DEN00LA162

NTSB accident investigation · Aviat A-1 · Laramie, WY · September 3, 2000

Accident · Minor injuriesLimited investigationFinal report
Date
September 3, 2000, 12:00 local (18:00 UTC)
Place
Laramie, WY
Injuries
1 minor
Damage
Substantial damage
Phase of flight
Landing
Aircraft
N63FEAviat A-1
Weather
Visual (VMC) · Day
Status
Completed · report March 2, 2001
Report
Approved by Office Director
FAA report
20000903013299A
Case key
50177

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 failure to maintain directional control. A factor was his improper inflight decision in selecting a less-than-favorable runway on which to land that resulted in a ground loop.

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
In-flight planning/decision - improperPilot in commandFactor
Wrong runway - selectedPilot in commandFactor
Directional control - not maintainedPilot in commandCause
Weather condition - crosswindFactor
Nose overLanding - roll
Ground loop/swervePilot in command

Analysis

The pilot was attempting to land on runway 30. Recorded wind was 200 degrees at 14 knots. Directional control was lost and the airplane 'ground looped and tipped upside down.' According to Aviat Aircraft, Inc., the A-1's maximum demonstrated crosswind component is 15 mph (13 knots). Consulting the Crosswind Component Chart, it was determined that the pilot was confronted with an almost direct left crosswind (10 degree left quartering tailwind). Under these circumstances, there was a tailwind component of 2 knots and a crosswind component of 13 knots, less than the maximum crosswind component specified by the manufacturer. In addition to runways 12-30, the airport has a second, and longer, runway: 03-21. Landing on runway 21 would have presented a 10 degree left crosswind, and would have provided a 13 knot headwind component and a 2 knot crosswind component.

Factual narrative

On September 3, 2000, approximately 1200 mountain daylight time, an Aviat A-1, N63FE, registered to and operated by the pilot, was substantially damaged when it collided with terrain while landing at Laramie Regional Airport, Laramie, Wyoming. The private pilot and sole occupant received minor injuries. 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 Jackson, Wyoming, approximately 0900.

The pilot stated that he was attempting a landing on runway 30 with a left crosswind. Recorded wind was 200 degrees at 14 knots. The pilot said he lost control and the airplane "ground looped and tipped upside down." The airplane came to a rest in the center of the runway.

According to Aviat Aircraft, Inc., the A-1's maximum demonstrated crosswind component is 15 mph (13 knots). Consulting the Crosswind Component Chart, it was determined that the pilot was attempting to land with an almost direct left crosswind (10 degree left quartering tailwind). These circumstances provided a tailwind component of 2 knots and a crosswind component of 13 knots, less than the maximum crosswind component specified by the manufacturer.

In addition to runways 12-30, Laramie Regional Airport has a second, and longer, runway: 03-21. Landing on runway 21 would have presented a 10 degree left crosswind, and would have provided a 13 knot headwind component and a 2 knot crosswind component (see Crosswind Component Chart).

Aircraft

Registration
N63FE
Reported as
Aviat A-1
Category
Airplane
Serial number
1225
Airframe hours
480
Engine
Lycoming O-360-C1G, 180 horsepower, reciprocating
Damage
Substantial damage
Flight
Personal · Part 91
Registered owner
Richard H. Skjerven
Airworthiness certificate
Standard, Normal
Last inspection
Annual · June 13, 2000 · 30 hours before
Departed
JAC · Jackson, WY
Destination
LAR
Airport
LAR · Laramie, runway 30, 6,300 × 100 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
63
Certificate
Private
Airplane ratings
Single-engine land
Medical
Class 3, Valid Medical--w/ waivers/lim
Seat
Front
Flight hours
271 total · 239 in this make and model · 23 in the last 90 days · 4 in the last 30 days · 3 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
200° at 14 knots
Visibility
50 statute miles
Lowest ceiling
None
Temperature
73 °F, dew point 27 °F
Altimeter
30.00 inHg
Observed at
LAR

FAA reports on this event · 1

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