# NTSB ANC88LA030: Cessna 207, N9950M, Brevig Mission, AK, February 12, 1988

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Limited investigation · Final report
- Date: February 12, 1988, 16:00 local (20:00 UTC)
- Place: Brevig Mission, AK
- Coordinates: 65.340873, -166.509155 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=65.3409&lon=-166.5092&mi=10
- Phase of flight: [Taxi](https://openairdocs.org/ntsb-phases/250) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 1 uninjured
- Status: Completed, report March 30, 1989
- Report: Approved by Office Director
- NTSB office: Alaska Regional Office
- NTSB case key (mKey): 4985
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=ANC88LA030
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/4985/pdf
- Page: https://openairdocs.org/ntsb/ANC88LA030

## Sequence of events

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

- Loss of control - on ground/water, taxi - from landing
  - weather condition - high wind (cause)
  - weather condition - gusts (cause)
  - directional control - not maintained, pilot in command (contributing factor)
  - compensation for wind conditions - inadequate, pilot in command (contributing factor)
- Nose over, taxi - from landing

## Analysis

THE PILOT STATED THAT WHILE TAXIING ON THE RAMP PERPENDICULAR TO THE WIND DIRECTION, A STRONG WIND GUST LIFTED THE RIGHT WING AND TAIL OF THE AIRCRAFT. THE AIRCRAFT SLOWLY TURNED OVER ON ITS BACK.

## Aircraft

- Registration: N9950M (not matched to a registry record)
- Reported make and model: CESSNA 207
- Category: Airplane
- Serial number: 20700760
- Airframe hours: 4447
- Engines: CONTINENTAL IO-520F 300 horsepower reciprocating
- Damage: Substantial damage
- Flight: Part 135
- Operator: Cape Smythe Air Service, doing business as Cape Smythe Air Service
- Registered owner: Grant B Thompson
- Airworthiness certificate: Standard, Normal
- Last inspection: 100 hour, January 27, 1988, 34 hours before
- Departed: OME, NOME, AK
- Flight plan: VFR
- Airport: KTS, Brevig Mission, runway 4, 2,400 × 50 ft, gravel

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 30; airline transport; airplane ratings: single-engine land, multi-engine land; instrument ratings: airplane; medical: class 1, valid medical--no waivers/lim.; seat: left; flight hours: 4,330 total, 1,653 in this make and model, 4,160 as pilot in command, 300 in the last 90 days, 170 in the last 30 days, 3 in the last 24 hours

## Weather

- Conditions: Visual (VMC), Day
- Wind: 60° at 25 knots, gusting 40
- Visibility: 15 statute miles
- Lowest ceiling: 3,000 ft overcast
- Temperature: 16 °F, dew point 3 °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 19880212002519A](https://openairdocs.org/incident/19880212002519A), Feb 12, 1988: Cessna 207, Brevig Mission, AK, Substantial damage. While taxiing on the ramp a strong crosswind gust blew the aircraft over on its back.

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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