CHI02LA147

NTSB accident investigation · Waco ASO · Goodland, KS · June 2, 2002

Accident · No injuriesLimited investigationFinal report
Date
June 2, 2002, 13:30 local (18:30 UTC)
Place
Goodland, KS
Injuries
2 uninjured
Damage
Substantial damage
Phase of flight
Landing
Aircraft
NC662YWaco ASO
Weather
Visual (VMC) · Day
Status
Completed · report July 2, 2009
Report
Approved by Office Director
Parties
Federal Aviation Administration
Case key
54833

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 tailwheel assembly after touchdown that resulted in loss of airplane directional control, which the pilot could not correct. A contributing factor was the improper assembly of the tailwheel.

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 - flare/touchdown
Landing gear,tailwheel assembly - failureCause
Landing gear - improperOther maintenance personnelFactor
Directional control - not possiblePilot in command
On ground/water encounter with terrain/waterLanding - roll
Terrain condition - dirt bank/rising embankment

Analysis

The airplane was substantially damaged when it veered off the runway during landing. The pilot reported that when the tailwheel touched down, the airplane started to shake and bang and turn left. The airplane departed the left side of the runway and the right lower wing contacted a dirt mound breaking the wing spars. A postaccident teardown of the tailwheel assembly by the manufacturer determined that the tailwheel was not assembled according to the manufacturer's specifications. The teardown inspection determined that the tailwheel "would not function properly because it was incorrectly assembled."

Factual narrative

On June 2, 2002, at 1330 central daylight time, a Waco ASO, NC662Y, piloted by an airline transport pilot, was substantially damaged during landing when it veered off runway 23 (3,501 feet by 75 feet, asphalt) at the Renner Field-Goodland Municipal Airport (GLD), Goodland, Kansas. Visual meteorological conditions prevailed at the time of the accident. The 14 CFR Part 91 personal flight was not operating on a flight plan. The pilot and passenger reported no injuries. The flight originated from the Pratt Industrial Airport, Pratt, Kansas at 1015 and was en route to GLD.

The pilot stated in a written statement, "At tailwheel touchdown aircraft immediately began shaking, banging, and turning to the left. As aircraft slowed the left turning force could not be stopped, even with full right rudder and brake. The aircraft departed the left side of the runway, still turning left. The right lower wing struck a small mound along the side of the runway breaking the spruce wing spars."

The pilot made multiple landings without incident on the same day prior to the accident.

The pilot reported a total time in the accident airplane make and model of 14 hours.

A postaccident teardown of the tailwheel assembly by the manufacturer determined that the tailwheel was not assembled according to the manufacturer’s specifications. The teardown inspection determined that the tailwheel “would not function properly because it was incorrectly assembled.”

Aircraft

Registration
NC662Y
Reported as
Waco ASO
Category
Airplane
Serial number
3228
Airframe hours
1,091
Engine
Wright R-760-8, 235 horsepower, reciprocating
Damage
Substantial damage
Flight
Personal · Part 91
Registered owner
David K. Allen
Airworthiness certificate
Standard, Normal
Last inspection
Annual · May 22, 2002 · 13 hours before
Departed
PTT · Pratt, KS
Destination
GLD · Goodland, KS
Airport
GLD · Renner Fld /Goodland Municipal, runway 23, 3,501 × 75 ft, asphalt

Flight crew

As NTSB recorded them. NTSB leaves out names.

Role
Pilot
Age
56
Injuries
None
Certificates
Flight engineer, Airline transport, Flight instructor
Airplane ratings
Multi-engine land, Single-engine land
Instrument ratings
Airplane
Medical
Class 1, Valid Medical--w/ waivers/lim
Last flight review
May 1, 2001
Seat
Rear
Flight hours
15,000 total · 14 in this make and model · 11,000 as pilot in command · 179 in the last 90 days · 58 in the last 30 days · 5 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
240° at 9 knots
Visibility
10 statute miles
Lowest ceiling
None
Temperature
95 °F, dew point 45 °F
Altimeter
26.68 inHg
Observed at
KGLD

Docket · 3

The files NTSB released with the investigation on August 9, 2002, on NTSB’s docket system: statements, records, photos and specialists’ reports. 730 KB in all.