# NTSB ANC84FA067: Bell 206B, N90191, Palmer, AK, May 13, 1984

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Field investigation · Final report
- Date: May 13, 1984, 13:00 local (21:00 UTC)
- Place: Palmer, AK
- Coordinates: 61.619316, -148.980407 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=61.6193&lon=-148.9804&mi=10
- Phase of flight: [Enroute](https://openairdocs.org/ntsb-phases/400) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 1 uninjured
- Status: Completed
- Report: Approved by Office Director
- NTSB office: Alaska Regional Office
- NTSB case key (mKey): 4203
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=ANC84FA067
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/4203/pdf
- Page: https://openairdocs.org/ntsb/ANC84FA067

## Sequence of events

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

- In flight collision with object, cruise - normal
  - object - wire,transmission
  - visual lookout - not maintained, pilot in command (cause)
  - proper altitude - not maintained, pilot in command (cause)

## Analysis

THE HELICOPTER WAS BEING USED TO RE-SUPPLY FIRE FIGHTERS BY THE DIVISION OF FORESTRY. EN ROUTE BACK TO THE STAGING AREA THE ACFT STRUCK UNMARKED LINES 85 FT ABOVE THE VALLEY FLOOR. POLES SUPPORTING THE LINES WERE OBSCURED BY VEGETATION AND WERE 224 FT APART. NUMEROUS TRIPS TO AND FROM THE STAGING AREA AT HIGHER ALTITUDES WERE FLOWN ON THE PREVIOUS DAY. THE PILOT NOR CREWS ON THE GROUND WERE AWARE OF THE POWER LINES.

## Aircraft

- Registration: N90191 (not matched to a registry record)
- Reported make and model: BELL 206B
- Category: Helicopter
- Serial number: 1687
- Airframe hours: 4101
- Engines: Detr. Diesel 250-C20 317 horsepower turbo shaft
- Damage: Substantial damage
- Flight: Public aircraft, Part 91
- Registered owner: Sea Airmotive, Inc.
- Airworthiness certificate: Standard, Normal
- Last inspection: 100 hour, September 9, 1983, 82 hours before
- Departed: PALMER, AK

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 35; commercial; airplane ratings: single-engine land, multi-engine land; instrument ratings: airplane; medical: class 1, valid medical--no waivers/lim.; seat: right; flight hours: 6,759 total, 2,885 in this make and model

## Weather

- Conditions: Visual (VMC), Day
- Wind: 60° at 10 knots
- Visibility: 90 statute miles
- Lowest ceiling: none
- Temperature: 61 °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 19840513066199A](https://openairdocs.org/incident/19840513066199A), May 13, 1984: Bell 206B, Palmer, AK, Substantial damage. Struck a hidden powerline while approaching a landing area.

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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