# NTSB ANC90LA133: Cessna 207, N40CF, Tetlin, AK, August 6, 1990

- Type: NTSB accident investigation
- Classification: Accident · Serious injuries · Limited investigation · Final report
- Date: August 5, 1990, 17:20 local (Aug 6, 1990, 01:20 UTC)
- Place: Tetlin, AK
- Location: 63.1351° N, 142.5239° W: Placed by OpenAirDocs: center of Tetlin, AK, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=63.1351&lon=-142.5239&mi=10
- Phase of flight: [Landing](https://openairdocs.org/ntsb-phases/550) (OpenAirDocs' grouping)
- Highest injury: Serious injuries
- Injuries: 2 serious, 3 minor
- Status: Completed, report December 30, 1992
- Report: Approved by Office Director
- NTSB office: Alaska Regional Office
- NTSB case key (mKey): 5419
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=ANC90LA133
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/5419/pdf
- Page: https://openairdocs.org/ntsb/ANC90LA133

## Probable cause

THE PILOT'S FAILURE TO MOUNTAIN DIRECTIONAL CONTROL DURING THE LANDING ROLL.

## 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
  - directional control - not maintained, pilot in command
- On ground/water encounter with terrain/water, landing - roll

## Analysis

THE PILOT STATED THAT THE AIRPLANE BOUNCED SLIGHTLY UPON INITIAL TOUCHDOWN. AFTER THE SECOND TOUCHDOWN, THE PILOT RISES THE FLAPS AND THE AIRPLANE EXITED OFF THE LEFT SIDE OF THE RUNWAY. THE AIRPLANE SUBSEQUENTLY CROSSED THE RUNWAY NEAR ITS END, WENT OVER A ROADWAY, AND FLIPPED OVER.

## Aircraft

- Registration: N40CF (not matched to a registry record)
- Reported make and model: CESSNA 207
- Category: Airplane
- Serial number: 20700234
- Airframe hours: 9464
- Engines: CONTINENTAL IO-520 300 horsepower reciprocating
- Damage: Substantial damage
- Flight: Part 135
- Registered owner: Veterans Air Service
- Airworthiness certificate: Standard, Normal
- Last inspection: 100 hour, July 16, 1990, 80 hours before
- Departed: ORT, TOK, AK
- Flight plan: VFR
- Airport: STE, Tetlin, runway 32, 1,700 × 25 ft, grass/turf

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 60; commercial; airplane ratings: single-engine land, single-engine sea, multi-engine land; instrument ratings: airplane; medical: class 2, valid medical--no waivers/lim.; seat: left; toxicology performed; flight hours: 5,498 total, 81 in this make and model, 5,301 as pilot in command, 20 in the last 90 days, 20 in the last 30 days, 1 in the last 24 hours

## Weather

- Conditions: Visual (VMC), Day
- Wind: 90° at 5 knots
- Visibility: 20 statute miles
- Lowest ceiling: none
- Temperature: 70 °F, dew point 52 °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 19900805033789A](https://openairdocs.org/incident/19900805033789A), Aug 5, 1990: Cessna 207, Stevens Point, WI, Substantial damage. Bounced on landing,lost control,left runway. Used power to regain runway,went across other side and flipped over.

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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