GAA18CA067

NTSB accident investigation · Todd Foley Zenith 701 · Mount Airy, NC · December 1, 2017

Accident · No injuriesData collectionFinal report
Date
December 1, 2017, 16:00 local (21:00 UTC)
Place
Mount Airy, NC
Injuries
1 uninjured
Damage
Substantial damage
Phase of flight
Takeoff
Aircraft
N701TFTodd Foley Zenith 701
Defining event
Takeoff: Loss of control in flight
Weather
Visual (VMC) · Day
Status
Completed · report February 21, 2018
Report
Approved by Office Director
NTSB office
General Aviation Accidents
Parties
FAA
FAA report
20171201022279A
Case key
96414

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 exceedance of the airplane’s critical angle of attack during takeoff, which resulted in an aerodynamic stall.

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: angle of attackAircraft › Aircraft oper/perf/capability · Capability exceededTodd Foley ZENITH 701: 1 caseAll aircraft: 990 casesProbable cause
Use of equip/info: aircraft controlPersonnel issues › Task performance · PilotTodd Foley ZENITH 701: 1 caseAll aircraft: 9,295 casesProbable cause
Performance/control parameters: heading/courseAircraft › Aircraft oper/perf/capability · Not attained/maintainedTodd Foley ZENITH 701: 1 caseAll aircraft: 82 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 takeoff, he raised the nose after reaching about 20 mph, and about 40 mph, the airplane lifted off the runway. He "held the stick back just a little [too] long and it started to tip stall to the left and [he] pushed the stick forward." He added that he applied right aileron and rudder because the airplane was drifting to the left side of the runway. Subsequently, the airplane aerodynamically stalled and bounced on the runway, and the right wheel separated from the airplane. He then, with full power, continued to fly and make right aileron and rudder inputs to get back over the runway. The airplane impacted the ground and came to rest inverted. The airplane sustained substantial damage to the fuselage, empennage, and wings. The automated weather observation system at the accident airport reported that, about the time of the accident, the wind was from 090° at 4 knots. The pilot was departing from runway 18.

Factual narrative

The pilot of the experimental amateur-built airplane reported that, during takeoff, he raised the nose after reaching about 20 miles per hour (mph), and about 40 mph the airplane lifted off the runway. He "held the stick back just a little [too] long and it started to tip stall to the left and [he] pushed the stick forward." He added that he applied right aileron and rudder because the airplane was drifting to the left side of the runway. Subsequently, the airplane aerodynamically stalled, bounced on the runway and the right wheel separated from the airplane. He then, with full power, continued to fly and make right aileron and rudder inputs to get back over the runway. The airplane impacted the ground and came to rest inverted. The airplane sustained substantial damage to the fuselage, empennage and wings. The automated weather observation system at the accident airport reported, that about the time of the accident, the wind was from 090° at 4 knots. The pilot was departing on runway 18.

Aircraft

Registration
N701TF
Reported as
Todd Foley Zenith 701 (NO SERIES)
Category
Airplane, amateur-built
Serial number
4714
Built
2016
Airframe hours
8
Engine
Rotax 912, 100 horsepower, reciprocating
Damage
Substantial damage
Flight
Personal · Part 91
Airworthiness certificate
Special, Experimental (Special)
Last inspection
Annual · November 4, 2017
Departed
MWK · Mount Airy, NC
Destination
MWK · Mount Airy, NC
Airport
MWK · Mount Airy/Surry County, runway 18, 4,301 × 75 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
Pilot
Age
62
Injuries
None
Certificate
Private
Airplane ratings
Single-engine land
Medical
Class 3, With waivers/limitations
Last flight review
August 22, 2016
Seat
Left
Restraint
5-point
Flight hours
185 total · 185 in this make and model · 125 as pilot in command · 3 in the last 90 days · 2 in the last 30 days · 1 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
90° at 4 knots
Visibility
10 statute miles
Lowest ceiling
5,500 ft broken
Temperature
63 °F, dew point 27 °F
Altimeter
30.18 inHg
Observed at
KMWK

Docket · 3

The files NTSB released with the investigation on January 25, 2018, on NTSB’s docket system: statements, records, photos and specialists’ reports. 1.1 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.