# Accident 19960923029669A: Kaman HH43BF, Troy, MT, September 23, 1996

- Type: FAA accident report (Accident/Incident Data System), as reported
- Date: September 23, 1996, 17:00 local time
- Place: Troy, MT
- Damage: Substantial damage
- Phase of flight: Pwr Off Vert Land/Autorotate
- Operating rules: General operating rules (Part 91)
- Operator: SXHL
- Location: 48.7194° N, 115.7405° W: From the FAA, an estimate near the named town, within about 3 miles
- Nearby events: https://openairdocs.org/map.md?lat=48.7194&lon=-115.7405&mi=10
- Aircraft: N4069R, registered now (https://openairdocs.org/aircraft/N4069R) (OpenAirDocs)
- Registry model: Kaman HH-43 B/F (registry code 4800705, https://openairdocs.org/model/kaman-hh-43-b-f) (OpenAirDocs)
- Registry engine: Honeywell T5309B (registry code 33912, https://openairdocs.org/engine/honeywell-t5309b) (OpenAirDocs)
- Reported make and model: KAMAN HH43BF
- Reported engine: LYC T53L13B
- People aboard: 4
- Fatal injuries: 0
- Pilot flight hours: 10,000 total, 3,500 in this make and model
- NTSB investigation: [NTSB SEA96LA219](https://openairdocs.org/ntsb/SEA96LA219) (OpenAirDocs)
- FAA source: FAA Aviation Safety Information Portal (https://asip.faa.gov/)
- Page: https://openairdocs.org/incident/19960923029669A

## Narrative

As the FAA filed it, in capitals; the FAA replaces private details with ^PRIVACY DATA OMITTED^.

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

## The NTSB's investigation of this event (1)

From the NTSB's public API. Aircraft are matched to registry aircraft by N-number and event date, checked against the reported serial number, make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model.

- [NTSB SEA96LA219](https://openairdocs.org/ntsb/SEA96LA219), Sep 23, 1996: Kaman HH-43 B/F (N4069R), Troy, MT, substantial damage. Probable cause: failure of the freewheeling sprag unit bearings for undetermined reasons.

From the FAA Accident/Incident Data System. Reports are matched to registry aircraft 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. For accidents, the NTSB's own investigation is the fuller record.

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