published report. Source file NTSB_1991_NYC91LA248.txt. Findings + structured fields enriched from FAA avall.mdb. Full investigation docket on data.ntsb.gov ↗.