# Accident 19931229047439A: Kaman HH43BF, Mobile, AL, December 29, 1993

- Type: FAA accident report (Accident/Incident Data System), as reported
- Date: December 29, 1993, 16:55 local time
- Place: Mobile, AL
- Damage: Substantial damage
- Phase of flight: Fcd/Prec Ldg From Cruise
- Operating rules: Rotorcraft external load (Part 133)
- Operator: SQRL
- Location: 31.0892° N, 88.0109° W: From the FAA, an estimate near the named town, within about 3 miles
- Nearby events: https://openairdocs.org/map.md?lat=31.0892&lon=-88.0109&mi=10
- Aircraft: N5197W, a cancelled registration (https://openairdocs.org/deregistered/N5197W-2018-02-08) (OpenAirDocs)
- Registry model: Kaman HH-43 B/F (registry code 4800705, https://openairdocs.org/model/kaman-hh-43-b-f) (OpenAirDocs)
- Registry engine: Lycoming T-53 series (registry code 41549, https://openairdocs.org/engine/lycoming-t-53-series) (OpenAirDocs)
- Reported make and model: KAMAN HH43BF
- Reported engine: LYC T53L13B
- People aboard: 1
- Fatal injuries: 0
- Pilot flight hours: 8,700 total, 700 in this make and model
- NTSB investigation: [NTSB ATL94LA035](https://openairdocs.org/ntsb/ATL94LA035) (OpenAirDocs)
- FAA source: FAA Aviation Safety Information Portal (https://asip.faa.gov/)
- Page: https://openairdocs.org/incident/19931229047439A

## Narrative

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

PARTIAL LOSS ROTOR CONTROL. DROPPED LOGS. AUTOROTATED TO HARD LANDING. COTTER PIN TEETER PIN RETENTION NUT ABSENT.

## 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 ATL94LA035](https://openairdocs.org/ntsb/ATL94LA035), Dec 29, 1993: Kaman HH-43B/F (N5197W), Mobile, AL, substantial damage. Probable cause: AN INADEQUATE MAJOR REPAIR BY COMPANY MAINTENANCE PERSONNEL WHO FAILED TO INSTALL THE COTTER PIN WHICH SECURED THE RETAINING NUT OF THE RIGHT MAIN ROTOR HUB TEETER PIN.

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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