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20040427008349A

Accident · Substantial damage
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FAA accident report · Hughes 269C-1 · Van Nuys, CA · April 27, 2004

FAA Aviation Safety Information Portal

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Date
April 27, 2004 · 14:40 local
Place
Van Nuys, CA
Airport
Van Nuys Airport
Phase of flight
Ground/Ramp/Ma
Operating rules
General operating rules (Part 91)
Damage
Substantial damage
Aircraft
N61415
NTSB investigation
NTSBLAX04LA197
Reported as
Hughes 269C1
Reported engine
Lycoming HO360C1A
People aboard
2
Fatal injuries
0
Pilot’s flight hours
1,100 total600 in this make and model100 in the last 90 days
N61415Registration cancelled Sep 22, 2004 · Schweizer 269C-1S/N 0018 · Built 1995Airframe modelSchweizer 269C-1Engine modelLycoming HO-360 seriesReciprocating

From the FAA’s Accident/Incident Data System (AIDS), through its Aviation Safety Information Portal, as reported. The NTSB investigates accidents separately, and its record of an accident is the fuller one. The aircraft is matched to the registry by N-number and event date, checked against the reported make and model; the registry’s history has gaps, so older matches can be wrong. Compare the reported make and model.

What happened

The FAA’s narrative, in sentence case. The FAA writes it in capitals and removes private details.

(-23) The pilot said that during the run-up, the magneto checks produced a rough running engine. The pilot attempted to correct the roughness by leaning the mixture. The helicopter then began shaking from side to side, indicating ground resonance. Due to the low rotor RPM, the pilot elected to close the throttle rather than lift the helicopter from the ground. The ground resonance increased and the pilot could not control the aircraft.

As the FAA filed it

(-23) THE PILOT SAID THAT DURING THE RUN-UP, THE MAGNETO CHECKS PRODUCED A ROUGH RUNNING ENGINE. THE PILOT ATTEMPTED TO CORRECT THE ROUGHNESS BY LEANING THE MIXTURE. THE HELICOPTER THEN BEGAN SHAKING FROM SIDE TO SIDE, INDICATING GROUND RESONANCE. DUE TO THE LOW ROTOR RPM, THE PILOT ELECTED TO CLOSE THE THROTTLE RATHER THAN LIFT THE HELICOPTER FROM THE GROUND. THE GROUND RESONANCE INCREASED AND THE PILOT COULD NOT CONTROL THE AIRCRAFT.

NTSB investigation

The NTSB’s investigation of this event, with its probable cause and findings. Matched to this report by N-number and date.

NTSB LAX04LA197Accident · No injuriesLimited investigationFinal reportVan Nuys, CAthe failure of maintenance personnel to ensure the proper charge of the aft landing gear dampers in accordance with the manufacturer's recommendations.Apr 27, 2004 · Substantial damage