ATL05LA076

NTSB accident investigation · Piper PA-20 · Thomaston, GA · April 28, 2005

Accident · No injuriesLimited investigationFinal report
Date
April 28, 2005, 09:35 local (13:35 UTC)
Place
Thomaston, GA
Injuries
2 uninjured
Damage
Substantial damage
Phase of flight
Landing
Aircraft
N7053KPiper PA-20
Weather
Visual (VMC) · Day
Status
Completed · report January 31, 2006
Report
Approved by Office Director
Parties
FAA Atlanta FSDO - 11
FAA report
20050428009069A
Case key
61378

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 unapproved repair of the tailwheel rudder arm assembly, which resulted in an overload failure during touchdown and subsequent loss of control of the airplane and on-ground collision with an object.

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.

Airframe/component/system failure/malfunctionLanding - flare/touchdown
Landing gear,tailwheel assembly - fractured
Maintenance - not approvedOther maintenance personnelCause
Landing gear,tailwheel assembly - overload
Loss of control - on ground/waterLanding - roll
Aircraft control - not possiblePilot in command
On ground/water collision with objectLanding - roll
Object - vasi light/system

Analysis

The pilot stated the main wheels touched down normally; when the tailwheel touched down, the airplane pulled hard to the left, and application of the rudder had no effect. The airplane continued left off the side of the runway and collided with a lighting system. The tailwheel rudder arm assembly was found fractured and separated on the right side, and evidence of a previous weld repair inboard of the fracture was observed. The weld repair was observed at the thickest area of the tapered rudder arm assembly, and the fracture was observed at a smaller-diameter area. Metallurgical examination of the rudder arm assembly revealed the aluminum component showed deformation near the fracture surfaces with no evidence of fatigue.

Factual narrative

On April 28, 2005, at 0935 eastern daylight time, a Piper PA-20, N7053K, registered to Matlad, Inc., and operated by the airline transport pilot, veered off the runway during landing roll at Thomaston - Upson County Airport, Thomaston, Georgia. The personal flight was operated under the provisions of Title 14 CFR Part 91 with no flight plan filed. Visual meteorological conditions prevailed. The airline transport pilot and the passenger were not injured, and the airplane sustained substantial damage. The flight departed Aiken Municipal Airport, Aiken, South Carolina, about 0815.

The pilot stated the approach to runway 30 was normal, and the main wheels touched down normally. The pilot stated that, when the tailwheel touched down, the airplane pulled hard to the left, application of the rudder had no effect, and the airplane continued left off the side of the runway. The airplane continued through the grass, and the empennage collided with the runway's precision approach path indicator lights.

Examination of the airplane revealed damage to the empennage and fuselage. The tailwheel rudder arm assembly was found fractured and separated on the right side, and evidence of a previous weld repair outboard of the fracture was observed. The weld repair was observed at the thickest area of the tapered rudder arm, and the fracture was observed at a smaller-diameter area. Metallurgical examination of the rudder arm revealed the aluminum component showed deformation near the fracture surfaces with no evidence of fatigue.

The pilot stated he had purchased the airplane two days before the accident, and the airplane had accumulated approximately 1.9 hours since annual inspection. Review of maintenance records for the airplane revealed no record of the rudder arm assembly repair.

Aircraft

Registration
N7053K
Reported as
Piper PA-20
Category
Airplane
Serial number
20-160
Airframe hours
1,631.9
Engine
Lycoming O-290-D2, 135 horsepower, reciprocating
Damage
Substantial damage
Flight
Personal · Part 91
Airworthiness certificate
Standard, Normal
Last inspection
Annual · April 1, 2005 · 1.9 hours before
Departed
KAIK · Aiken, SC
Destination
KOPN · Thomaston, GA
Airport
KOPN · Thomaston - Upson County, runway 30, 5,701 × 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
50
Injuries
None
Certificates
Commercial, Airline transport
Airplane ratings
Single-engine land, Multi-engine land
Instrument ratings
Airplane
Medical
Class 1, With waivers/limitations
Last flight review
March 1, 2005
Seat
Left
Flight hours
7,500 total · 50 in this make and model · 7,300 as pilot in command · 160 in the last 90 days · 69 in the last 30 days · 2 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
60° at 3 knots
Visibility
10 statute miles
Lowest ceiling
None
Temperature
63 °F, dew point 37 °F
Altimeter
30.14 inHg
Observed at
KOPN

FAA reports on this event · 1

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