DEN87LA030

NTSB accident investigation · Piper PA-12 · Opheim, MT · December 15, 1986

Accident · No injuriesLimited investigationFinal report
Date
December 15, 1986, 12:00 local (19:00 UTC)
Place
Opheim, MT
Injuries
1 uninjured
Damage
Substantial damage
Phase of flight
Takeoff
Aircraft
N78588Piper PA-12
Weather
Visual (VMC) · Day
Status
Completed
Report
Approved by Office Director
FAA report
19861215067869A
Case key
17158

From the NTSB’s public API. By law, NTSB reports can’t be used as evidence in lawsuits over the accident.

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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 encounter with terrain/waterTakeoff - roll/run
Terrain condition - snowbankCause
Terrain condition - downhillFactor
Unsuitable terrain or takeoff/landing/taxi area - selectedPilot in commandCause
Weather condition - tailwindFactor
Planning/decision - improperPilot in commandCause
Nose overTakeoff - roll/run

Analysis

The plt elected to take off downhill because he said the hill was too steep to try a takeoff uphill even into the wind. He said that just prior to lift off, he hit a snowbank which slowed the acft down. Deeper snow was then contacted and the acft flipped over.

Aircraft

Registration
N78588
Reported as
Piper PA-12
Category
Airplane
Serial number
12-3957
Airframe hours
3,049
Engine
Lycoming O-320-E2D, 150 horsepower, reciprocating
Damage
Substantial damage
Flight
Personal · Part 91
Registered owner
Charles Tmothy Trower
Airworthiness certificate
Standard, Normal
Last inspection
Annual · January 12, 1986 · 30 hours before
Departed
Scobey, MT

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
34
Certificate
Commercial
Airplane ratings
Single-engine land
Instrument ratings
Airplane
Medical
Class 2, Valid Medical--no waivers/lim.
Seat
Front
Flight hours
4,150 total · 200 in this make and model · 4,000 as pilot in command · 70 in the last 90 days · 2 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
180° at 5 knots
Visibility
40 statute miles
Lowest ceiling
None
Temperature
30 °F, dew point 25 °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.

Other investigations on N78588 · 1

Matched to the same aircraft by N-number and date.