GAA18CA484

NTSB accident investigation · Airgyro Tercel · Spanish Fork, UT · August 9, 2018

Accident · Minor injuriesData collectionFinal report
Date
August 9, 2018, 11:30 local (17:30 UTC)
Place
Spanish Fork, UT
Injuries
1 minor
Damage
Substantial damage
Phase of flight
Takeoff
Aircraft
N557ATAirgyro Tercel
Defining event
Takeoff: Abrupt maneuver
Weather
Visual (VMC) · Day
Status
Completed · report March 18, 2019
Report
Approved by Office Director
NTSB office
General Aviation Accidents
Parties
FAA
FAA report
20180809010519A
Case key
98052

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 student pilot’s failure to maintain pitch and yaw control during takeoff.

Findings · 3

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: pitch controlAircraft › Aircraft oper/perf/capability · Not attained/maintainedAirgyro TERCEL: 1 caseAll aircraft: 526 casesProbable cause
Performance/control parameters: yaw controlAircraft › Aircraft oper/perf/capability · Not attained/maintainedAirgyro TERCEL: 1 caseAll aircraft: 149 casesProbable cause
Use of equip/info: aircraft controlPersonnel issues › Task performance · Student/instructed pilotAirgyro TERCEL: 1 caseAll aircraft: 9,295 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

The solo student pilot of the gyroplane reported that, during takeoff, he pulled the stick back and advanced the throttle to full. He accelerated and noticed "there was no tendency for the nose to rise," so he applied back pressure, and the gyroplane immediately turned left, rolled onto its side, and skidded off the runway to the left. The gyroplane sustained substantial damage to the main rotor, fuselage, and empennage. The student reported that there were no preaccident mechanical failures or malfunctions with the gyroplane that would have precluded normal operation. The flight instructor provided a video of the student pilot's accident takeoff. The video showed the gyroplane accelerating down the runway, rapidly pitching up, and immediately rotating to the left before impacting the runway.

Factual narrative

The solo student pilot of the gyroplane reported that, during takeoff, he pulled the stick back and advanced the throttle to full. He accelerated and noticed "there was no tendency for the nose to rise", so he applied back pressure and the gyroplane immediately turned left, rolled onto its side, and skidded off the runway to the left. The gyroplane sustained substantial damage to the main rotor, fuselage, and empennage. The student pilot reported that there were no preaccident mechanical failures or malfunctions with the gyroplane that would have precluded normal operation. The flight instructor provided a video of the student pilot's accident takeoff. The video showed the gyroplane accelerating down the runway, rapidly pitching up, and immediately rotating to the left before impacting the runway.

Aircraft

Registration
N557AT
Reported as
Airgyro Tercel
Category
Gyroplane
Serial number
T&S F26817S
Built
2017
Airframe hours
189
Engine
Rotax 912, 135 horsepower, reciprocating
Damage
Substantial damage
Flight
Instructional · Part 91
Airworthiness certificate
Special, Experimental (Special)
Last inspection
100 hour · June 21, 2018
Departed
SPK · Spanish Fork, UT
Destination
SPK · Spanish Fork, UT
Airport
SPK · Spanish Fork Arpt Springville-, runway 30, 6,500 × 100 ft, asphalt
Equipment
None

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
Student pilot
Age
59
Injuries
Minor
Certificate
Student
Medical
Sport pilot
Seat
Left
Flight hours
27 total · 10 in this make and model · 10 in the last 90 days · 7 in the last 30 days · 1 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
110° at 4 knots
Visibility
2.5 statute miles
Lowest ceiling
None
Temperature
81 °F, dew point 41 °F
Altimeter
30.20 inHg
Observed at
KPVU, 5 nm away

Docket · 3

The files NTSB released with the investigation on October 31, 2018, on NTSB’s docket system: statements, records, photos and specialists’ reports. 5.2 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.