ANC99LA156

NTSB accident investigation · Stinson 108 · Sparrevohn, AK · September 20, 1999

Accident · No injuriesLimited investigationFinal report
Date
September 20, 1999, 13:00 local (21:00 UTC)
Place
Sparrevohn, AK
Injuries
1 uninjured
Damage
Destroyed
Phase of flight
Takeoff
Aircraft
N97713Stinson 108
Weather
Visual (VMC) · Day
Status
Completed · report May 17, 2001
Report
Approved by Office Director
NTSB office
Alaska Regional Office
FAA report
19990920029139A
Case key
47685

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 inadequate compensation for wind conditions. Factors in the accident were a gusting crosswind, and high vegetation.

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 weatherTakeoff - roll/run
Weather condition - crosswindFactor
Compensation for wind conditions - inadequatePilot in commandCause
Weather condition - gustsFactor
On ground/water encounter with terrain/waterTakeoff - roll/run
Terrain condition - high vegetationFactor

Analysis

The private certificated pilot was departing a remote ridge top at the end of a hunting trip. The wind was from the east about 5 knots. He loaded the airplane with moose and caribou meat, and departed the ridge top toward the east. During the takeoff roll, an approximate 20 knot gust of wind struck the airplane from the right. The airplane was pushed to the left, and the left wing struck some bushes. The airplane pivoted to the left and descended downhill. After the airplane came to rest, it caught fire, and was destroyed.

Factual narrative

On September 20, 1999, about 1300 Alaska daylight time, a tundra tire equipped Stinson 108 airplane, N97713, was destroyed by impact and a postimpact fire, when the airplane crashed on takeoff from a remote area, about 10 miles south of the Sparrevohn Long Range Radar Station (LRRS), Sparrevohn, Alaska, about latitude 60 degrees, 55 minutes north, and longitude 155 degrees, 35 minutes west. The airplane was being operated as a visual flight rules (VFR) cross-country personal flight to Iliamna, Alaska, when the accident occurred. The airplane was operated by the pilot. The private certificated 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 October 13, 1999, at 0905, the pilot reported he and two friends landed on a remote ridge top to go hunting. At the completion of the trip, he loaded the airplane with moose and caribou meat, and planned to fly to Iliamna. The pilot said he departed the ridge top toward the east. During the takeoff roll, an approximate 20 knot gust of wind struck the airplane from the right. The airplane was pushed to the left, and the left wing struck some bushes. The airplane pivoted to the left and descended downhill. After the airplane came to rest, it caught fire, and was destroyed. The pilot and his two friends hiked out of the area, and arrived at the Sparrevohn LRRS two days later.

Aircraft

Registration
N97713
Reported as
Stinson 108
Category
Airplane
Serial number
108-713
Airframe hours
1,978
Engine
Franklin 6A4-165-B3, 165 horsepower, reciprocating
Damage
Destroyed
Fire
On-Ground
Flight
Personal · Part 91
Registered owner
Bruce C. Junes
Airworthiness certificate
Standard, Normal
Last inspection
Annual · September 10, 1999 · 9 hours before
Destination
PAIL · Iliamna, 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
44
Certificate
Private
Airplane ratings
Single-engine land
Medical
Class 3, Valid Medical--w/ waivers/lim
Seat
Left
Flight hours
207 total · 150 in this make and model · 170 as pilot in command · 17 in the last 90 days · 9 in the last 30 days

Weather

Conditions
Visual (VMC) · Day
Wind
90° at 5 knots, gusting 20
Visibility
10 statute miles
Lowest ceiling
4,000 ft broken
Temperature
39 °F

FAA reports on this event · 1

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