SEA96LA018

NTSB accident investigation · Piper PA-22-160 · Seeley Lake, MT · November 15, 1995

Accident · No injuriesLimited investigationFinal report
Date
November 15, 1995, 10:20 local (17:20 UTC)
Place
Seeley Lake, MT
Injuries
2 uninjured
Damage
Substantial damage
Phase of flight
Landing
Aircraft
N8431DPiper PA-22-160
Weather
Visual (VMC) · Day
Status
Completed · report February 27, 1996
Report
Approved by Office Director
FAA report
19951115036519A
Case key
42310

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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Probable cause

The pilot's selection of unsuitable terrain for landing. The snow covered runway was a factor.

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.

Nose overLanding - roll
Airport facilities,runway/landing area condition - snow coveredFactor
Unsuitable terrain or takeoff/landing/taxi area - selectedPilot in commandCause

Analysis

The pilot reported that he overflew the runway to try to determine the depth of the snow on the runway. The pilot saw tire tracks next to the runway and thought that the depth was about two inches. The pilot initiated an approach for a landing. During the landing roll, the nose wheel dug into the snow and the airplane nosed over. It was later determined that the snow was five inches deep with a crusty top layer. The airport/facility directory states that the airport was closed at the time of the accident.

Factual narrative

On November 15, 1995, at 1020 mountain standard time, a Piper PA- 22-160, N8431D, nosed over during the landing roll at the Seeley Lake Airport, Seeley Lake, Montana. Visual meteorological conditions prevailed at the time and no flight plan was filed for the personal flight. The airplane was substantially damaged and the private pilot and his passenger were not injured. The flight originated from Butte, Montana, on November 15, 1995, at 0830.

During a telephone interview and subsequent written statement, the pilot stated that he overflew the runway twice to try to determine the depth of the snow that covered the runway. The pilot saw vehicle tracks next to the runway and thought that the depth was about two inches. The pilot initiated an approach to runway 34, and after the airplane touched down and began the landing roll, the nose gear dug into the snow and the airplane nosed over.

It was later determined that the depth of the snow was approximately five inches deep with a crusty top layer.

The Northwest Airport/Facility Directory states that the airport is closed from November-May.

Aircraft

Registration
N8431D
Reported as
Piper PA-22-160
Category
Airplane
Serial number
22-5686
Airframe hours
3,193
Engine
Lycoming O-320-B2A, 160 horsepower, reciprocating
Damage
Substantial damage
Flight
Personal · Part 91
Registered owner
Larry G. Brewer
Airworthiness certificate
Standard, Normal
Last inspection
Annual · June 2, 1995 · 18 hours before
Departed
BTU · Butte, MT
Airport
23S · Seeley Lake, runway 34, 3,475 × 75 ft, gravel

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
45
Certificate
Private
Airplane ratings
Single-engine land
Medical
Class 3, Valid Medical--no waivers/lim.
Seat
Left
Flight hours
1,240 total · 150 in this make and model · 1,180 as pilot in command · 18 in the last 90 days · 8 in the last 30 days

Weather

Conditions
Visual (VMC) · Day
Wind
Calm
Visibility
20 statute miles
Lowest ceiling
None
Temperature
39 °F

FAA reports on this event · 1

The FAA’s own accident and incident reports, matched to the aircraft by N-number and date.