# NTSB ANC87LA120: de Havilland DHC-2, N31522, Chackachatna Ri, AK, August 9, 1987

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Limited investigation · Final report
- Date: August 9, 1987, 09:30 local (17:30 UTC)
- Place: Chackachatna Ri, AK
- Phase of flight: [Landing](https://openairdocs.org/ntsb-phases/550) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 2 uninjured
- Status: Completed, report July 5, 1988
- Report: Approved by Office Director
- NTSB office: Alaska Regional Office
- NTSB case key (mKey): 4887
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=ANC87LA120
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/4887/pdf
- Page: https://openairdocs.org/ntsb/ANC87LA120

## Sequence of events

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

- Loss of control - on ground/water, landing - roll
  - terrain condition - hidden obstruction(s) (contributing factor)
  - terrain condition - loose gravel/sandy (contributing factor)
  - directional control - not maintained, pilot in command (cause)
  - unsuitable terrain or takeoff/landing/taxi area - selected, pilot in command (cause)
- Nose down, landing - roll

## Analysis

THE PILOT STATED AFTER HE TOUCHED DOWN ON THE GRAVEL BAR HE LOST DIRECTIONAL CONTROL OF THE AIRCRAFT CAUSING THE AIRCRAFT TO STRIKE A LOG.  THE AIRPLANE THEN WENT UP ON ITS NOSE.

## Aircraft

- Registration: [N31522](https://openairdocs.org/aircraft/N31522), registered now, S/N 535, built 1952 (OpenAirDocs)
- Reported make and model: de Havilland DHC-2
- Registry model: [Dehavilland BEAVER U-6A](https://openairdocs.org/model/dehavilland-beaver-u-6a) (registry code 2800105) (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: 535
- Airframe hours: 10000
- Engines: P&W R-985-39B 450 horsepower reciprocating
- Damage: Substantial damage
- Flight: Instructional, Part 91
- Operator: Kenai Squadron, doing business as Civil Air Patrol
- Registered owner: Civil Air Patrol
- Airworthiness certificate: Standard, Normal
- Last inspection: 100 hour, July 10, 1987, 22 hours before
- Departed: ENA, KENAI, AK

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 24; 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.; seat: right; flight hours: 5,300 total, 1,040 in this make and model, 4,970 as pilot in command, 295 in the last 90 days, 120 in the last 30 days, 2 in the last 24 hours

## Weather

- Conditions: Visual (VMC), Day
- Wind: calm
- Visibility: 90 statute miles
- Lowest ceiling: none
- Temperature: 55 °F, dew point 39 °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 19870809043099A](https://openairdocs.org/incident/19870809043099A), Aug 9, 1987: Dhav DHC2*, Chackachatna Ri, AK, Substantial damage. The aircraft veered off the runway on landing and hit a log. The PIC was in a seat without a operable set of brakes.

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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