# NTSB SEA89LA162: Cessna TU206G, N666HS, Moore, ID, September 4, 1989

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Limited investigation · Final report
- Date: September 4, 1989, 15:00 local (21:00 UTC)
- Place: Moore, ID
- Coordinates: 43.679313, -113.589958 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=43.6793&lon=-113.5900&mi=10
- Phase of flight: [Approach](https://openairdocs.org/ntsb-phases/500) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 2 uninjured
- Status: Completed, report June 30, 1992
- Report: Approved by Office Director
- NTSB case key (mKey): 41070
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=SEA89LA162
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/41070/pdf
- Page: https://openairdocs.org/ntsb/SEA89LA162

## Probable cause

FUEL EXHAUSTION DUE TO THE PILOT'S INACCURATE FUEL CONSUMPTION CALCULATIONS. CONTRIBUTING TO THE ACCIDENT WAS A FENCE.

## Sequence of events

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

- Loss of engine power(total) - mech failure/malf, approach
  - fluid,fuel - exhaustion
  - fuel consumption calculations - inaccurate, pilot in command (cause)
- Forced landing, descent - emergency
- In flight collision with object, landing
  - object - fence

## Analysis

AS THE AMPHIBIOUS AIRCRAFT WAS ON AN APPROACH TO LAND, ITS ENGINE LOST POWER. THE PILOT COULD NOT REACH THE AIRPORT AND THE AIRCRAFT HIT A FENCE DURING A FORCED LANDING. THE PILOT HAD CALCULATED HE HAD 52 MINUTES OF FUEL REMAINING, BUT THE FAA REPORTED THERE WAS NO FUEL LEFT IN THE AIRCRAFT.

## Aircraft

- Registration: N666HS (not matched to a registry record)
- Reported make and model: CESSNA TU206G
- Category: Airplane
- Serial number: U20606784
- Engines: CONTINENTAL TSIO-520M 310 horsepower reciprocating
- Damage: Substantial damage
- Flight: Personal, Part 91
- Operator: Douglas R. Tompkins
- Departed: GARDEN VALLEY, ID
- Destination: ARCO BUTTE, ID
- Airport: U57, Arco Butte

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 46; private; airplane ratings: single-engine land, single-engine sea; instrument ratings: airplane; medical: class 2, valid medical--no waivers/lim.; flight hours: 3,045 total, 2,400 in this make and model, 2,925 as pilot in command, 46 in the last 90 days, 26 in the last 30 days, 2 in the last 24 hours

## Weather

- Conditions: Visual (VMC), Day
- Visibility: 60 statute miles
- Lowest ceiling: none
- Temperature: 84 °F, dew point -0 °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 19890904033529A](https://openairdocs.org/incident/19890904033529A), Sep 4, 1989: Cessna TU206G, Arco, ID, Substantial damage. Ran out of fuel on approach to airport. Struck a fence and flipped over on forced landing.

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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