ANC96LA170

NTSB accident investigation · Piper PA-18 · Skwentna, AK · January 22, 1996

Accident · No injuriesLimited investigationFinal report
Date
January 22, 1996, 15:00 local (19:00 UTC)
Place
Skwentna, AK
Injuries
1 uninjured
Damage
Substantial damage
Phase of flight
Landing
Aircraft
N7797BPiper PA-18
Weather
Visual (VMC) · Day
Status
Completed · report August 25, 1997
Report
Approved by Office Director
NTSB office
Alaska Regional Office
FAA report
19960122042389A
Case key
2916

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 pilot's selection of an unsuitable site for landing. A factor associated with the accident is the snow-covered terrain.

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
Terrain condition - snow coveredFactor
Unsuitable terrain or takeoff/landing/taxi area - selectedPilot in commandCause

Analysis

The pilot reported he landed his wheel-equipped airplane on a remote, snow-covered sandbar. During the landing roll, the airplane's wheels sunk into the snow, and the airplane nosed over. The pilot said he should not have attempted to land on the snow covered terrain without skis.

Factual narrative

On January 22, 1996, about 1500 Alaska standard time, a wheel equipped Piper PA-18 airplane, N7797B, sustained substantial damage while landing on a remote, snow covered sandbar. The solo private pilot was not injured. Visual meteorological conditions prevailed for the 14 CFR Part 91 flight, which departed the Skwentna Airport about 1400, and was en route to Merrill Field, Anchorage, Alaska.

The pilot wrote in his NTSB Pilot/Operator Aircraft Accident Report that the airplane nosed over onto its back during the landing roll. He noted in the Recommendation section of the report the accident could have been prevented if the airplane's landing gear had been equipped with skis instead of wheels.

The pilot did not report the accident until November 26, 1996, when he mentioned the accident to an FAA inspector who was questioning him about another, more recent accident. The pilot said he felt the damage incurred during the first accident was minor, and thus the accident did not need to be reported. Further statements by the pilot, and excerpts from the airplane's log books, indicate the airplane received substantial damage to the rudder and right wing.

Aircraft

Registration
N7797B
Reported as
Piper PA-18
Category
Airplane
Serial number
18-4449
Engine
Lycoming O-320-A2B, 160 horsepower, reciprocating
Damage
Substantial damage
Flight
Personal · Part 91
Registered owner
Clayton R. Waggood
Airworthiness certificate
Standard, Utility; Standard, Normal
Last inspection
Annual · March 3, 1995
Departed
SKW
Destination
MRI · 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
38
Certificate
Private
Airplane ratings
Single-engine land
Medical
Unknown, Unknown
Seat
Front
Flight hours
430 total · 285 in this make and model · 430 as pilot in command · 81 in the last 90 days · 33 in the last 30 days · 2 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
Calm
Visibility
50 statute miles
Lowest ceiling
None
Temperature
25 °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 N7797B · 2

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