# NTSB SEA91LA193: Beech N35, N9425Y, Hillsboro, OR, July 27, 1991

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Limited investigation · Final report
- Date: July 27, 1991, 15:10 local (22:10 UTC)
- Place: Hillsboro, OR
- Coordinates: 45.580234, -122.91024 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=45.5802&lon=-122.9102&mi=10
- Phase of flight: [Enroute](https://openairdocs.org/ntsb-phases/400) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 3 uninjured
- Status: Completed, report March 31, 1993
- Report: Approved by Office Director
- NTSB case key (mKey): 41499
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=SEA91LA193
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/41499/pdf
- Page: https://openairdocs.org/ntsb/SEA91LA193

## Probable cause

FUEL STARVATION DUE TO THE IMPROPER USE OF THE FUEL SELECTOR SWITCH BY THE PILOT AND HIS FAILURE TO EXTEND THE LANDING GEAR FOR THE FORCED LANDING.

## Sequence of events

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

- Loss of engine power(total) - nonmechanical, cruise - normal
  - fluid,fuel - starvation (cause)
  - fuel tank selector position - improper use of, pilot in command (cause)
- In flight collision with terrain/water, descent - emergency
- Gear not extended, landing - flare/touchdown
  - gear extension - not performed, pilot in command (cause)

## Analysis

THE ACFT ENG QUIT IN CRUISE FLT AT 1500 AGL AND THE PILOT MADE A FORCED LANDING IN AN OPEN FIELD WITH THE LANDING GEAR RETRACTED.  EXAM OF ACFT REVEALED THE FUEL SELECTOR ON THE EMPTY LEFT TANK, AND THE RT TANK HAD 20 GAL FUEL.  ENG RAN OK AFTER THE ACCIDENT.

## Aircraft

- Registration: N9425Y (not matched to a registry record)
- Reported make and model: BEECH N35
- Category: Airplane
- Serial number: D-6604
- Engines: CONTINENTAL IO-470-N 260 horsepower reciprocating
- Damage: Substantial damage
- Flight: Personal, Part 91
- Operator: Lynn K. Ankrum
- Registered owner: Lynn K. Ankrum
- Airworthiness certificate: Standard, Normal
- Departed: AST, ASTORIA, OR
- Destination: SLE, SALEM, OR

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 53; commercial; airplane ratings: single-engine land, multi-engine land; instrument ratings: airplane; medical: class 2, valid medical--w/ waivers/lim; flight hours: 1,605 total, 650 in this make and model, 1,500 as pilot in command, 50 in the last 90 days, 10 in the last 30 days, 2 in the last 24 hours

## Weather

- Conditions: Visual (VMC), Day
- Wind: 340° at 7 knots
- Visibility: 60 statute miles
- Lowest ceiling: none
- Temperature: 84 °F, dew point 57 °F
- Altimeter: 30.00 inHg
- Observed at: HIO, 3 nm away

## 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 19910727030239A](https://openairdocs.org/incident/19910727030239A), Jul 27, 1991: Beech N35, Hillsboro, OR, Substantial damage. Engine quit en route. Landed gear up in open field. Fuel selector on empty tank. Other tank full.

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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