LAX06CA144

NTSB accident investigation · Aviat A-1B · Chandler, AZ · April 22, 2006

Accident · No injuriesData collectionFinal report
Date
April 22, 2006, 08:11 local (15:11 UTC)
Place
Chandler, AZ
Injuries
1 uninjured
Damage
Substantial damage
Phase of flight
Landing
Aircraft
N143HPAviat A-1B
Weather
Visual (VMC) · Day
Status
Completed · report August 29, 2006
Report
Approved by Office Director
Parties
Federal Aviation Administration
FAA report
20060422008619A
Case key
63557

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 inadequate compensation for the wind conditions and failure to maintain directional control during the landing rollout. A contributing factor was the pilot's excessive use of the flight controls.

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
Weather condition - crosswindFactor
Compensation for wind conditions - inadequatePilot in commandCause
Weather condition - gustsFactor
Flight controls - improper use ofPilot in commandFactor
Directional control - not maintainedPilot in commandCause
Ground loop/swerve - encounteredPilot in command
On ground/water encounter with terrain/waterLanding - roll
Terrain condition - runway

Analysis

The airplane ground looped upon encountering wind gusts during the landing rollout. The winds were approximately 90 degrees right of the airplane's landing direction at between 8 and 10 knots. The pilot said that when the airplane weather vaned, he applied corrective action that was excessive, and the airplane ground looped.

Factual narrative

On April 22, 2006, about 0811 mountain standard time, an Aviat, A-1B, N143HP, ground looped during landing on runway 04L at the Chandler Municipal Airport, Chandler, Arizona. The airplane was substantially damaged, and the pilot was not injured. The airplane was operated by Chandler Air Service, Inc., during the private pilot's local area personal flight. Visual meteorological conditions prevailed, and no flight plan had been filed. The flight was performed under the provisions of 14 CFR Part 91, and it originated from Chandler about 0745.

The pilot reported to the National Transportation Safety Board investigator that on his fourth touch-and-go, as the airplane's wheels touched down, a "light gust" was encountered that caused the airplane to slightly weather vane. The pilot took corrective action by applying rudder pressure. Then, the airplane yawed violently to the right. The pilot reacted with application of full left rudder pressure and full engine power. The airplane started to straighten its course, but then violently yawed left, veered off the runway and ground looped.

The pilot estimated that the wind was between 130 and 140 degrees, and its speed was between 8 and 10 knots. The pilot indicated to the Safety Board investigator that, during the mishap, he might have overcorrected his control efforts when he encountered the gusts.

Aircraft

Registration
N143HP
Reported as
Aviat A-1B
Category
Airplane
Serial number
NF0007
Engine
Lycoming O-320, reciprocating
Damage
Substantial damage
Flight
Personal · Part 91
Operator
Chandler Air Service
Registered owner
Arizona Flieger Co, LLC
Airworthiness certificate
Standard, Normal
Departed
CHD · Chandler
Destination
CHD · Chandler
Airport
CHD · Chandler Municipal, runway 4L, 4,870 × 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
46
Certificate
Private
Airplane ratings
Single-engine land
Medical
Class 3
Flight hours
362 total · 5 in this make and model · 74 in the last 90 days · 25 in the last 30 days

Weather

Conditions
Visual (VMC) · Day
Wind
130° at 8 knots, gusting 10
Visibility
20 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.