19831221062989A

Accident · Substantial damage

FAA accident report · Bell 47G · El Cajon, CA · December 21, 1983

Date
December 21, 1983 · 13:25 local
Place
El Cajon, CA
Airport
Gillespie
Phase of flight
Sfl Autorotation
Operating rules
General operating rules (Part 91)
Damage
Substantial damage
Aircraft
N4475
NTSB investigation
NTSBLAX84LA108
Reported as
Bell 47G
Reported engine
Franklin 6V4200C32
Fatal injuries
0
Pilot’s flight hours
2,811 total411 in this make and model200 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.

Instructor incorrectly used forward cyclic on practice hover autorotation. Helicopter entered dynamic roll condition

As the FAA filed it

INSTRUCTOR INCORRECTLY USED FORWARD CYCLIC ON PRACTICE HOVER AUTOROTATION.HELICOPTER ENTERED DYNAMIC ROLL CONDITION

NTSB investigation

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

Other reports on N4475 · 1

Matched to the same aircraft by N-number and date.