# NTSB ATL83LA355: Hiller UH-12E, N4029R, Cameron, SC, September 5, 1983

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Limited investigation · Final report
- Date: September 5, 1983, 07:30 local (11:30 UTC)
- Place: Cameron, SC
- Coordinates: 33.549983, -80.709861 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=33.5500&lon=-80.7099&mi=10
- Phase of flight: [Maneuvering](https://openairdocs.org/ntsb-phases/450) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 1 uninjured
- Status: Completed
- Report: Approved by Office Director
- NTSB case key (mKey): 6193
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=ATL83LA355
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/6193/pdf
- Page: https://openairdocs.org/ntsb/ATL83LA355

## Sequence of events

In NTSB's coding before 2008 (https://www.ntsb.gov/GILS/Documents/codman.pdf).

- Airframe/component/system failure/malfunction, maneuvering - aerial application
  - rotor drive system,engine to transmission drive - failure,total (cause)
- Loss of control - in flight, maneuvering - aerial application
  - directional control - not possible, pilot in command
  - autorotation - not possible, pilot in command
- In flight collision with terrain/water, landing

## Analysis

THE PLT STATED THAT HE WAS ON A TRIMMING/SWATH RUN AT ABOUT 15 FT AGL & 15 MPH WHEN HE HEARD A STRANGE NOISE WHICH WAS FOLLOWED BY A 180 DEG YAW. SUBSEQUENTLY, THE HELICOPTER CRASH LANDED, DAMAGING THE TAIL BOOM & TAIL ROTOR BLADES AND SPREADING THE LANDING GEAR. AN EXAM REVEALED THAT THE ENG DRIVE TORSION COUPLING, PN 21046-5, HAD FAILED AT THE INTERLOCKING STEEL & RUBBER ASSEMBLY.

## Aircraft

- Registration: [N4029R](https://openairdocs.org/deregistered/N4029R-2008-03-10), registration cancelled 2008-03-10, S/N 5103, built 1980 (OpenAirDocs)
- Reported make and model: HILLER UH-12E
- Registry model: [Hiller UH-12E](https://openairdocs.org/model/hiller-uh-12e) (registry code 4360122) (OpenAirDocs)
- Registry engine: [Lycoming VO-540 series](https://openairdocs.org/engine/lycoming-vo-540-series) (registry code 41534, reciprocating) (OpenAirDocs)
- Category: Helicopter
- Serial number: 5103
- Airframe hours: 1222
- Engines: LYCOMING VO-540-C2A 305 horsepower reciprocating
- Damage: Substantial damage
- Flight: Aerial application, Part 137
- Registered owner: Walter M. Moore
- Airworthiness certificate: Standard, Normal
- Last inspection: Annual, August 1, 1983, 40 hours before
- Departed: CAMERON, SC

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 41; flight instructor, commercial; airplane ratings: single-engine land; medical: class 2, valid medical--no waivers/lim.; seat: front; flight hours: 8,800 total, 150 in the last 90 days, 10 in the last 24 hours

## Weather

- Conditions: Visual (VMC), Day
- Wind: 190° at 6 knots
- Visibility: 15 statute miles
- Lowest ceiling: none
- Temperature: 90 °F, dew point 72 °F
- Altimeter: 29.00 inHg
- Observed at: CAE

## FAA reports on this event (1)

The FAA's own accident and incident reports, matched to the aircraft by N-number and date (OpenAirDocs).

- [Accident 19830905049149A](https://openairdocs.org/incident/19830905049149A), Sep 5, 1983: Hiller UH12E, Cameron, SC, Substantial damage. Engine drive torsion coupling failed. Made hard landing. Had 40 hours on unit since installed. Old rubber cure date

## Other investigations on N4029R (3)

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 MIA88LA183](https://openairdocs.org/ntsb/MIA88LA183), Jun 1, 1988: Hiller UH-12E (N4029R), Gretna, FL, substantial damage
- [NTSB MIA88LA014](https://openairdocs.org/ntsb/MIA88LA014), Oct 6, 1987: Hiller UH-12E (N4029R), Union Church, MS, substantial damage
- [NTSB ATL82DA073](https://openairdocs.org/ntsb/ATL82DA073), Mar 17, 1982: Hiller UH12E (N4029R), Lydia, SC, substantial damage

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.

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