19891010039579A

Accident · Substantial damage

FAA accident report · Hiller UH-12E · Yuma, AZ · October 10, 1989

Date: October 10, 1989 · 19:27 local
Place: Yuma, AZ
Phase of flight: Pwr Off Vert Land/Autorotate
Operating rules: Agricultural (Part 137)
Operator: RQKG
Damage: Substantial damage
Aircraft: N689SB
NTSB investigation: NTSBLAX90DUJ03
Reported as: Hiller UH12E
Reported engine: Lycoming VO540*
Fatal injuries: 0
Pilot’s flight hours: 12,900 total3,900 in this make and model120 in the last 90 days

N689SBRegistration cancelled May 2, 2013 · Hiller UH-12ES/N 1475 Airframe modelHiller UH-12E Engine modelLycoming VO-540 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.

Torsional coupling failed during ag operation. Brief autorotation to impact.

As the FAA filed it

TORSIONAL COUPLING FAILED DURING AG OPERATION. BRIEF AUTOROTATION TO IMPACT.

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 LAX90DUJ03Accident · Serious injuriesFinal reportYuma, AZThe pilot misjudged the flare altitude. Contributing to this accident was the failure of the engine torsional coupling which ultimately caused the total loss of power.Oct 11, 1989 · Substantial damage