19850706033369A

Accident · Destroyed

FAA accident report · Hughes 369HS · Keystone, SD · July 6, 1985

Date
July 6, 1985 · 11:09 local
Place
Keystone, SD
Airport
Rushmore
Phase of flight
Pwr On Vertical Ldng/Rtrcrft
Operating rules
General operating rules (Part 91)
Damage
Destroyed
Aircraft
N5410W
NTSB investigation
NTSBDEN85FA180
Reported as
Hughes 369HS
Reported engine
Allison 250C18B
People aboard
4
Fatal injuries
4
Pilot’s flight hours
1,480 total501 in this make and model87 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.

The rotors separated from the helicopter. Straps failed from fatigue. Unapproved parts and improper maintenance.

As the FAA filed it

THE ROTORS SEPARATED FROM THE HELICOPTER. STRAPS FAILED FROM FATIGUE. UNAPPROVED PARTS AND IMPROPER MAINTENANCE.

NTSB investigation

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