ERA16CA259

NTSB accident investigation · Hirn Associates Zodiac CH601XL · Hedgesville, WV · July 17, 2016

Accident · Minor injuriesData collectionFinal report
Date
July 17, 2016, 11:30 local (15:30 UTC)
Place
Hedgesville, WV
Injuries
1 minor
Damage
Substantial damage
Phase of flight
Takeoff
Aircraft
N650WPHirn Associates Zodiac CH601XL
Defining event
Takeoff: Loss of control in flight
Weather
Visual (VMC) · Day
Status
Completed · report September 7, 2017
Report
Approved by Office Director
NTSB office
Eastern Region Aviation
Parties
FAA FSDO
FAA report
20160717012899A
Case key
93618

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 inadvertent activation of the elevator trim, which resulted in a premature takeoff and subsequent loss of airplane control and collision with trees.

Findings · 4

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: directional controlAircraft › Aircraft oper/perf/capability · Not attained/maintainedHirn Associates ZODIAC CH601XL: 1 caseAll aircraft: 3,958 casesProbable cause
Flight control system: elevator tab control systemAircraft › Aircraft systems · Unintentional use/operationHirn Associates ZODIAC CH601XL: 1 caseAll aircraft: 37 casesProbable cause
Object/animal/substance: tree(s)Environmental issues › Physical environment · Contributed to outcomeHirn Associates ZODIAC CH601XL: 1 caseAll aircraft: 933 cases

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

The pilot of the experimental, amateur-built airplane reported that, during the takeoff roll while about 35 knots, he realized that he forgot to turn on the airplane's anticollision lights. He reached over to turn them on, and his forearm brushed across the top of the control stick and activated the electric trim to a full, nose-up position. The airplane suddenly climbed in a steep, nose-high attitude to about 60 ft before it started to roll left toward trees. As the airplane rolled left, the pilot attempted to compensate with right rudder and aileron input, but it had little effect on directional control, so he chose to turn back to the left and try to climb over the trees. The airplane impacted the top of the tree canopy then descended through the trees and impacted the ground. The wings and fuselage were substantially damaged. The pilot reported no preimpact mechanical failures or malfunctions with the airplane that would have precluded normal operation.

Factual narrative

The pilot of the experimental amateur-built airplane reported that during the takeoff roll at approximately 35 knots, he realized that he forgot to turn on the airplane's anti-collision lights. He reached over to turn them on and his forearm brushed across the top of the control stick and activated the electric trim to a full nose up position. The airplane suddenly climbed off the runway in a steep nose high attitude to an altitude of about 60 ft before it started a roll to the left towards trees. As the airplane rolled left, the pilot attempted to compensate with right rudder and aileron input, but it had little effect on directional control, so he elected to turn back to the left and try to climb over the trees. The airplane impacted the top of the tree canopy then descended through the trees and impacted the ground. The wings and fuselage were substantially damaged. The pilot reported no preimpact mechanical failures or malfunctions with the airplane that would have precluded normal operation.

Aircraft

Registration
N650WP
Reported as
Hirn Associates Zodiac CH601XL
Category
Airplane, amateur-built
Serial number
6-7152
Built
2011
Airframe hours
100.4
Engine
Jabiru 3300A, 120 horsepower, reciprocating
Damage
Substantial damage
Flight
Personal · Part 91
Airworthiness certificate
Special, Experimental (Special); Standard, Normal
Last inspection
Annual · July 9, 2016
Departed
WV22 · Hedgesville, WV
Destination
WV22 · Hedgesville, WV
Airport
WV22 · Green Landings, runway 3, 2,600 × 100 ft, grass/turf
Equipment
Stall warning system, Auto-pilot, Electronic primary flight display

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
80
Injuries
Minor
Certificate
Private
Airplane ratings
Single-engine land, Multi-engine land
Medical
Class 3, With waivers/limitations
Seat
Left
Restraint
4-point

Weather

Conditions
Visual (VMC) · Day
Wind
320° at 8 knots
Visibility
10 statute miles
Lowest ceiling
None
Temperature
88 °F, dew point 61 °F
Altimeter
30.17 inHg
Observed at
MRB, 10 nm away

Docket · 3

The files NTSB released with the investigation on August 21, 2017, on NTSB’s docket system: statements, records, photos and specialists’ reports. 2.5 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.