- Date
- February 9, 1989, 14:25 local (18:25 UTC)
- Place
- Nome, AK
- Injuries
- 1 serious
- Damage
- Substantial damage
- Phase of flight
- Enroute
- Aircraft
- N73771Cessna 207
- Weather
- Visual (VMC) · Day
- Status
- Completed · report September 28, 1990
- Report
- Approved by Office Director
- NTSB office
- Alaska Regional Office
- FAA report
- 19890209002159A
- Case key
- 5100
From the NTSB’s public API. By law, NTSB reports can’t be used as evidence in lawsuits over the accident.
On this page
Probable cause
The partial loss of power resulting from fuel interruption due to a blockage in the engine fuel pump low pressure check valve.
Sequence of events
NTSB’s coding before 2008: each occurrence and phase of flight, and the causes and factors under it. The codes are defined in NTSB’s coding manual.
Analysis
The airplane transport pilot reported that while in cruise flight he experienced a partial loss of engine power twice within a period of about three minutes. He was able to regain engine power both times, but the second time the airplane impacted on a snow-covered mountain side before the descent could be stopped. A tear down and analysis of the engine fuel pump revealed an eighth inch long thread-like metal sliver lodged under the low pressure check valve plunger.
Aircraft
- Registration
- N73771
- Reported as
- Cessna 207
- Category
- Airplane
- Serial number
- 20700626
- Airframe hours
- 6,537
- Engine
- Continental IO-520-F, 300 horsepower, reciprocating
- Damage
- Substantial damage
- Flight
- Business · Part 91
- Registered owner
- Olson Air Service, Inc.
- Airworthiness certificate
- Standard, Normal
- Last inspection
- 100 hour · January 27, 1989 · 18 hours before
- Departed
- CIL · Council, AK
- Destination
- OME · Nome, AK
- Flight plan
- Company VFR
Matched to the registry by N-number and the event date; the registry’s history has gaps, so older matches can be wrong. Compare the reported make and model.
Flight crew
As NTSB recorded them. NTSB leaves out names.
- Role
- Pilot
- Age
- 48
- Certificates
- Commercial, Flight instructor, Airline transport
- Airplane ratings
- Single-engine land, Multi-engine land
- Instrument ratings
- Airplane
- Medical
- Class 1, Valid Medical--w/ waivers/lim
- Seat
- Left
- Flight hours
- 19,000 total · 2,000 in this make and model · 19,000 as pilot in command · 83 in the last 90 days · 1 in the last 24 hours
Weather
- Conditions
- Visual (VMC) · Day
- Wind
- 135° at 10 knots
- Visibility
- 3 statute miles
- Temperature
- 28 °F
FAA reports on this event · 1
The FAA’s own accident and incident reports, matched to the aircraft by N-number and date.
Other investigations on N73771 · 1
Matched to the same aircraft by N-number and date.