- Date
- July 2, 2017, 17:00 local (Jul 3, 2017, 00:00 UTC)
- Place
- Rio Vista, CA
- Injuries
- 1 uninjured
- Damage
- Substantial damage
- Phase of flight
- Approach
- Aircraft
- N321MWAmerican General Acft AG5
- Defining event
- Approach-VFR go-around: Loss of control in flight
- Weather
- Visual (VMC) · Day
- Status
- Completed · report September 22, 2017
- Report
- Approved by Office Director
- NTSB office
- General Aviation Accidents
- Parties
- FAA
- FAA report
- 20170702024059A
- Case key
- 95487
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 during a go-around in gusting wind conditions.
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.
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 reported that, during his second low approach, the airplane was stable at 75 knots and full flaps and about 20 ft above ground level (agl). He added, that about 5 to 10 ft agl, he applied full power and began to "slowly" retract the flaps. Encountering what he described as "wind shear," he reported that the airplane became "vertical" and that he lost directional control. He added that he immediately banked to the right and applied full right rudder. Subsequently, the airplane's left wing struck the ground. The airplane came to rest off the right side of the runway. The airplane sustained substantial damage to the left wing. The student pilot reported that there were no preaccident mechanical failures or malfunctions with the airplane that would have precluded normal operation. The student pilot reported checking the airport's automated weather observation system, which was reporting wind from 120° at 12 knots, before the approach. He further reported the sky condition as clear, temperature 84°F, dewpoint 53°F, and wind gusts to 20 knots. The pilot selected runway 15. As a recommendation, the student pilot reported that he should have avoided areas with gusts greater than 10 knots.
Factual narrative
The student pilot reported that, during his second low approach, the airplane was stable at 75 knots and full flaps, about 20 ft. above the ground. He added, that about 5 to 10 ft. above the ground, he applied full power and began to "slowly" retract the flaps. Encountering what he described as "wind shear," he reported that, the airplane became "vertical" and he lost directional control. He added that, he immediately banked to the right and applied full right rudder, subsequently, the airplane's left wing struck the ground. The airplane came to rest off the right side of the runway. The airplane sustained substantial damage to the left wing. The student pilot reported that there were no preaccident mechanical failures or malfunctions with the airplane that would have precluded normal operation. The student pilot reported checking the airport's automated weather observation system (AWOS), which was reporting wind from 120° at 12 knots, prior to the approach. He further reported the sky condition as clear, temperature 84°F, dewpoint 53°F, and wind gusts to 20 knots. The pilot selected runway 15. As a recommendation, the student pilot reported that he should have avoided areas with gusts greater than 10 knots.
Aircraft
- Registration
- N321MW
- Reported as
- American General Acft AG5 (B)
- Category
- Airplane
- Serial number
- 10105
- Built
- 1991
- Airframe hours
- 1,880
- Engine
- Lycoming O&VO-360 SER, 180 horsepower, reciprocating
- Damage
- Substantial damage
- Flight
- Personal · Part 91
- Airworthiness certificate
- Standard, Normal; Standard, Utility
- Departed
- CCR · Concord, CA
- Destination
- O88 · Rio Vista, CA
- Airport
- O88 · Rio Vista Muni, runway 15, 2,199 × 60 ft, asphalt
- Equipment
- Electronic flight bag or handheld device, Auto-pilot, ADS-B, Stall warning system, Onboard weather
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
- 58
- Injuries
- None
- Certificate
- Student
- Medical
- Class 3, Waiver time limited special
- Last flight review
- June 12, 2017
- Seat
- Left
- Restraint
- 4-point
- Flight hours
- 210 total · 162 in this make and model · 210 as pilot in command · 31 in the last 90 days · 16 in the last 30 days · 2 in the last 24 hours
Weather
- Conditions
- Visual (VMC) · Day
- Wind
- 240° at 15 knots
- Temperature
- 82 °F, dew point 55 °F
- Altimeter
- 29.84 inHg
- Observed at
- KSUU, 12 nm away
Docket · 2
The files NTSB released with the investigation on August 31, 2017, on NTSB’s docket system: statements, records, photos and specialists’ reports. 2.3 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.