ANC98LA151

NTSB accident investigation · Cessna 185F · Fairbanks, AK · September 16, 1998

Accident · No injuriesLimited investigationFinal report
Date
September 15, 1998, 16:00 local (Sep 16, 1998, 00:00 UTC)
Place
Fairbanks, AK
Injuries
1 uninjured
Damage
Substantial damage
Phase of flight
Takeoff
Aircraft
N93904Cessna 185F
Weather
Visual (VMC) · Day
Status
Completed · report September 28, 1999
Report
Approved by Office Director
NTSB office
Alaska Regional Office
FAA report
19980915028709A
Case key
43984

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 unsuitable terrain for takeoff and his failure to maintain adequate obstacle clearance.

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 collision with objectTakeoff - roll/run
Object - tree(s)
Unsuitable terrain or takeoff/landing/taxi area - selectedPilot in commandCause
Clearance - not maintainedPilot in commandCause

Analysis

The certificated private pilot was flying a float equipped airplane from a remote mountain area to pick up supplies for a hunting/guide business. During the flight, weather conditions, consisting of low ceilings and low visibility, forced the pilot to deviate from his planned route. He was flying over a public use cabin located on a remote lake, and noticed a person on the ground waving. The pilot landed on the lake to wait for improving weather conditions, and to determine if the person at the cabin was in need of assistance. After waiting for better weather conditions, the pilot began a takeoff from the lake without the person at the cabin. The pilot estimated the lake was about 1/4 mile long. As the airplane was about to lift off, the left wing collided with several trees located along the bank of the lake. The airplane then collided with the shore, and received damage to the engine, propeller, left wing, the right wing lift strut, and the float assemblies.

Factual narrative

On September 15, 1998, about 1600 Alaska daylight time, a float equipped Cessna 185F airplane, N93904, sustained substantial damage while taking off from a remote area lake, about 42 miles northwest of Fairbanks, Alaska. The airplane was being operated as a visual flight rules (VFR) cross-country business flight under Title 14 CFR Part 91 when the accident occurred. The airplane was registered to Thomas Hillis, Fairbanks, and operated by the pilot in support of the airplane owner's hunting/guide business. The certificated private pilot, the sole occupant, was not injured. Visual meteorological conditions prevailed.

During a telephone conversation with the National Transportation Safety Board (NTSB) investigator-in-charge (IIC), on September 18, 1998, at 1115, the pilot reported he works as a guide for Wolf Creek Outfitters, Fairbanks. The pilot departed the Brooks Mountains near Bettles, Alaska, about 1100 for a flight to Fairbanks to pick up supplies. During the flight, weather conditions, consisting of low ceilings and low visibility, forced the pilot to deviate from his planned route. The pilot was flying over a public use cabin, located about 10 miles east of Livengood, Alaska, along the Colorado Creek. He noticed a person on the ground waving. The pilot landed on an adjacent small lake to wait for improving weather conditions, and to determine if the person at the cabin was in need of assistance.

The pilot waited until 1600, and began a takeoff from the lake without the person at the cabin. The pilot estimated the lake was about 1/4 mile long. As the airplane was about to lift off, the left wing collided with several trees located along the bank of the lake. The airplane then collided with the shore, and received damage to the engine, propeller, left wing, the right wing lift strut, and the float assemblies.

The pilot and the cabin occupant were both rescued on September 16, 1998.

Aircraft

Registration
N93904
Reported as
Cessna 185F
Category
Airplane
Serial number
18503261
Airframe hours
2,000
Engine
Continental IO-520, 300 horsepower, reciprocating
Damage
Substantial damage
Flight
Business · Part 91
Operator
Jerald D. Stansel
Registered owner
Thomas Hillis
Airworthiness certificate
Standard, Normal
Last inspection
Annual · May 9, 1998
Departed
Bettles, AK
Destination
FAI · 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
51
Certificate
Private
Airplane ratings
Single-engine land, Single-engine sea
Medical
Class 3, Valid Medical--w/ waivers/lim
Seat
Left
Flight hours
13,000 total · 2,000 in this make and model · 50 in the last 90 days · 30 in the last 30 days · 6 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Visibility
2 statute miles
Lowest ceiling
None
Temperature
30 °F

FAA reports on this event · 1

The FAA’s own accident and incident reports, matched to the aircraft by N-number and date.