CEN15CA029

NTSB accident investigation · Doubleday Donald Thorp TS-18CW · Reklaw, TX · October 25, 2014

Accident · No injuriesData collectionFinal report
Date
October 25, 2014, 11:15 local (16:15 UTC)
Place
Reklaw, TX
Injuries
1 uninjured
Damage
Substantial damage
Phase of flight
Landing
Aircraft
N18DDDoubleday Donald Thorp TS-18CW
Defining event
Landing: Runway excursion
Weather
Visual (VMC) · Day
Status
Completed · report March 10, 2015
Report
Approved by Office Director
NTSB office
Central Region
Parties
FAA FSDO
FAA report
20141025022489A
Case key
90307

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 monitoring of the airplane's approach path which resulted in long landing and a subsequent runway excursion. Contributing to the accident was the pilot's delayed decision to apply the brakes, inflight traffic, and nearby pedestrians.

Findings · 5

NTSB’s coded findings. Those marked are part of the probable cause; the rest are factors or other findings. Under each, the cases with the same finding.

Performance/control parameters: descent/approach/glide pathAircraft › Aircraft oper/perf/capability · Not attained/maintainedDoubleday Donald THORP=TS-18CW: 1 caseAll aircraft: 809 casesProbable cause
Aircraft capability: landing distanceAircraft › Aircraft oper/perf/capability · Capability exceededDoubleday Donald THORP=TS-18CW: 1 caseAll aircraft: 68 casesProbable cause
Action: delayed actionPersonnel issues › Action/decision · PilotDoubleday Donald THORP=TS-18CW: 1 caseAll aircraft: 894 casesProbable cause
Object/animal/substance: aircraftEnvironmental issues › Physical environment · Effect on operationDoubleday Donald THORP=TS-18CW: 1 caseAll aircraft: 116 casesProbable cause
Object/animal/substance: personEnvironmental issues › Physical environment · Effect on operationDoubleday Donald THORP=TS-18CW: 1 caseAll aircraft: 17 casesProbable cause

Sequence of events

The events NTSB coded, in order, by phase of flight. The defining event is the one that best describes the accident. Under each, the cases with the same event anywhere in their sequence.

Analysis

While attempting to land at a 4,000 foot long turf, private strip for a local fly-in, the accident pilot radioed his intention to land the runway. The pilot of airplane behind that accident pilot radioed his intention to perform a fly-by of the runway. The accident pilot landed long on the runway and decided to abort the landing. The trailing airplane was now overhead the accident pilot, so he delayed his takeoff. More airplane were flying overhead so the pilot decided to continue with the rollout. He assessed that the ground loop might injure nearby pedestrians, so he applied brakes, but the airplane did not stop before exiting the end of the strip into a stock tank. Substantial damage was sustained to the right wing. On the submitted report, the pilot stated that the accident could have been prevented if an air boss had been present to deconflict traffic.

Factual narrative

While attempting to land at a 4,000 foot long turf, private strip for a local fly-in, the accident pilot radioed his intention to land the runway. The pilot of airplane behind that accident pilot radioed his intention to perform a fly-by of the runway. The accident pilot landed long on the runway and decided to abort the landing. The trailing airplane was now overhead the accident pilot, so he delayed his takeoff. More airplane were flying overhead so the pilot decided to continue with the rollout. He assessed that the ground loop might injure nearby pedestrians, so he applied brakes, but the airplane did not stop before exiting the end of the strip into a stock tank. Substantial damage was sustained to the right wing. On the submitted report, the pilot stated that the accident could have been prevented if an air boss had been present to deconflict traffic.

Aircraft

Registration
N18DD
Reported as
Doubleday Donald Thorp TS-18CW
Category
Airplane, amateur-built
Serial number
003
Built
2010
Airframe hours
153.5
Engine
Lycoming O-360-A3A, 180 horsepower, reciprocating
Damage
Substantial damage
Flight
Personal · Part 91
Operator
Doubleday Donald
Registered owner
Doubleday Donald
Airworthiness certificate
Special, Experimental (Special)
Last inspection
Condition · December 19, 2013 · 61.7 hours before
Departed
WEA · Weatherford, TX
Destination
7TA7 · Reklaw, TX
Airport
7TA7 · Flying M Ranch, runway 20, 4,000 × 50 ft, grass/turf

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
68
Injuries
None
Certificate
Commercial
Airplane ratings
Multi-engine land, Single-engine land
Instrument ratings
Airplane
Medical
Class 2, With waivers/limitations
Last flight review
June 7, 2014
Seat
Left
Restraint
3-point
Flight hours
485 total · 212 in this make and model · 364 as pilot in command · 27 in the last 90 days · 15 in the last 30 days · 1 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
250° at 8 knots
Visibility
10 statute miles
Lowest ceiling
None
Temperature
73 °F, dew point 57 °F
Altimeter
30.20 inHg
Observed at
KJSO, 13 nm away

Docket · 1

The files NTSB released with the investigation on March 9, 2015, on NTSB’s docket system: statements, records, photos and specialists’ reports. 3.8 MB in all.

FAA reports on this event · 1

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