ANC00LA026

NTSB accident investigation · Cessna 180 · Glennallen, AK · February 8, 2000

Accident · No injuriesLimited investigationFinal report
Date
February 8, 2000, 13:00 local (17:00 UTC)
Place
Glennallen, AK
Injuries
1 uninjured
Damage
Substantial damage
Phase of flight
Landing
Aircraft
N4961ACessna 180
Weather
Visual (VMC) · Day
Status
Completed · report May 9, 2001
Report
Approved by Office Director
NTSB office
Alaska Regional Office
FAA report
20000208042029A
Case key
48735

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 an unsuitable landing site on a frozen, snow-covered lake. A factor associated with the accident was an area of drifted snow at the landing site.

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/waterLanding - roll
Terrain condition - snow covered
Terrain condition - snowbankFactor
Unsuitable terrain or takeoff/landing/taxi area - selectedPilot in commandCause
Nose overLanding - roll

Analysis

The pilot reported he was landing his ski-equipped airplane on a frozen, snow-covered lake to await improved weather conditions. During the landing roll, he said he did not see an area of drifted snow. The left main landing gear ski encountered the snow drift, and the airplane turned to the left and nosed over, sustaining substantial damage.

Factual narrative

On February 8, 2000, about 1300 Alaska standard time, a ski-equipped Cessna 180 airplane, N4961A, sustained substantial damage while landing at Caribou Lake, about 30 miles west-southwest of Glennallen, Alaska. The solo commercial pilot was not injured. The 14 CFR Part 91 personal flight departed Nabesna, Alaska, about 1130, and was en route to Anchorage, Alaska. The flight operated in visual meteorological conditions without a formal flight plan.

During a telephone conversation with the NTSB investigator-in-charge (IIC) about 45 minutes after the accident, the pilot related he made an intermediate stop at Caribou Lake to wait out deteriorating weather conditions. During the landing roll, the left main landing gear ski encountered deep, drifted snow, and the airplane turned to the left, nosed over, and received substantial damage to the left wing, vertical stabilizer, and rudder. The pilot reported there were no preaccident mechanical problems with the airplane, and that he just didn't see the drifted snow in time to avoid it.

Aircraft

Registration
N4961A
Reported as
Cessna 180
Category
Airplane
Serial number
32358
Airframe hours
6,576
Engine
Continental O-470-K, 230 horsepower, reciprocating
Damage
Substantial damage
Flight
Personal · Part 91
Registered owner
Wendell K. Ellis
Airworthiness certificate
Standard, Normal; Standard, Utility
Last inspection
Annual · February 2, 2000 · 3 hours before
Departed
75Z · Nabesna, AK
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
42
Certificate
Commercial
Airplane ratings
Single-engine sea, Single-engine land
Instrument ratings
Airplane
Medical
Class 2, Valid Medical--no waivers/lim.
Seat
Left
Flight hours
5,500 total · 502 in this make and model · 5,385 as pilot in command · 20 in the last 90 days · 15 in the last 30 days · 2 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
Calm
Visibility
7 statute miles
Lowest ceiling
1,500 ft overcast
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 N4961A · 1

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