# NTSB ANC88LA039: Cessna 207, N70364, Ruby, AK, March 11, 1988

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Limited investigation · Final report
- Date: March 11, 1988, 11:00 local (15:00 UTC)
- Place: Ruby, AK
- Coordinates: 65.030914, -154.910812 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=65.0309&lon=-154.9108&mi=10
- Phase of flight: [Maneuvering](https://openairdocs.org/ntsb-phases/450) (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): 4993
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=ANC88LA039
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/4993/pdf
- Page: https://openairdocs.org/ntsb/ANC88LA039

## Sequence of events

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

- Loss of engine power(partial) - mech failure/malf, maneuvering
  - throttle/power lever,linkage - separation (cause)
- Forced landing, descent - emergency
- In flight collision with terrain/water, landing
  - planned approach - poor, pilot in command (cause)
  - terrain condition - frozen (contributing factor)
  - terrain condition - rough/uneven (contributing factor)

## Analysis

THE AIRCRAFT WAS OVER THE AIRPORT AT 2,000 FEET MSL WHEN THE ENGINE QUIT. THE AIRCRAFT CRASHED ONE MILE NORTH OF THE AIRPORT. EXAMINATION OF THE AIRCRAFT ENGINE REVEALED A BROKEN THROTTLE CONTROL WHICH WOULD CAUSE THE ENGINE TO GO TO IDLE.

## Aircraft

- Registration: [N70364](https://openairdocs.org/deregistered/N70364-2015-05-11), registration cancelled 2015-05-11, S/N 20700550 (OpenAirDocs)
- Reported make and model: CESSNA 207
- Registry model: [Cessna 207A](https://openairdocs.org/model/cessna-207a) (registry code 2073604) (OpenAirDocs)
- Category: Airplane
- Serial number: 20700550
- Engines: CONTINENTAL IO-520 300 horsepower reciprocating
- Damage: Substantial damage
- Flight: Part 135
- Registered owner: Galena Air Service
- Airworthiness certificate: Standard, Normal
- Departed: GAL, GALENA, AK
- Flight plan: VFR
- Airport: RBY, Ruby

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 39; flight instructor, commercial; airplane ratings: single-engine land, single-engine sea, multi-engine land; instrument ratings: airplane; medical: class 1, valid medical--no waivers/lim.; seat: left; flight hours: 2,553 total, 383 in this make and model, 2,167 as pilot in command, 154 in the last 90 days, 75 in the last 30 days, 3 in the last 24 hours

## Weather

- Conditions: Visual (VMC), Day
- Wind: calm
- Visibility: 30 statute miles
- Lowest ceiling: none
- Temperature: 39 °F, dew point 30 °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 19880311016199A](https://openairdocs.org/incident/19880311016199A), Mar 11, 1988: Cessna 207A, Ruby, AK, Substantial damage. Engine went to idle while circling over airport. Crash landed short of runway. Throttle control had broken.

## Other investigations on N70364 (2)

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.

- [NTSB ANC93FA060](https://openairdocs.org/ntsb/ANC93FA060), May 6, 1993: Cessna 207 (N70364), Holy Cross, AK, destroyed. Probable cause: THE FAILURE OF THE PILOT IN COMMAND TO MAINTAIN THE PROPER ALTITUDE. THE TREES WERE A FACTOR IN THE ACCIDENT.
- [NTSB ANC92LA118](https://openairdocs.org/ntsb/ANC92LA118), Aug 4, 1992: Cessna 207A (N70364), Pilot Station, AK, substantial damage. Probable cause: THE TOTAL LOSS OF ENGINE POWER FOR UNDETERMINED CAUSES, AND THE UNSUITABLE TERRAIN.

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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