19960923029669A

Accident · Substantial damage

FAA accident report · Kaman HH-43 B/F · Troy, MT · September 23, 1996

Date: September 23, 1996 · 17:00 local
Place: Troy, MT
Phase of flight: Pwr Off Vert Land/Autorotate
Operating rules: General operating rules (Part 91)
Operator: SXHL
Damage: Substantial damage
Aircraft: N4069R
NTSB investigation: NTSBSEA96LA219
Reported as: Kaman HH43BF
Reported engine: Lycoming T53L13B
People aboard: 4
Fatal injuries: 0
Pilot’s flight hours: 10,000 total3,500 in this make and model

N4069RRegistered now · Kaman HH-43 B/FS/N 64-17558 · Built 1964 Airframe modelKaman HH-43 B/F Engine modelHoneywell T5309BTurbo-shaft

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.

External load repositioning flight needles split. Lost altitude. Rotor decay. Impacted. Sprague clutch failed.

As the FAA filed it

EXTERNAL LOAD REPOSITIONING FLIGHT NEEDLES SPLIT. LOST ALTITUDE. ROTOR DECAY. IMPACTED. SPRAGUE CLUTCH FAILED.

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 SEA96LA219Accident · Minor injuriesLimited investigationFinal reportTroy, MTfailure of the freewheeling sprag unit bearings for undetermined reasons.Sep 23, 1996 · Substantial damage