- Date
- April 18, 1987, 13:00 local (21:00 UTC)
- Place
- Yentna River, AK
- Injuries
- 2 uninjured
- Damage
- Substantial damage
- Phase of flight
- Takeoff
- Aircraft
- N92524Piper PA-12
- Weather
- Visual (VMC) · Day
- Status
- Completed · report March 30, 1988
- Report
- Approved by Office Director
- NTSB office
- Alaska Regional Office
- FAA report
- 19870418053449A
- Case key
- 4841
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.
On ground/water collision with object
Terrain condition - high vegetationFactor
Terrain condition - loose gravel/sandyFactor
Ground loop/swerve - not correctedCause
Directional control - not maintainedCause
Nose over
Analysis
The pilot stated that during the takeoff roll on the gravel bar he lost directional control of the aircraft causing the aircraft to nose over on its back.
Aircraft
- Registration
- N92524
- Reported as
- Piper PA-12
- Category
- Airplane
- Serial number
- 1247
- Airframe hours
- 260
- Engine
- Lycoming O-320, 160 horsepower, reciprocating
- Damage
- Substantial damage
- Flight
- Personal · Part 91
- Operator
- William H. Tinney
- Registered owner
- William E. Clay
- Airworthiness certificate
- Standard, Normal
- Last inspection
- Annual · May 27, 1986 · 40 hours before
- Departed
- Z41 · Anchorage, AK
Flight crew
As NTSB recorded them. NTSB leaves out names.
- Role
- Pilot
- Age
- 46
- Certificate
- Private
- Airplane ratings
- Single-engine land
- Medical
- Class 3, Valid Medical--no waivers/lim.
- Seat
- Front
- Flight hours
- 158 total · 158 in this make and model · 57 as pilot in command · 25 in the last 90 days · 15 in the last 30 days · 4 in the last 24 hours
Weather
- Conditions
- Visual (VMC) · Day
- Wind
- 320° at 5 knots
- Visibility
- 90 statute miles
- Lowest ceiling
- 10,000 ft broken
- Temperature
- 39 °F, dew point 30 °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.