# NTSB ANC82FA056: Bell 212, N59572, 38 Se Barrow, AK, July 11, 1982

- Type: NTSB accident investigation
- Classification: Accident · Minor injuries · Field investigation · Final report
- Date: July 10, 1982, 18:20 local (Jul 11, 1982, 02:20 UTC)
- Place: 38 Se Barrow, AK
- Coordinates: 71.279235, -156.780044 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=71.2792&lon=-156.7800&mi=10
- Phase of flight: [Enroute](https://openairdocs.org/ntsb-phases/400) (OpenAirDocs' grouping)
- Highest injury: Minor injuries
- Injuries: 3 minor, 3 uninjured
- Status: Completed, report July 10, 1983
- Report: Approved by Office Director
- NTSB office: Alaska Regional Office
- NTSB case key (mKey): 69650
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=ANC82FA056
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/69650/pdf
- Page: https://openairdocs.org/ntsb/ANC82FA056

## Sequence of events

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

- Airframe/component/system failure/malfunction, cruise - normal
  - rotor drive system,tail rotor drive shaft - overtemperature (cause)
  - rotor drive system,tail rotor drive shaft - failure,total (cause)
- Forced landing, landing - flare/touchdown
- Hard landing, landing - flare/touchdown
- Complete gear collapsed, landing - flare/touchdown
  - landing gear,skid assembly - overload
  - landing gear,skid assembly - failure,total

## Analysis

WHILE EXECUTING A PRECAUTIONARY LANDING AFTER HEARING A SCREECHING SOUND THE PLT LOST DIRECTIONAL CONTROL & THE HELICOPTER LANDED WHILE SPINNING. EXAMINATION REVEALED THAT THE PRIMARY TAIL ROTOR DRIVESHAFT QUILL COUPLING HAD FAILED. THE 204-040-604-5 FEMALE COUPLING HAD EXPERIENCED HIGH TEMPERATURES DURING OPERATION. CADIUM PLATING HAD BEGUN TO MELT ON EXTERIOR SURFACES. VISUAL OVERHEAT INDICATOR STRIPES REQUIRED BY THE COMPONENT REPAIR & OVERHAUL MANUAL WERE NOT PRESENT ON THE FEMALE COUPLING. THE 204-040-603-9 MALE COUPLING HAD EXTENSIVE HEAT & MECHANICAL DAMAGE.

## Aircraft

- Registration: N59572 (not matched to a registry record)
- Reported make and model: BELL 212
- Category: Helicopter
- Serial number: 30621
- Airframe hours: 3467
- Engines: P & W PT-6-T-3 900 horsepower turbo shaft
- Damage: Substantial damage
- Flight: Part 135
- Operator: Kenai Air Alaska Inc.
- Registered owner: Kenai Air Alaska Inc.
- Departed: REMOTE LOCATION
- Destination: REMOTE LOCATION
- Flight plan: Unknown

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 57; commercial, airline transport, flight instructor; airplane ratings: multi-engine land, single-engine land; instrument ratings: airplane, helicopter; medical: class 1, valid medical--w/ waivers/lim; flight hours: 20,356 total, 1,784 in this make and model, 16,856 as pilot in command, 96 in the last 90 days, 96 in the last 30 days, 7 in the last 24 hours

## Weather

- Conditions: Visual (VMC), Day
- Wind: 60° at 12 knots
- Visibility: 20 statute miles
- Lowest ceiling: 600 ft overcast
- Temperature: 93 °F
- Altimeter: 30.00 inHg

## 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 19820710029449A](https://openairdocs.org/incident/19820710029449A), Jul 10, 1982: Bell 212, Barrow, AK, Substantial damage. Noise in rear of helicopter. Elected to land. Lost rudder control. Hard landing. Tail rotor drive quill failed.

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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