# NTSB ANC90LA022: de Havilland DHC-2, N67691, Kodiak, AK, December 28, 1989

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Limited investigation · Final report
- Date: December 28, 1989, 14:00 local (18:00 UTC)
- Place: Kodiak, AK
- Coordinates: 57.79063, -152.39949 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=57.7906&lon=-152.3995&mi=10
- Phase of flight: [Initial climb](https://openairdocs.org/ntsb-phases/350) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 1 uninjured
- Status: Completed, report September 5, 1990
- Report: Approved by Office Director
- NTSB office: Alaska Regional Office
- NTSB case key (mKey): 5330
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=ANC90LA022
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/5330/pdf
- Page: https://openairdocs.org/ntsb/ANC90LA022

## Probable cause

IMPROPER COMPENSATION FOR WIND CONDITIONS BY THE PILOT, WHICH RESULTED IN LOSS OF AIRCRAFT CONTROL DURING TAKEOFF, AND SUBSEQUENT IMPACT WITH THE WATER.  THE WEATHER CONDITIONS WERE CONTRIBUTING FACTORS.

## Sequence of events

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

- Loss of control - in flight, takeoff - initial climb
  - weather condition - high wind (contributing factor)
  - weather condition - gusts (contributing factor)
  - weather condition - turbulence (contributing factor)
  - compensation for wind conditions - inadequate, pilot in command (cause)
  - aircraft control - not maintained, pilot in command (cause)
- In flight collision with terrain/water, takeoff
  - terrain condition - water
  - landing gear,float assembly - overload

## Analysis

THE PLT PRPTD THAT AFTER MAKING A SEA LANDING NEAR RASPBERRY STRAIT, THE WIND VELOCITY INCREASED TO AN ESTIMATED 30 KTS WITH GUSTS TO 45 KTS. HE ELECTED TO TAKE OFF TOWARD THE WEST FOR THE RETURN FLT. HE SAID THAT AT ABOUT 100 FT ABOVE THE WATER, THE ACFT ROLLED ABRUPTLY TO THE RIGHT & ITS NOSE PITCHED DOWNWARD. HE CORRECTED WITH FULL POWER & OPPOSITE AILERON, BUT THE ACFT CONTACTED THE WATER BEFORE HE COULD RECOVER. DRG IMPACT, THE 2 FRONT COMPARTMENTS OF THE RIGHT FLOAT RUPTURED & THE RIGHT FLOAT STRUT FAILED. SUBSEQUENTLY, THE RIGHT FLOAT SANK & THE ACFT ROLLED OVER IN THE WATER.

## Aircraft

- Registration: [N67691](https://openairdocs.org/aircraft/N67691), registered now, S/N 540 (OpenAirDocs)
- Reported make and model: de Havilland DHC-2
- Registry model: [Dehavilland DHC-2 MK. I(L20A)](https://openairdocs.org/model/dehavilland-dhc-2-mk-i-l20a) (registry code 2808002) (OpenAirDocs)
- Registry engine: [Pratt & Whitney R-985 series](https://openairdocs.org/engine/pratt-whitney-r-985-series) (registry code 52008, reciprocating) (OpenAirDocs)
- Category: Airplane
- Serial number: 540
- Engines: P&W R-985 450 horsepower reciprocating
- Damage: Substantial damage
- Flight: Personal, Part 91
- Registered owner: Uyak Air Service
- Departed: ADQ
- Flight plan: Company VFR

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 37; commercial; airplane ratings: single-engine land, single-engine sea, multi-engine land; instrument ratings: airplane; medical: class 2, valid medical--w/ waivers/lim; flight hours: 5,800 total, 1,800 in this make and model, 5,800 as pilot in command, 105 in the last 90 days, 35 in the last 30 days, 2 in the last 24 hours

## Weather

- Conditions: Visual (VMC), Day
- Wind: 280° at 30 knots, gusting 45
- Visibility: 75 statute miles
- Lowest ceiling: none
- 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 19891228053599A](https://openairdocs.org/incident/19891228053599A), Dec 28, 1989: Dhav DHC2MK1, Kodiak, AK, Substantial damage. Lost control due to possible windshear shortly after liftoff from rough ocean water in high winds. Flipped inverted

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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