# NTSB SEA82DA085: Bell 206B, N1074Z, Swan Valley, ID, June 11, 1982

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Final report
- Date: June 11, 1982, 10:45 local (16:45 UTC)
- Place: Swan Valley, ID
- Coordinates: 43.399906, -111.309188 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=43.3999&lon=-111.3092&mi=10
- Phase of flight: [Maneuvering](https://openairdocs.org/ntsb-phases/450) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 1 uninjured
- Status: Completed, report June 11, 1983
- Report: Approved by Office Director
- NTSB case key (mKey): 72769
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=SEA82DA085
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/72769/pdf
- Page: https://openairdocs.org/ntsb/SEA82DA085

## Sequence of events

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

- Loss of engine power(total) - nonmechanical, hover
  - miscellaneous - undetermined (cause)
- Forced landing, landing - flare/touchdown
  - autorotation - performed, pilot in command
- Roll over, landing - flare/touchdown
  - weather condition - high density altitude (contributing factor)
  - terrain condition - mountainous/hilly (contributing factor)

## Analysis

THE AIRCRAFT CRASHED DURING AN EXTERNAL LOAD OPERATION AT AN ELEVATION OF ABOUT 6700 FT MSL IN MOUNTAINOUS TERRAIN. THE PILOT REPORTED THAT THE FUEL GAUGE INDICATED 8 GALLONS REMAINING WHEN HE LAST CHECKED IT BEFORE THE ACCIDENT. REPORTEDLY, HE CHECKED HIS INSTRUMENTS PRIOR TO LETTING A LOAD DOWN INTO TREES, AND HE HAD NO CAUTION OR WARNING LIGHTS. WHILE SETTING THE LOAD DOWN ON THE GROUND, HE HEARD THE TURBINE RPM DECAY. HE MOVED ABOUT 25 FT RIGHT AND 20 FT FORWARD TO CLEAR THE TREES. DURING THE LANDING, THE AIRCRAFT TOUCHED DOWN ON SLOPING TERRAIN AND ROLLED OVER. THERE WERE NO REPORTED MALFUNCTIONS OF THE AIRCRAFT ENGINE OR FUEL SYSTEM.

## Aircraft

- Registration: N1074Z (not matched to a registry record)
- Reported make and model: BELL 206B
- Category: Helicopter
- Serial number: 2891
- Airframe hours: 1798
- Engines: ALLISON 250-C-20B 420 horsepower turbo shaft
- Damage: Substantial damage
- Flight: Part 133
- Operator: Hoskings Exploration Heli
- Registered owner: Hoskings Exploration Heli
- Departed: SWAN VALLEY, ID
- Destination: SWAN VALLEY, ID

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 38; commercial; airplane ratings: single-engine land, multi-engine land; instrument ratings: airplane; medical: class 2, valid medical--no waivers/lim.; flight hours: 5,730 total, 1,250 in this make and model, 5,420 as pilot in command, 95 in the last 90 days, 4 in the last 24 hours

## Weather

- Conditions: Visual (VMC), Day
- Wind: 200° at 5 knots
- Visibility: 60 statute miles
- Temperature: 131 °F

## 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 19820611021619A](https://openairdocs.org/incident/19820611021619A), Jun 11, 1982: Bell 206B, Swan Valley, ID, Substantial damage. Engine quit during sling load operation. Pilot attempted autorotation landing in clearing on 15 degree slope.

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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