DEN03LA131

NTSB accident investigation · Stinson 108-3 · Vernal, UT · July 6, 2003

Accident · No injuriesLimited investigationFinal report
Date
July 6, 2003, 10:10 local (16:10 UTC)
Place
Vernal, UT
Injuries
3 uninjured
Damage
Substantial damage
Phase of flight
Landing
Aircraft
N121NStinson 108-3
Weather
Visual (VMC) · Day
Status
Completed · report December 30, 2003
Report
Approved by Office Director
Parties
FAA Flight Standards District Office
FAA report
20030706013679A
Case key
57502

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 improper recovery from a bounced landing, and his failure to maintain directional control during landing that resulted in an inadvertent ground loop/swerve.

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
Recovery from bounced landing - improperPilot in commandCause
Directional control - not maintainedPilot in commandCause
Dragged wing,rotor,pod,float or tail/skidLanding - roll
Ground loop/swerve - inadvertent

Analysis

The pilot was landing on runway 34. The tail wheel touched down first and the airplane bounced on its main landing gear. The pilot "overcorrected first right, then left," and the airplane skidded "with the left wing down" and went off the left side of the runway. Postaccident examination revealed the top left wing skin was wrinkled and several ribs were damaged. The AWOS observation indicated the wind was calm.

Factual narrative

On July 6, 2003, approximately 1010 mountain daylight time, a Stinson 108-3, N121N, was substantially damaged when it impacted terrain at Vernal Airport, Vernal, Utah. The private pilot and his three passengers were uninjured. Visual meteorological conditions prevailed, and a VFR flight plan had been filed for the personal cross-country flight being conducted under Title 14 CFR Part 91. The flight originated at Fort Collins, Colorado, approximately 0730.

According to the pilot's accident report, he was landing on runway 34. The tail wheel touched down first and the airplane bounced on its main landing gear. The pilot "overcorrected first right, then left," and the airplane skidded "with the left wing down" and went off the left side of the runway. Postaccident examination revealed the top left wing skin was wrinkled and several ribs were damaged.

The 0953 AWOS observation at Vernal, Utah, indicated the wind was calm.

Aircraft

Registration
N121N
Reported as
Stinson 108-3
Category
Airplane
Serial number
108-4449
Airframe hours
2,798
Engine
Franklin 6A4-165-B3, 165 horsepower, reciprocating
Damage
Substantial damage
Flight
Personal · Part 91
Registered owner
Paul J. Foster
Airworthiness certificate
Standard, Utility
Last inspection
Annual · June 14, 2003 · 19 hours before
Departed
3V5 · Fort Collins, CO
Destination
VEL · Vernal, UT
Flight plan
VFR
Airport
VEL · Vernal, runway 34, 6,200 × 150 ft, asphalt

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
55
Injuries
None
Certificate
Private
Airplane ratings
Single-engine land
Medical
Class 3, Valid Medical--w/ waivers/lim
Last flight review
September 14, 2002
Seat
Left
Flight hours
830 total · 78 in this make and model · 686 as pilot in command · 23 in the last 90 days · 19 in the last 30 days · 5 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
Calm
Visibility
10 statute miles
Lowest ceiling
None
Temperature
79 °F, dew point 39 °F
Altimeter
30.01 inHg
Observed at
VEL

FAA reports on this event · 1

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