# NTSB SEA82FA163: de Havilland DHC-II, N5157G, Mahoney Creek, ID, September 14, 1982

- Type: NTSB accident investigation
- Classification: Accident · Fatal · Field investigation · Final report
- Date: September 14, 1982, 12:00 local (18:00 UTC)
- Place: Mahoney Creek, ID
- Coordinates: 45.000499, -113.859474 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=45.0005&lon=-113.8595&mi=10
- Phase of flight: [Approach](https://openairdocs.org/ntsb-phases/500) (OpenAirDocs' grouping)
- Highest injury: Fatal
- Injuries: 2 fatal
- Status: Completed, report September 14, 1983
- Report: Approved by Office Director
- NTSB case key (mKey): 71545
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=SEA82FA163
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/71545/pdf
- Page: https://openairdocs.org/ntsb/SEA82FA163

## Sequence of events

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

- Loss of control - in flight, approach - vfr pattern - base turn
  - aircraft handling - uncontrolled, pilot in command (cause)
  - incapacitation(other cardiovascular), pilot in command (cause)
- In flight collision with terrain/water, approach - vfr pattern - base turn

## Analysis

THE ACFT WAS OBSERVED FLYING OVER THE STRIP IN WHAT APPEARED TO BE A NORMAL DOWNWIND PATTERN. IT CRASHED ABOUT 300 FT BELOW WINDY RIDGE ON THE NORTHWEST FACE. THE AUTOPSY REPORT INDICATED THE PLT HAD A "PATCHY HEALED MYOCARDIAL INFARCT" PRIOR TO THE ACCIDENT. MICROSCOPIC EXAMINATION SUPPORTED OCCLUSIVE CORONARY ARTERIOSCLEROSIS, LEFT CORONARY ARTERY. THE PLT HAD BEEN UNDER A STRESS PROGRAM & TAKING MEDICATION FOR HIGH BLOOD PRESSURE.

## Aircraft

- Registration: [N5157G](https://openairdocs.org/deregistered/N5157G-1983-04-01), registration cancelled 1983-04-01, S/N 270 (OpenAirDocs)
- Reported make and model: de Havilland DHC-II
- Registry model: [Dehavilland BEAVER U-6A](https://openairdocs.org/model/dehavilland-beaver-u-6a) (registry code 2800105) (OpenAirDocs)
- Category: Airplane
- Serial number: 27
- Airframe hours: 876
- Engines: P &  W R-985-39A 400 horsepower reciprocating
- Damage: Destroyed
- Fire: On-Ground
- Flight: Part 135
- Operator: James F. Searles
- Registered owner: James F. Searles
- Departed: C, CHALLIS, ID
- Destination: C, MAHONEY CREEK, ID
- Airport: 43, Mahoney Creek Usfs, runway 21, 2,050 × 40 ft, dirt

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 55; commercial; airplane ratings: single-engine land, multi-engine land; instrument ratings: airplane; medical: class 2, valid medical--w/ waivers/lim; flight hours: 6,000 total, 60 in this make and model

## Weather

- Conditions: Visual (VMC), Day
- Wind: variable at 10 knots
- Visibility: 25 statute miles
- Temperature: 41 °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 19820914046539A](https://openairdocs.org/incident/19820914046539A), Sep 14, 1982: Dhav DHC2*, Mahoney Creek, ID, Destroyed, 1 fatal. Flew into side of a ridge on approach to forest strip in hilly terrain. Pilot had severe coronary disease.

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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