- Date
- September 10, 2012, 09:10 local (16:10 UTC)
- Place
- Mobile, AZ
- Injuries
- 1 uninjured
- Damage
- Substantial damage
- Phase of flight
- Takeoff
- Aircraft
- N863AFGrob-Werke G 120A
- Defining event
- Takeoff-rejected takeoff: Loss of control on ground
- Weather
- Visual (VMC) · Day
- Status
- Completed · report December 5, 2012
- Report
- Approved by Office Director
- NTSB office
- Western Pacific Region
- Parties
- Federal Aviation Administration
- FAA report
- 20120910021589A
- Case key
- 84991
From the NTSB’s public API. By law, NTSB reports can’t be used as evidence in lawsuits over the accident.
On this page
Probable cause
The student pilot’s failure to maintain directional control of the airplane during the takeoff roll and the subsequent aborted takeoff in a gusting crosswind.
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.
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 student pilot, who had just completed a full-stop landing and taxied back to the approach end of the runway, started the takeoff roll with a right quartering headwind of about 8 knots. Just as he prepared to takeoff, a wind gust lifted the right wing and the airplane yawed to the left. Although the student applied right aileron and rudder to correct for the gust, the airplane continued toward the left edge of the runway. The student decided to abort the takeoff, reduce the power to idle, and apply the brakes. However, the airplane departed the left side of the runway and collided with a bush, resulting in substantial damage to the left wing. According to the pilot and the operator, there was no indication of any preimpact mechanical malfunction or failure of the airplane.
Factual narrative
The student pilot, who had just completed a full-stop landing and taxied back to the approach end of the runway, started his takeoff roll in a wind of about eight knots, which was coming from about 45 degrees to the right of the nose of the airplane. Just prior to the pilot initiating the rotation, the airplane encountered a wind gust from the right, which resulted in the right wing raising and the airplane yawing to the left. Although the pilot attempted to correct for the gust by applying right aileron and right rudder, the airplane continued toward the left edge of the 75-foot wide runway. The pilot, who therefore decided to abort the takeoff, reduced the power to idle and applied the brakes. During his attempt to bring the airplane to a stop, the airplane departed the left side of the runway, whereupon it collided with a large bush, resulting in substantial damage to the left wing. According to the pilot and the operator, there was no indication of any mechanical malfunction associated with the accident sequence.
Aircraft
- Registration
- N863AF
- Reported as
- Grob-Werke G 120A
- Category
- Airplane
- Serial number
- 85003
- Engine
- Lycoming AEIO-540-D4D5, 260 horsepower, reciprocating
- Damage
- Substantial damage
- Flight
- Instructional · Part 91
- Operator
- International Pilot School
- Registered owner
- Airline Training Center Arizona Inc
- Airworthiness certificate
- Standard, Aerobatic
- Departed
- KGYR · Mobile, AZ
- Destination
- KGYR · Mobile, AZ
- Airport
- 1AZO · Mobile, runway 09, 4,500 × 75 ft, asphalt
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
- 23
- Injuries
- None
- Certificate
- Student
- Medical
- Class 3, With waivers/limitations
- Seat
- Left
- Flight hours
- 53 total · 52 in this make and model
Weather
- Conditions
- Visual (VMC) · Day
- Wind
- 135° at 8 knots
- Visibility
- 10 statute miles
- Lowest ceiling
- None
Docket · 1
The files NTSB released with the investigation on October 5, 2012, on NTSB’s docket system: statements, records, photos and specialists’ reports. 2.7 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.