# NTSB ANC83LA153: Cessna 172, N734QV, Anchorage, AK, August 25, 1983

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Limited investigation · Final report
- Date: August 24, 1983, 18:00 local (Aug 25, 1983, 02:00 UTC)
- Place: Anchorage, AK
- Coordinates: 61.219623, -149.850708 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=61.2196&lon=-149.8507&mi=10
- Phase of flight: [Landing](https://openairdocs.org/ntsb-phases/550) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 2 uninjured
- Status: Completed
- Report: Approved by Office Director
- NTSB office: Alaska Regional Office
- NTSB case key (mKey): 4158
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=ANC83LA153
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/4158/pdf
- Page: https://openairdocs.org/ntsb/ANC83LA153

## 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
  - planning/decision - improper, pilot in command (cause)
  - weather condition - crosswind (contributing factor)
  - weather condition - gusts (contributing factor)
  - compensation for wind conditions - not possible, pilot in command (contributing factor)
  - airport facilities,runway/landing area condition - loose gravel/sandy (contributing factor)
  - directional control - not possible, pilot in command (contributing factor)
  - ground loop/swerve - uncontrolled, pilot in command (contributing factor)
- Nose over, landing - roll

## Analysis

DURING ARRIVAL, THE PLT LANDED ON A GRAVEL STRIP WITH A LEFT X-WIND AT 10 GUSTING 20 KTS. REPORTEDLY, HE ENCOUNTERED A GUST OF WIND DURING THE LANDING & LOST CONTROL WHEN THE LEFT WHEEL WENT INTO SOFT GRAVEL ON THE BANK OF THE STRIP. SUBSEQUENTLY, THE ACFT WENT OVER ON ITS TOP.

## Aircraft

- Registration: [N734QV](https://openairdocs.org/aircraft/N734QV), registered now, S/N 17269039 (OpenAirDocs)
- Reported make and model: CESSNA 172
- Registry model: [Cessna 172N](https://openairdocs.org/model/cessna-172n) (registry code 2072434) (OpenAirDocs)
- Registry engine: [Lycoming 0-320 series](https://openairdocs.org/engine/lycoming-0-320-series) (registry code 41508, reciprocating) (OpenAirDocs)
- Category: Airplane
- Serial number: 17269089
- Airframe hours: 1299
- Engines: LYCOMING O-320-H2AD 145 horsepower reciprocating
- Damage: Substantial damage
- Flight: Personal, Part 91
- Registered owner: Orson Ray Stilson
- Airworthiness certificate: Standard, Normal
- Last inspection: Annual, May 10, 1983, 20 hours before
- Departed: TKA, TALACHULITNA, AK
- Airport: Lake Creek, runway 36, 1,200 × 40 ft, gravel

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 48; private; airplane ratings: single-engine land; medical: class 3, valid medical--no waivers/lim.; seat: left; flight hours: 148 total, 148 in this make and model, 117 as pilot in command, 26 in the last 90 days, 11 in the last 30 days, 2 in the last 24 hours

## Weather

- Conditions: Visual (VMC), Day
- Wind: 270° at 10 knots, gusting 20
- Visibility: 30 statute miles
- Lowest ceiling: none
- Temperature: 46 °F, dew point 27 °F
- Altimeter: 29.00 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 19830824052379A](https://openairdocs.org/incident/19830824052379A), Aug 24, 1983: Cessna 172N, Lake Creek, AK, Substantial damage. Pilot lost directional control during landing in gusty crosswind conditions. Aircraft 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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