LAX99LA324

NTSB accident investigation · Kilpatrick IV-1200 · Springerville, AZ · August 14, 1999

Accident · No injuriesLimited investigationFinal report
Date
August 14, 1999, 14:00 local (21:00 UTC)
Place
Springerville, AZ
Injuries
2 uninjured
Damage
Substantial damage
Phase of flight
Landing
Aircraft
N843KKilpatrick IV-1200
Weather
Visual (VMC) · Day
Status
Completed · report January 23, 2002
Report
Approved by Office Director
Parties
FAA, FLIGHT STANDARDS DISTRICT OFFICE
FAA report
19990814046879A
Case key
54157

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 resulting in an inadvertent groundloop. A factor was muddy terrain by the runway.

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
Terrain condition - muddyFactor
Ground loop/swerve - inadvertentPilot in commandCause
On ground/water encounter with terrain/waterLanding - roll

Analysis

During the transition to tail down during the landing rollout the airplane veered off the left side of the runway and ground looped. The pilot completed nine touch-and-go landings, and planned to make this landing a full stop. As the airplane left the paved surface, one wheel dug into the wet dirt by the runway and it ground looped, which resulted in substantial damage to the right wing spar.

Factual narrative

On August 14, 1999, about 1400 hours mountain standard time, an experimental Kilpatrick IV-1200, N843K, ground looped during landing at Springerville, Arizona. The commercial pilot/owner was operating the airplane under the provisions of 14 CFR Part 91. The commercial pilot and one passenger were not injured; the airplane sustained substantial damage. The personal local flight departed about 1215. Visual meteorological conditions prevailed, and no flight plan had been filed. On November 20, 2001, the accident came to the attention of the Federal Aviation Administration, Scottsdale Flight Standards District Office, which then notified the Safety Board.

The pilot stated he completed nine touch-and-go landings, and planned to make this landing a full stop. During the transition to tail down during the landing rollout the airplane veered off the left side of the runway. One wheel dug into the wet dirt and the airplane ground looped, which resulted in substantial damage to the right wing spar. The pilot observed clear skies, no precipitation, no obstructions to visibility, and light and variable winds.

Aircraft

Registration
N843K
Reported as
Kilpatrick IV-1200
Category
Airplane, amateur-built
Serial number
LBS086
Engine
Rotax 912, 80 horsepower, reciprocating
Damage
Substantial damage
Flight
Personal · Part 91
Registered owner
Kenneth W. Kilpatrick
Airworthiness certificate
Special, Experimental (Special)
Departed
Q35 · Springerville, AZ
Airport
Q35 · Springerville, runway 21, 8,420 × 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
55
Injuries
None
Certificate
Commercial
Airplane ratings
Single-engine land
Medical
Class 3, Valid Medical--no waivers/lim.
Seat
Left
Flight hours
1,664 total · 1,549 as pilot in command · 30 in the last 90 days · 10 in the last 30 days

Weather

Conditions
Visual (VMC) · Day
Visibility
10 statute miles
Lowest ceiling
None

FAA reports on this event · 1

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