ANC97LA006

NTSB accident investigation · Piper PA-22/20 · Kasilof, AK · October 26, 1996

Accident · No injuriesLimited investigationFinal report
Date
October 26, 1996, 14:00 local (22:00 UTC)
Place
Kasilof, AK
Injuries
1 uninjured
Damage
Substantial damage
Phase of flight
Approach
Aircraft
N7431DPiper PA-22/20
Weather
Visual (VMC) · Day
Status
Completed · report March 31, 1998
Report
Approved by Office Director
NTSB office
Alaska Regional Office
FAA report
19961026035669A
Case key
2951

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 misjudgment of distance and altitude on final approach to land, which resulted in an undershoot and collision with a dirt bank before reaching the proper touchdown point. A factor related to the accident was: the proximity of the frozen dirt bank at the approach end of the intended point of landing.

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.

UndershootApproach - vfr pattern - final approach
Distance/altitude - misjudgedPilot in commandCause
In flight collision with terrain/waterLanding - flare/touchdown
Terrain condition - dirt bank/rising embankmentFactor

Analysis

The pilot was conducting touch-and-go operations on a frozen lake adjacent to his property. A small frozen mound of dirt was located at the approach end of the lake. The pilot indicated that he was concerned about stopping on the frozen surface of the lake, and his approach path to the lake was a little low. The right main landing gear struck the mound of dirt before touchdown and was folded back against the fuselage. The airplane then contacted the surface of the lake and received damage to the right main landing gear, propeller, and the spar and outboard ribs of the right wing.

Factual narrative

On October 26, 1996, about 1400 Alaska daylight time, a wheel equipped Piper PA-22/20, N7431D, collided with terrain at a frozen lake near Kasilof, Alaska. The airplane was being operated as a visual flight rules (VFR) local area personal flight when the accident occurred. The airplane, registered to and operated by the pilot sustained substantial damage. The certificated private pilot, the sole occupant, was not injured. Visual meteorological conditions prevailed.

On October 31, 1996, at 0900, the pilot reported in a telephone conversation with the National Transportation Safety Board (NTSB) investigator-in-charge (IIC) that he was conducting touch and go operations on a frozen lake adjacent to his property. The lake is oriented on a north/south direction and he was landing toward the north. It is about 1,200 feet long and about 40 feet wide. A small frozen mound of dirt is located at the approach end of the lake. The pilot indicated that he was concerned about stopping on the frozen surface of the lake and his approach path to the lake was a little low. The right main landing gear struck the mound of dirt before touchdown and was folded back against the fuselage. The airplane then contacted the surface of the lake and received damage to the right main landing gear, propeller, and the spar and outboard ribs of the right wing.

Aircraft

Registration
N7431D
Reported as
Piper PA-22/20
Category
Airplane
Serial number
22-5190
Airframe hours
2,013
Engine
Lycoming O-320, 150 horsepower, reciprocating
Damage
Substantial damage
Flight
Personal · Part 91
Registered owner
Tommy J. Hudson
Airworthiness certificate
Standard, Normal
Last inspection
Annual · July 21, 1996 · 29 hours before

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
44
Certificate
Private
Airplane ratings
Single-engine land
Medical
Class 3, Valid Medical--no waivers/lim.
Seat
Left
Flight hours
173 total · 106 in this make and model · 129 as pilot in command · 45 in the last 90 days · 10 in the last 30 days

Weather

Conditions
Visual (VMC) · Day
Wind
10° at 5 knots
Visibility
70 statute miles
Lowest ceiling
None
Temperature
19 °F, dew point 7 °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 N7431D · 1

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