- Date
- June 20, 1986, 19:30 local (Jun 21, 1986, 03:30 UTC)
- Place
- Anchorage, AK
- Injuries
- 1 uninjured
- Damage
- Substantial damage
- Phase of flight
- Emergency descent
- Aircraft
- N58988Piper L-4H
- Weather
- Visual (VMC) · Day
- Status
- Completed
- Report
- Approved by Office Director
- NTSB office
- Alaska Regional Office
- FAA report
- 19860620027009A
- Case key
- 4597
From the NTSB’s public API. By law, NTSB reports can’t be used as evidence in lawsuits over the accident.
On this page
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 pilot/mechanic stated the engine oil pressure gauge began flickering, so he elected to land and during the descent the engine failed. He landed downwind in 20 knot winds and during the landing roll, across tundra/mud the airplane's wheels struck a large water filled hole and nosed over. Post acc exam of the acft revealed that the bottom of the fuselage was covered with oil. The oil breather tube had an oil can wired to it. The plt did his own maintenance work. The oil was being blown out thru the breather tube. Since the acft was upside down any remaining oil had drained out. The plt was operating the acft knowing that the lubricating sys was improper.
Aircraft
- Registration
- N58988
- Reported as
- Piper L-4H
- Category
- Airplane
- Serial number
- 12097
- Airframe hours
- 1,900
- Engine
- Continental C90-8F, 90 horsepower, reciprocating
- Damage
- Substantial damage
- Flight
- Personal · Part 91
- Registered owner
- Bob Olmstead
- Airworthiness certificate
- Standard, Normal
- Last inspection
- Annual · June 20, 1985 · 50 hours before
- Departed
- Moose Point, AK
- Destination
- Z41 · Anchorage, AK
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
- 49
- Certificate
- Private
- Airplane ratings
- Single-engine land
- Medical
- Class 3, Valid Medical--w/ waivers/lim
- Seat
- Front
- Flight hours
- 612 total · 584 in this make and model · 126 as pilot in command · 15 in the last 90 days · 2 in the last 24 hours
Weather
- Conditions
- Visual (VMC) · Day
- Wind
- 160° at 20 knots, gusting 30
- Visibility
- 90 statute miles
- Lowest ceiling
- 2,000 ft broken
- Temperature
- 55 °F, dew point 43 °F
- Altimeter
- 29.00 inHg
FAA reports on this event · 1
The FAA’s own accident and incident reports, matched to the aircraft by N-number and date.