19890731026159A

Accident · Substantial damage

FAA accident report · Bell 206B · Rialto, CA · July 31, 1989

Date
July 31, 1989 · 13:35 local
Place
Rialto, CA
Airport
Rialto Municipal/Miro Field Airport
Phase of flight
Autorot Descent (Rotorcraft)
Operating rules
General operating rules (Part 91)
Damage
Substantial damage
Aircraft
N10857
NTSB investigation
NTSBLAX89LA253
Reported as
Bell 206B
Reported engine
Allison 250C20B
People aboard
2
Fatal injuries
0
Pilot’s flight hours
5,600 total1,400 in this make and model80 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.

Driveshaft coupling separated from transmission on flair to hover autorotation. Coupling was improperly secured.

As the FAA filed it

DRIVESHAFT COUPLING SEPARATED FROM TRANSMISSION ON FLAIR TO HOVER AUTOROTATION. COUPLING WAS IMPROPERLY SECURED.

NTSB investigation

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