# NTSB ANC91LA138: De Havilland DHC-2, N2738G, Cube Cove, AK, August 31, 1991

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Limited investigation · Final report
- Date: August 30, 1991, 16:20 local (Aug 31, 1991, 00:20 UTC)
- Place: Cube Cove, AK
- Coordinates: 58.580917, -134.769241 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=58.5809&lon=-134.7692&mi=10
- Phase of flight: [Landing](https://openairdocs.org/ntsb-phases/550) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 1 uninjured
- Status: Completed, report March 24, 1993
- Report: Approved by Office Director
- NTSB office: Alaska Regional Office
- NTSB case key (mKey): 5613
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=ANC91LA138
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/5613/pdf
- Page: https://openairdocs.org/ntsb/ANC91LA138

## Probable cause

THE ENCOUNTER WITH WINDSHEAR.

## Sequence of events

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

- Hard landing, landing - flare/touchdown
  - weather condition - windshear, pilot in command (cause)

## Analysis

WHILE ON FINAL APPROACH TO THE AIRSTRIP, THE AIRPLANE ENCOUNTERED A WINDSHEAR AND AN EXTREMELY HIGH SINK RATE.  AFTER A HARD LANDING ON THE AIRSTRIP, THE AIRPLANE WAS SUBSTANTIALLY DAMAGED.

## Aircraft

- Registration: N2738G (not matched to a registry record)
- Reported make and model: DE HAVILLAND DHC-2
- Category: Airplane
- Serial number: 1511
- Airframe hours: 5421
- Engines: P&W R-985-AN-14B 450 horsepower reciprocating
- Damage: Substantial damage
- Flight: Business, Part 91
- Airworthiness certificate: Standard, Normal
- Last inspection: 100 hour, August 1, 1991, 45 hours before
- Departed: JNU, JUNEAU, AK
- Flight plan: Company VFR
- Airport: CUW, Cube Cove, runway 18, 1,600 × 60 ft, gravel

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 41; commercial; airplane ratings: single-engine sea, single-engine land; instrument ratings: airplane; medical: class 2, valid medical--no waivers/lim.; seat: left; flight hours: 7,870 total, 1,085 in this make and model, 7,710 as pilot in command, 152 in the last 90 days, 70 in the last 30 days, 3 in the last 24 hours

## Weather

- Conditions: Visual (VMC), Day
- Wind: 180° at 10 knots
- Visibility: 10 statute miles
- Lowest ceiling: none
- Temperature: 55 °F, dew point 46 °F
- Altimeter: 30.00 inHg

## 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 19910830040719A](https://openairdocs.org/incident/19910830040719A), Aug 30, 1991: Dhav DHC2*, Cube Cove, AK, Substantial damage. Turbulence and windshear on landing high sink rate unchecked by takeoff power. Impact on runway wrinkled skin.

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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