SEA96LA156

NTSB accident investigation · Stinson 108-1 · Arock, OR · July 12, 1996

Accident · No injuriesLimited investigationFinal report
Date
July 11, 1996, 19:30 local (Jul 12, 1996, 01:30 UTC)
Place
Arock, OR
Injuries
3 uninjured
Damage
Substantial damage
Phase of flight
Landing
Aircraft
N8692KStinson 108-1
Weather
Visual (VMC) · Day
Status
Completed · report May 23, 1997
Report
Approved by Office Director
FAA report
19960711047589A
Case key
42419

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

failure of the pilot to maintain directional control of the aircraft during the landing, which resulted in an inadvertent ground loop. The tailwind was a related factor.

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.

Loss of control - on ground/waterLanding - roll
Weather condition - tailwindFactor
Directional control - not maintainedPilot in commandCause
Ground loop/swerve - inadvertentPilot in commandCause
Main gear collapsedLanding - roll
Landing gear,main gear - overload

Analysis

The pilot reported that approximately one hour after departure, her four year old daughter needed to go to the bathroom. The pilot decided to land the airplane on a flat dry lake bed. She stated that there was nothing around to indicate the wind direction. After conversing with her husband, who was also a pilot, they decided to land to the west. During the landing roll, the airplane began to ground loop. The pilot tried to make corrections; however, the left main landing gear collapsed, and the left wing contacted the surface. The pilot reported that after the accident, the wind was blowing from the east at approximately ten knots.

Factual narrative

On July 11, 1996, at 1930 mountain daylight time, a Stinson 108-1, N8692K, operated by the pilot as a 14 CFR Part 91 personal flight, collided with the terrain while landing on a dry lake bed located 33 miles southwest of Arock, Oregon. Visual meteorological conditions prevailed at the time and a visual flight rules flight plan was filed. The airplane was substantially damaged and the private pilot and her two passengers were not injured. The flight had originated from Nampa, Idaho about one hour prior to the accident.

The pilot reported that a landing was made to a dry lake bed because her four year old daughter (rear seat passenger) needed to go to the bathroom. The pilot stated that the terrain was completely flat and there was nothing around to determine the wind direction. After conversing with her husband, who is also a pilot, they decided that the wind was coming out of the west and the approach and landing was made to the west. After touch down, the airplane began to ground loop. The pilot started to make corrections, however, the left landing gear collapsed and the left wing contacted the ground. After the accident, the pilot reported that the wind direction was from 70 degrees at ten knots.

Aircraft

Registration
N8692K
Reported as
Stinson 108-1
Category
Airplane
Serial number
108-1692
Airframe hours
2,649
Engine
Franklin 6A4-165-B3, 165 horsepower, reciprocating
Damage
Substantial damage
Flight
Personal · Part 91
Operator
Leanne T. Jopson
Registered owner
Charles M. Jopson
Airworthiness certificate
Standard, Normal
Last inspection
Annual · July 2, 1996 · 2 hours before
Departed
S67 · Nampa, ID
Destination
O89 · Fall River Mill, CA
Flight plan
VFR

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
37
Certificate
Private
Airplane ratings
Single-engine land
Medical
Class 3, Valid Medical--w/ waivers/lim
Seat
Left
Flight hours
325 total · 310 in this make and model

Weather

Conditions
Visual (VMC) · Day
Wind
70° at 10 knots
Visibility
50 statute miles
Lowest ceiling
None
Temperature
90 °F

FAA reports on this event · 1

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