ANC95LA003

NTSB accident investigation · Cessna A185F · Kotzebue, AK · October 15, 1994

Accident · No injuriesLimited investigationFinal report
Date
October 15, 1994, 11:40 local (19:40 UTC)
Place
Kotzebue, AK
Injuries
3 uninjured
Damage
Substantial damage
Phase of flight
Taxi
Aircraft
N20752Cessna A185F
Weather
Visual (VMC) · Day
Status
Completed · report May 9, 1995
Report
Approved by Office Director
NTSB office
Alaska Regional Office
FAA report
19941015041979A
Case key
2605

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

A failure of the pilot to maintain adequate distance from the terrain (snow bank). Flat lighting and low contrast conditions were factors in the accident.

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/waterTaxi - to takeoff
Terrain condition - snowbank
Distance - not maintainedPilot in commandCause
Light condition - otherFactor

Analysis

The pilot and two passengers of a wheel/ski equipped airplane were taxiing for takeoff for an on-demand air taxi flight. The right ski contacted a snow berm and pivoted the airplane. The left wing then struck a snow bank. The pilot indicated that flat lighting conditions and low contrast made distinction between the snow berm and the surrounding terrain difficult.

Factual narrative

On October 15, 1994, at 1140 Alaska daylight time, a wheel/ski equipped Cessna A185F airplane, operated by Cape Smythe Air Service Inc., collided with a snow bank while taxiing for takeoff at the Kotzebue Airport in Kotzebue, Alaska. The airline transport certificated pilot-in-command and his two revenue passengers were not injured and the airplane was substantially damaged. The flight operation was being conducted under the on- demand rules contained in 14 CFR Part 135. A VFR flight plan was on file with the Kotzebue Flight Service Station (FSS) and visual meteorological conditions prevailed at the time of the mishap.

During a telephone interview, the pilot told the NTSB investigator-in-charge that while taxiing for takeoff the right ski drove onto a snow berm causing the airplane to veer to the left and collide with a snow pile. The left wing, left aileron, and left elevator were damaged in the mishap. The pilot reported that the mishap occurred during a flat light condition which made it difficult for him to distinguish the distance between the snow bank and the snow covered terrain in the background.

Aircraft

Registration
N20752
Reported as
Cessna A185F
Category
Airplane
Serial number
18503041
Airframe hours
3,493
Engine
Continental IO-520-D, 285 horsepower, reciprocating
Damage
Substantial damage
Flight
Part 135
Registered owner
Cape Smythe Air Service, Inc.
Airworthiness certificate
Standard, Normal
Last inspection
100 hour · October 13, 1994 · 6 hours before
Destination
Sheshalik, AK
Flight plan
VFR
Airport
OTZ · Kotzebue

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
33
Certificate
Airline transport
Airplane ratings
Multi-engine land, Single-engine land
Instrument ratings
Airplane
Medical
Class 1, Valid Medical--no waivers/lim.
Seat
Left
Flight hours
5,151 total · 395 in this make and model · 4,931 as pilot in command · 286 in the last 90 days · 73 in the last 30 days · 6 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
360° at 6 knots
Visibility
10 statute miles

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 N20752 · 7

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

NTSB ANC00LA099Accident · No injuriesLimited investigationFinal reportBarrow, AKThe pilot's selection of unsuitable terrain for landing. A factor in the accident was a hidden obstruction, and soft terrain.Aug 12, 2000 · Substantial damageNTSB ANC97LA131Accident · No injuriesLimited investigationFinal reportBarrow, AKthe pilot's inadequate compensation for wind conditions, and his failure to maintain directional control of the airplane, which resulted in a ground swerve and damage to the airplane. A factor relating to the accident was: the crosswind condition.Aug 25, 1997 · Substantial damageNTSB ANC96LA114Accident · No injuriesLimited investigationFinal reportWainwright, AKThe pilot's excessive application of the brakes during the landing roll.Aug 2, 1996 · Substantial damageNTSB ANC93LA147Accident · No injuriesLimited investigationFinal reportPoint Barrow, AKFuel exhaustion as a result of the pilot in command's not refueling. A factor in the accident was the operator/management inadequate flight following and operational control over the flight.Aug 14, 1993 · Substantial damageNTSB ANC93LA016Accident · No injuriesLimited investigationFinal reportPoint Hope, AKThe failure of the no. two cylinder connecting rod due to a slipped (spun) main crankshaft bearing which blocked off the oil hole to the connecting rod. A factor in the accident was the unsuitable terrain on which to perform a forced landing.Nov 28, 1992 · Substantial damageNTSB ANC92LA067Accident · No injuriesLimited investigationFinal reportBarrow, AKThe improper use of the flt controls by the second pilot during landing roll. Factors relating to the mishap were the rough/uneven snow covered terrain.May 3, 1992 · Substantial damageNTSB ANC89IA019Incident · No injuriesIncident investigationFinal reportDeadhorse, AKAcft bounced several times during landing. The pilot collapsed shortly after getting out of the airplane. Blood samples, taken from the pilot three hours after landing, contained 22.1% carbon monoxide. The left engine muffler overboard tube was broken loose…Nov 22, 1988 · No damage