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NYC90LA134

1990-06-21 · PITTSTOWN, New Jersey, United States · Minor · 1 aircraft · Status: Completed

Airport N40

Current FAA registration · N110ES

Make / Model
HUGHES 269A
Engine
LYCOMING I0360 SER (180 hp)
Seats / Engines
2 seats · 1 engine
Last airworthiness date
19741024
ADS-B equipped
Yes — Mode-S A02CA8

Source: FAA Aircraft Registry (releasable master file).

Aircraft involved

Probable cause & findings

GROUND RESONANCE DUE TO INADEQUATE SERVICING AND MAINTENANCE OF THE LANDING GEAR DAMPERS.

Factual narrative

THE PILOT HAD JUST LANDED AFTER A SOLO HELICOPTER TRANSITION FLIGHT. AFTER TOUCHDOWN SHE LOWERED THE COLLECTIVE AND ROLLED OFF THE THROTTLE. THE HELICOPTER ENTERED GROUND RESONANCE AND WAS DESTROYED. POST-CRASH EXAMINATION SHOWED ONE OF THE LANDING GEAR DAMPERS HAD DRIED HYDRAULIC FLUID RESIDUE ON THE BOOT AND PISTON, AND HAD COLLAPSED. TWO OTHER LANDING GEAR DAMPERS WERE ABLE TO BE COMPRESSED BY HAND. ACCORDING TO SCHWEIZER ACFT CO., PROPERLY SERVICED AND MAINTAINED LANDING GEAR DAMPERS WILL NOT COLLAPSE DURING GROUND RESONANCE. Source: NTSB Aviation Accident Database (Pre-2008 Archive) Retrieved: 2026-02-12

Verbatim from NTSB's published report. Source file NTSB_1990_NYC90LA134.txt. Findings + structured fields enriched from FAA avall.mdb. Full investigation docket on data.ntsb.gov ↗.

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