- Date
- June 1, 2022, 12:15 local (17:15 UTC)
- Place
- River Falls, WI
- Injuries
- 1 serious, 1 minor
- Damage
- Substantial damage
- Phase of flight
- Approach
- Aircraft
- N6298LGrumman American Avn. AA-1B
- Defining event
- Approach-VFR pattern base: Fuel exhaustion
- Weather
- Visual (VMC) · Day
- Status
- Completed
- Report
- Approved by Office Director
- Investigation class
- Class 3
- NTSB office
- Central Region
- Parties
- FAA FSDO
- FAA report
- 20220601009939A
- Case key
- 105171
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 and flight instructor’s inadequate preflight fuel planning, which resulted in a total loss of engine power due to fuel exhaustion.
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 flight instructor and student pilot reported problems with the airplane’s engine shortly after takeoff. The flight instructor stated that the engine “quit abruptly” and “seized,” and the student pilot stated that the engine “locked up” and lost total power. The flight instructor assumed control of the airplane and made a forced landing in a field, which resulted in substantial damage to the airplane’s left wing. Postaccident examination of the airplane revealed no fuel remaining in the wing tanks and no evidence of a fuel spill. The fuel system was not compromised. According to the accident report submitted by the flight instructor they departed with 8 gallons of fuel and were flying for about 1 hour and 15 minutes. Postaccident examination revealed that the engine rotated freely, and compression was verified on all cylinders. Both magnetos produced spark when rotated. Thus, the engine likely lost power due to fuel exhaustion.
Factual narrative
On June 1, 2022, about 1215 central daylight time, a Grumman AA-1B airplane, N6298L, was substantially damaged when it was involved in an accident near St. Croix Riviera Airport (6WI2), River Falls, Wisconsin. The student pilot sustained minor injuries, and the flight instructor sustained serious injuries. The airplane was operated as a Title 14 Code of Federal Regulations Part 91 instructional flight. The flight instructor reported that, during the accident flight, he and the student pilot performed two takeoffs and landings and that, on the third takeoff, the engine “quit abruptly” at an altitude of about 150 ft. The flight instructor stated that the engine appeared to have “seized instantly.” The student pilot reported that, during the initial climb after takeoff and when the airplane was about 150 to 200 ft above ground level, the engine “locked up” and lost total power. At that time, the flight instructor assumed control of the airplane and made a forced landing to a vacant field south of the airport, which was straight ahead of the departure runway. The airplane came to rest upright in the field, which resulted in substantial damage to the left outboard wing panel. Examination of the airplane at the accident scene found no fuel in the wing fuel tanks. A subsequent examination revealed that the fuel tanks were not breached and that the other fuel system components had no discrepancies. According to the accident report submitted by the flight instructor they departed with 8 gallons of fuel and were flying for about 1 hour and 15 minutes. The engine rotated freely, and compression was verified on all cylinders. Both magnetos produced spark when rotated.
Aircraft
- Registration
- N6298L
- Reported as
- Grumman American Avn. AA-1B
- Category
- Airplane
- Serial number
- AA1B0098
- Built
- 1972
- Airframe hours
- 2,986
- Engine
- Lycoming O-320, 150 hp, reciprocating
- Damage
- Substantial damage
- Flight
- Instructional · Part 91
- Registered owner
- Jft LLC
- Airworthiness certificate
- Standard, Normal
- Last inspection
- Annual · November 19, 2021
- Departed
- 6WI2 · River Falls, WI
- Airport
- 6WI2 · St Croix Riviera, runway 13, 1,700 × 100 ft, grass/turf
- Equipment
- Stall warning system, ADS-B
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 · 2
As NTSB recorded them. NTSB leaves out names.
- Role
- Flight instructor
- Age
- 60
- Injuries
- Serious
- Certificates
- Airline transport, Flight instructor, Commercial
- Airplane ratings
- Multi-engine land, Single-engine land
- Instrument ratings
- Airplane
- Medical
- Class 1, Without waivers/limitations
- Seat
- Right
- Restraint
- Lap only
- Flight hours
- 14,500 total · 10 in this make and model
- Role
- Student pilot
- Age
- 39
- Injuries
- None
- Certificate
- Student
- Medical
- Class 3, With waivers/limitations
- Seat
- Left
- Restraint
- Lap only
- Flight hours
- 38 total · 38 in this make and model · 5 as pilot in command · 29 in the last 90 days · 15 in the last 30 days · 2 in the last 24 hours
Weather
- Conditions
- Visual (VMC) · Day
- Wind
- Variable at 4 knots
- Visibility
- 10 statute miles
- Temperature
- 66 °F, dew point 45 °F
- Altimeter
- 30.06 inHg
- Observed at
- KSTP, 14 nm away
- METAR
- SPECI KSTP 011203Z 00000KT 10SM BKN025 12/09 A3009 RMK AO2 T01220094= METAR KSTP 011653Z VRB04KT 10SM SCT050 19/07 A3006 RMK AO2 SLP177 T01890072=
Docket · 5
The files NTSB released with the investigation on November 8, 2023, on NTSB’s docket system: statements, records, photos and specialists’ reports. 40.3 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.
Other investigations on N6298L · 1
Matched to the same aircraft by N-number and date.