20090604018059A

Accident · Substantial damage

FAA accident report · Hughes OH-6A · Benson, AZ · June 4, 2009

Date: June 4, 2009 · 08:50 local
Place: Benson, AZ
Airport: Benson Municipal
Phase of flight: Landing
Operating rules: General operating rules (Part 91)
Damage: Substantial damage
Aircraft: N6641D
NTSB investigation: NTSBWPR09TA277
Reported as: Hughes OH6A
People aboard: 2
Fatal injuries: 0
Other injuries: 0
Pilot’s flight hours: 1,370 total0 in this make and model0 in the last 90 days

N6641DRegistration cancelled May 31, 2018 · Hughes OH-6AS/N 66-07855 Airframe modelHughes OH-6A

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) While practicing autorotation procedures, touched, down, aircraft jumped off runway, not enough RPM to maintain flight. Contracted ground second time and continued to move on ground rotating counter clockwise. Right side landing gear collapsed. Both pilots concluded that the throttle was not advanced fully as required.

As the FAA filed it

(-23) WHILE PRACTICING AUTOROTATION PROCEDURES, TOUCHED, DOWN, AIRCRAFT JUMPED OFF RUNWAY, NOT ENOUGH RPM TO MAINTAIN FLIGHT. CONTRACTED GROUND SECOND TIME AND CONTINUED TO MOVE ON GROUND ROTATING COUNTER CLOCKWISE. RIGHT SIDE LANDING GEAR COLLAPSED. BOTH PILOTS CONCLUDED THAT THE THROTTLE WAS NOT ADVANCED FULLY AS REQUIRED.

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 WPR09TA277Accident · No injuriesFinal reportBenson, AZThe pilot under instruction's inadequate autorotation technique and the instructor pilot’s delayed remedial action to arrest the rate of descent of the helicopter while in an autorotation flare.Jun 4, 2009 · Substantial damage