ANC95LA017

NTSB accident investigation · Cessna 185 · Takotna, AK · December 12, 1994

Accident · Serious injuriesLimited investigationFinal report
Date
December 12, 1994, 11:30 local (15:30 UTC)
Place
Takotna, AK
Injuries
1 serious, 1 minor, 1 uninjured
Damage
Destroyed
Phase of flight
Initial climb
Aircraft
N4552FCessna 185
Weather
Visual (VMC) · Day
Status
Completed · report June 29, 1995
Report
Approved by Office Director
NTSB office
Alaska Regional Office
FAA report
19941212041499A
Case key
2615

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 inadequate preflight planning for the departure. A snow covered runway, flat lighting conditions, and a snowbank 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.

In flight collision with terrain/waterTakeoff - initial climb
Airport facilities,runway/landing area condition - snow coveredFactor
Light condition - otherFactor
Terrain condition - snowbankFactor
Preflight planning/preparation - inadequatePilot in commandCause
Loss of control - in flightTakeoff - initial climb
In flight collision with objectDescent - uncontrolled
Object - tree(s)

Analysis

The pilot was departing a remote airport as a continuing portion of an on-demand charter flight with two passengers. The 1,717 feet long runway was covered with 4 to 5 inches of snow and the perimeter of the runway had snow banks along the edges and ends. The pilot began the takeoff roll and lifted off about halfway down the runway. Flat lighting conditions made it difficult to distinguish the runway boundaries from the surrounding terrain. The airplane settled to the runway near the departure end and struck a 2 foot high snow berm at the end of the runway. The airplane then descended toward lower terrain off the departure end of the runway and collided with several trees. A post crash fire consumed the airplane.

Factual narrative

On December 12, 1994, about 1130 Alaska standard time, a wheel/ski equipped Cessna model 185 airplane, N4552F, operated by Woods Air Service, Inc. collided with terrain during takeoff from runway 24 at Takotna, Alaska. The commercial certificated pilot received minor injuries, one passenger received serious injuries, and the remaining passenger was not injured. The airplane was destroyed by the impact with the terrain and a postcrash fire. The 14 CFR Part 135 on-demand flight was en route to Nikolai, Alaska when the accident occurred. VFR conditions reportedly prevailed in the area at the time of the mishap and a round robin flight plan from McGrath, Alaska was on file with the Kenai Automated Flight Service Station (AFSS) with intermediate stops at Takotna, Nikolai and Telida, Alaska.

On the afternoon of December 13, 1994, the NTSB investigator-in-charge conducted a telephone interview with the pilot of N4552F. The pilot said that he departed McGrath at approximately 0942 and performed a wheel landing on runway 060 at Takotna about 15 minutes later and parked the airplane on the designated ramp area. He said that with the large amount of snow the area had received this year, he was mindful of the snow berms along the sides and the ends of the runways at the airports in the area but did not consciously pay any attention to the snow berm as he flew over the approach end of runway 060. The four to five inches of fresh unpacked snow on the ground prevented him from turning the airplane under power in the ramp area. He shut the airplane down and physically lifted the tail of the airplane and turned it toward the runway. He boarded two passengers and there was also about 170 pounds of cargo on board the plane, which included the survival gear. He lined the airplane up between the left and right side cones at the end of runway 24. Due to the flat light condition, it was difficult to distinguish the runway boundaries with the surrounding terrain. He began the wheel takeoff from the ramp area, which he said meant that there was about 300 feet of runway that he did not use. The takeoff was performed with two notches of flap, and the wind was calm. He experienced no problems with the airplane during the takeoff. He felt the airplane became airborne from one half to two thirds down the runway and that the plane was in a climbing attitude when it collided with what he believed to be a snow berm just beyond the end of the runway. The plane pitched forward and descended into trees about 1,000 feet beyond the end of the runway. Shortly after the aircraft came to a stop in a nose down tail high attitude against the ground, the top of the plane caught fire. Based upon his post accident observation of the snow berm at the end of runway 24, he estimated the height of the berm to be from three to four feet.

Witnesses at the airport reported that at the time of the accident, the conspicuity between the runway and the surrounding terrain was poor due to the flat light condition and that the runway had four to six inches of new unpacked snow. Airport maintenance personnel reported that the runway was last plowed on December 11, 1994, and that the snow berms on either end of the runway on the day of the accident were about two feet high.

Aircraft

Registration
N4552F
Reported as
Cessna 185
Category
Airplane
Serial number
1851052
Airframe hours
6,431
Engine
Continental IO-520-D, 300 horsepower, reciprocating
Damage
Destroyed
Fire
On-Ground
Flight
Part 135
Registered owner
Woods Air Service Inc.
Airworthiness certificate
Standard, Normal
Last inspection
100 hour · December 5, 1994 · 5 hours before
Destination
MCG · Mcgrath, AK
Flight plan
VFR
Airport
TCT · Takotna, runway 24, 1,717 × 65 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
50
Certificate
Commercial
Airplane ratings
Single-engine land, Single-engine sea
Instrument ratings
Airplane
Medical
Class 2, Valid Medical--w/ waivers/lim
Seat
Left
Flight hours
5,200 total · 1,000 in this make and model · 60 in the last 90 days · 15 in the last 30 days

Weather

Conditions
Visual (VMC) · Day
Wind
110° at 6 knots
Visibility
6 statute miles
Lowest ceiling
4,700 ft broken
Temperature
10 °F, dew point 7 °F
Altimeter
29.00 inHg
Observed at
MCG, 13 nm away

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 N4552F · 1

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