FTW98LA308

NTSB accident investigation · Piper PA-20-160 · Kemmerer, WY · July 2, 1998

Accident · No injuriesLimited investigationFinal report
Date
July 2, 1998, 10:00 local (16:00 UTC)
Place
Kemmerer, WY
Injuries
1 uninjured
Damage
Substantial damage
Phase of flight
Landing
Aircraft
N8933DPiper PA-20-160
Weather
Visual (VMC) · Day
Status
Completed · report February 15, 2001
Report
Approved by Office Director
FAA report
19980702017069A
Case key
43163

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 of the airplane, resulting in a ground loop. A factor was the pilot's lack of experience in a conventional landing gear type of airplane.

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
Directional control - not maintainedPilot in commandCause
Lack of total experience in type of aircraftPilot in commandFactor
On ground/water encounter with terrain/waterLanding - roll
Ground loop/swerve - uncontrolledPilot in commandCause
Airport facilities,runway/landing area condition - runway

Analysis

The pilot said he 'let the airplane get ahead' of him. He landed in light and variable winds and during the rollout, the airplane began 'fishtailing' and ground looped. In his accident report, the pilot said the airplane touched down on runway 34 and the tail veered to the left. He responded with left rudder input. The tail then swerved to the right and he responded with full right rudder and brake and directional control was lost. He indicated the wind was calm. The pilot reported he had 9 hours in airplane make and model.

Factual narrative

On July 2, 1998, approximately 1000 mountain daylight time, N8933D, a Piper PA-20-160 (converted from a PA-22-160), was substantially damaged when it collided with terrain during landing at Kemmerer, Wyoming. The private pilot, the sole occupant aboard, was not injured. Visual meteorological conditions prevailed, and no flight plan was filed for the personal flight being operated under Title 14 CFR Part 91. The flight originated at a private airstrip at Farson, Wyoming, approximately 0930.

In a telephone interview with the pilot, he said he "let the airplane get ahead" of him. He landed in light and variable winds and during the rollout, the airplane began "fishtailing" and ground looped.

According to the pilot's accident report, the airplane touched down on runway 34 and the tail veered to the left. He responded with left rudder input. The tail then swerved to the right and he responded with full right rudder and brake and directional control was lost. The pilot indicated he had 9 hours in airplane make and model.

The pilot did not immediately report the accident. According to the sheriff, he noticed the damaged airplane during a routine patrol. When an FAA inspector went to investigate, the airplane was gone. After the pilot was located by the FAA, the pilot contacted NTSB on July 13. He was asked to explain why the accident was not reported expeditiously to the nearest NTSB office. He did not answer the question.

Aircraft

Registration
N8933D
Reported as
Piper PA-20-160
Category
Airplane
Serial number
22-6091
Airframe hours
3,723
Engine
Lycoming O-320-B2A, 160 horsepower, reciprocating
Damage
Substantial damage
Flight
Personal · Part 91
Registered owner
Leland P. Grandy
Airworthiness certificate
Standard, Normal
Last inspection
Annual · February 3, 1998 · 59 hours before
Departed
NONE · Farson, WY
Destination
EMM
Airport
EMM · Kemmerer Municipal, runway 34, 8,200 × 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
34
Certificate
Private
Airplane ratings
Single-engine land
Medical
Class 3, Valid Medical--no waivers/lim.
Seat
Left
Flight hours
68 total · 9 in this make and model · 46 as pilot in command · 9 in the last 90 days · 9 in the last 30 days · 1 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
Calm
Visibility
30 statute miles
Lowest ceiling
None
Temperature
75 °F

FAA reports on this event · 1

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