DEN02LA024

NTSB accident investigation · Aviat A-1A · Afton, WY · February 11, 2002

Accident · No injuriesLimited investigationFinal report
Date
February 11, 2002, 13:10 local (20:10 UTC)
Place
Afton, WY
Injuries
2 uninjured
Damage
Substantial damage
Phase of flight
Landing
Aircraft
N29HUAviat A-1A
Weather
Visual (VMC) · Day
Status
Completed · report July 25, 2002
Report
Approved by Office Director
Parties
FAA Flight Standards Field Office
FAA report
20020211002169A
Case key
54174

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 NTSB’s determination of the probable cause, and any contributing factors.

The pilot's failure to maintain directional control, which resulted in a collision with a snow bank. Contributing factors were the icy runway and the snow bank.

Analysis

The pilot said he intentionally landed the airplane slightly right of centerline to avoid a strip of ice on the runway. When the airplane touched down, it started to veer to the right. The pilot corrected by applying left rudder, but "action was not normal." He said his "left foot did not feel positioned right." He then adjusted the positioning of his foot on the rudder pedal. At this point the aircraft was getting close to the east side of the runway, and he corrected back towards the centerline. The right elevator struck a snow bank, and the airplane veered sharply to the right, hit the snow bank and nosed down.

Factual narrative

On February 11, 2002, approximately 1310 mountain standard time, an Aviat A-1A, N29HU, was substantially damaged during landing at Afton Municipal Airport, Afton, Wyoming. The commercial pilot and pilot rated-passenger were not injured. Visual meteorological conditions prevailed, and no flight plan had been filed for the personal flight being conducted under Title 14 CFR Part 91. The flight originated at Afton approximately 1240.

The following is based on a telephone conversation with the pilot and the accident report he submitted. He intentionally landed the airplane slightly right of centerline to avoid a strip of ice on the runway. When the airplane touched down, it started to veer to the right. The pilot said he corrected by applying left rudder, but "action was not normal." He said his "left foot did not feel positioned right." He then adjusted the positioning of his foot on the rudder pedal. At this point the aircraft was getting close to the east side of the runway, and he corrected back towards the centerline. The right elevator struck a snow bank, and the airplane veered sharply to the right, hit the snow bank and nosed down. There was substantial damage to the right elevator and lesser damage to the left wing tip and engine cowling.

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 terrain/waterLanding - roll
Directional control - not maintainedPilot in commandCause
Airport facilities,runway/landing area condition - icyFactor
Terrain condition - snowbankFactor
Nose downLanding - roll

Aircraft

Registration
N29HU
Reported as
Aviat A-1A
Category
Airplane
Serial number
1381
Airframe hours
264
Engine
Lycoming O-360-A1P, 180 horsepower, reciprocating
Damage
Substantial damage
Flight
Personal · Part 91
Registered owner
Boyd L. Eddins
Airworthiness certificate
Standard, Normal
Last inspection
Annual · May 11, 2001 · 11 hours before
Departed
AFO · Afton, WY
Destination
AFO · Afton, WY
Airport
AFO · Afton Municipal, runway AFO, 5,220 × 75 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
68
Injuries
None
Certificate
Commercial
Airplane ratings
Single-engine land
Medical
Class 2, Valid Medical--w/ waivers/lim
Last flight review
September 26, 2000
Seat
Front
Flight hours
6,900 total · 332 in this make and model · 6,900 as pilot in command · 13 in the last 90 days · 3 in the last 30 days

Weather

Conditions
Visual (VMC) · Day
Wind
240° at 7 knots
Visibility
10 statute miles
Lowest ceiling
None
Temperature
36 °F, dew point 14 °F
Altimeter
30.21 inHg
Observed at
JAC, 62 nm away

Docket · 1

The files NTSB released with the investigation on July 3, 2002, on NTSB’s docket system: statements, records, photos and specialists’ reports. 230 KB in all.

FAA reports on this event · 1

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

Other investigations on N29HU · 1

Matched to the same aircraft by N-number and date.