# NTSB ANC89LA154: de Havilland DHC-2, N64273, Iliamna, AK, September 1, 1989

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Limited investigation · Final report
- Date: August 31, 1989, 16:30 local (Sep 1, 1989, 00:30 UTC)
- Place: Iliamna, AK
- Coordinates: 59.849643, -154.559646 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=59.8496&lon=-154.5596&mi=10
- Phase of flight: [Takeoff](https://openairdocs.org/ntsb-phases/300) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 4 uninjured
- Status: Completed, report June 28, 1991
- Report: Approved by Office Director
- NTSB office: Alaska Regional Office
- NTSB case key (mKey): 5251
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=ANC89LA154
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/5251/pdf
- Page: https://openairdocs.org/ntsb/ANC89LA154

## Probable cause

THE PILOT'S SELECTION OF UNSUITABLE TERRAIN FOR AN OFF-AIRPORT OPERATION.  FACTORS RELATED TO THE ACCIDENT WERE: THE ADVERSE TERRAIN CONDITIONS.

## Sequence of events

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

- On ground/water encounter with terrain/water, takeoff - roll/run
  - unsuitable terrain or takeoff/landing/taxi area - selected, pilot in command (cause)
  - terrain condition - loose gravel/sandy (contributing factor)
  - terrain condition - soft (contributing factor)
  - terrain condition - ditch (contributing factor)
- Main gear collapsed, takeoff - aborted
  - landing gear,main gear - overload

## Analysis

THE PILOT STATED THAT HE ABORTED A TAKEOFF FROM A GRAVEL BAR AFTER THE AIRPLANE'S MAIN WHEELS HIT A SOFT SPOT. BEFORE THE AIRPLANE COULD BE STOPPED, IT HIT A DITCH.  SUBSEQUENTLY, THE LEFT MAIN  LANDING  GEAR  COLLAPSED & THE LEFT WING HIT THE GROUND.

## Aircraft

- Registration: [N64273](https://openairdocs.org/deregistered/N64273-1998-01-14), registration cancelled 1998-01-14, S/N 897 (OpenAirDocs)
- Reported make and model: de Havilland DHC-2
- Registry model: [Dehavilland BEAVER DHC-2 MK.1](https://openairdocs.org/model/dehavilland-beaver-dhc-2-mk-1) (registry code 2800102) (OpenAirDocs)
- Category: Airplane
- Serial number: 897
- Engines: P&W R-985-14B 350 horsepower reciprocating
- Damage: Substantial damage
- Flight: Business, Part 91
- Registered owner: Rainbow King Lodge, Inc.
- Destination: ILI, ILIAMNA, AK
- Flight plan: Company VFR

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 37; commercial, airline transport, flight instructor; airplane ratings: single-engine land, single-engine sea, multi-engine land; instrument ratings: airplane; medical: class 1, valid medical--no waivers/lim.; flight hours: 3,500 total, 150 in this make and model, 3,320 as pilot in command, 250 in the last 90 days, 125 in the last 30 days, 12 in the last 24 hours

## Weather

- Conditions: Visual (VMC), Day
- Wind: calm
- Visibility: 10 statute miles
- Lowest ceiling: 10,000 ft broken
- Temperature: -0 °F, dew point -0 °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 19890831035489A](https://openairdocs.org/incident/19890831035489A), Aug 31, 1989: Dhav DHC2MK1, Iliamna, AK, Substantial damage. Wheels hit a soft spot during takeoff from a gravel bar. Aborted but struck a ditch before stopping.

## Other investigations on N64273 (1)

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 ANC93FA161](https://openairdocs.org/ntsb/ANC93FA161), Aug 31, 1993: De Havilland DHC-2 (N64273), Iliamna, AK, destroyed, 3 fatal. Probable cause: THE PILOT'S FAILURE TO MAINTAIN AIRSPEED RESULTING IN AN INADVERTENT STALL. A FACTOR IN THE ACCIDENT WAS THE INADEQUATE RECURRENT TRAINING OF THE PILOT BY THE OPERATOR/MANAGEMENT.

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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