# NTSB SEA91LA067: Clyde L. King Osprey II, N69CK, Aurora, OR, March 16, 1991

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Limited investigation · Final report
- Date: March 16, 1991, 09:45 local (17:45 UTC)
- Place: Aurora, OR
- Coordinates: 45.229038, -122.799728 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=45.2290&lon=-122.7997&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 24, 1993
- Report: Approved by Office Director
- NTSB case key (mKey): 41400
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=SEA91LA067
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/41400/pdf
- Page: https://openairdocs.org/ntsb/SEA91LA067

## Probable cause

A LOSS OF ENGINE POWER DUE TO FUEL STARVATION BECAUSE OF AN INADEQUATE COMPONENT AND INADEQUATE FUEL SYSTEM DESIGN.

## 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
  - fuel system,electric boost pump - pressure too low (cause)
  - acft/equip,inadequate aircraft component, manufacturer (cause)
  - acft/equip,inadequate design, manufacturer (cause)
- Forced landing, descent - emergency
- In flight collision with object, landing
  - object - tree(s)
  - unsuitable terrain or takeoff/landing/taxi area - selected, pilot in command (contributing factor)

## Analysis

THE PILOT OF THE AMATEUR-BUILT OSPREY II AMPHIBIAN COLLIDED WITH TREES AFTER THE AIRCRAFT SUSTAINED A POWER LOSS.  THE ELECTRIC AUTOMOTIVE-TYPE BOOST PUMP WAS KNOWN TO SUSTAIN A PRESSURE DROP FROM 6 PSI TO .5 PSI AFTER THREE MINUTES OF OPERATION.  THAT PUMP WAS USED TO PUMP FUEL FROM THE FUSELAGE TANKS TO THE PEDESTAL-MOUNTED ENGINE.

## Aircraft

- Registration: [N69CK](https://openairdocs.org/deregistered/N69CK-1996-07-25), registration cancelled 1996-07-25, S/N 1169 (OpenAirDocs)
- Reported make and model: CLYDE L. KING OSPREY II
- Registry model: [King Clyde L OSPREY II](https://openairdocs.org/model/king-clyde-l-osprey-ii) (registry code 957052V) (OpenAirDocs)
- Category: Airplane, amateur-built
- Serial number: 1169
- Engines: LYCOMING O-320-E2D 150 horsepower reciprocating
- Damage: Substantial damage
- Flight: Personal, Part 91
- Operator: Clyde L. King
- Registered owner: Clyde L. King
- Airport: 3S2, Aurora State, runway 17, 4,104 × 100 ft, asphalt

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 57; private; airplane ratings: single-engine land; medical: class 3, valid medical--w/ waivers/lim; flight hours: 158 total, 19 in this make and model, 61 as pilot in command, 3 in the last 90 days, 2 in the last 30 days, 1 in the last 24 hours

## Weather

- Conditions: Visual (VMC), Day
- Wind: 360° at 4 knots
- Visibility: 15 statute miles
- Lowest ceiling: none
- Temperature: -0 °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 19910316005469A](https://openairdocs.org/incident/19910316005469A), Mar 16, 1991: Amtros OSPREY2, Aurora, OR, Substantial damage. Engine quit. Tried to return but crashed in orchard short of runway. Auto fuel pump to transfer fuel was installed.

## Other investigations on N69CK (1)

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 SEA89LA141](https://openairdocs.org/ntsb/SEA89LA141), Jul 27, 1989: King Osprey II (N69CK), West Linn, OR, substantial damage. Probable cause: THE PILOT DID NOT PROPERLY RECOVER FROM A BOUNCED WATER 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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