ANC98LA117

NTSB accident investigation · Stinson 108-1 · Delta Junction, AK · August 5, 1998

Accident · No injuriesLimited investigationFinal report
Date
August 5, 1998, 10:30 local (18:30 UTC)
Place
Delta Junction, AK
Injuries
2 uninjured
Damage
Substantial damage
Phase of flight
Initial climb
Aircraft
N8835KStinson 108-1
Weather
Visual (VMC) · Day
Status
Completed · report March 30, 2000
Report
Approved by Office Director
NTSB office
Alaska Regional Office
FAA report
19980805019779A
Case key
43643

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 takeoff area. Factors associated with the accident were willow trees, and rising terrain.

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 objectTakeoff - initial climb
Object - tree(s)Factor
Unsuitable terrain or takeoff/landing/taxi area - selectedPilot in commandCause
Terrain condition - risingFactor
In flight collision with terrain/waterDescent - uncontrolled

Analysis

The certificated airline transport pilot was attempting a southwesterly departure from a 750 feet long dry creek bed. He stated that during the takeoff roll, and about 700 feet down the creek bed, he applied 25 degrees of flaps. The airplane became airborne, but failed to gain sufficient altitude to clear rising terrain. The airplane's right wing collided with a stand of trees, pivoting the airplane to the right, and the left wing struck the ground. The airplane's wings, and lower left longeron sustained substantial damage.

Factual narrative

On August 5, 1998, about 1030 Alaska daylight time, a wheel equipped Stinson 108-1 airplane, N8835K, sustained substantial damage during takeoff from an off airport site located about 70 miles southwest of Delta Junction, Alaska. The airplane was being operated as a visual flight rules (VFR) personal flight under Title 14, CFR Part 91, when the accident occurred. The certificated airline transport pilot, and the one passenger aboard were not injured. Visual meteorological conditions prevailed, and no flight plan was filed. The flight was returning to Delta Junction, where it had departed on August 3.

In his written statement to the National Transportation Safety Board (NTSB), the pilot noted that he was attempting a southwesterly departure from a 750 feet long dry creek bed. He stated that during the takeoff roll, and about 700 feet down the creek bed, he applied 25 degrees of flaps. He said that the airplane became airborne, but failed to gain sufficient altitude to clear rising terrain. The airplane's right wing collided with a stand of trees, pivoting the airplane to the right, and the left wing struck the ground.

The airplane's wings, and lower left longeron sustained substantial damage.

The pilot reported that the wind conditions at the time of the accident were light and variable, favoring a southwesterly departure.

Aircraft

Registration
N8835K
Reported as
Stinson 108-1
Category
Airplane
Serial number
108-1835
Airframe hours
2,140
Engine
Franklin 6A4-150-B3, 150 horsepower, reciprocating
Damage
Substantial damage
Flight
Personal · Part 91
Registered owner
Kenneth Albert Couch
Airworthiness certificate
Standard, Normal
Last inspection
Annual · November 19, 1997 · 50 hours before
Destination
D66 · 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
52
Certificates
Commercial, Airline transport
Airplane ratings
Multi-engine land, Single-engine sea, Single-engine land
Instrument ratings
Airplane
Medical
Class 1, Valid Medical--w/ waivers/lim
Seat
Left
Flight hours
20,000 total · 85 in this make and model · 15,400 as pilot in command · 260 in the last 90 days · 99 in the last 30 days

Weather

Conditions
Visual (VMC) · Day
Visibility
10 statute miles
Temperature
45 °F
Altimeter
29.00 inHg

FAA reports on this event · 1

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