19910701025659A

Accident · Substantial damage

FAA accident report · Bell 412 · Grand Junction, CO · July 1, 1991

Date
July 1, 1991 · 15:00 local
Place
Grand Junction, CO
Phase of flight
Pwr Off Run Land (Autorotation
Operating rules
Air taxi and commuter (Part 135)
Operator
CKLA
Damage
Substantial damage
Aircraft
N20703
NTSB investigation
NTSBDEN91LA095
Reported as
Bell 412
Reported engine
Pratt & Whitney PT6T3B
People aboard
3
Fatal injuries
0
Pilot’s flight hours
4,010 total300 in this make and model40 in the last 90 days

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.

Tranmission main drive shaft disengaged and overheated. Collapsed skids on run on autorotation in soft ground.

As the FAA filed it

TRANMISSION MAIN DRIVE SHAFT DISENGAGED AND OVERHEATED. COLLAPSED SKIDS ON RUN ON AUTOROTATION IN SOFT GROUND.

NTSB investigation

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