This is preliminary information, subject to change, and may contain errors. Any errors in this writing will be corrected when/if the NTSB preliminary report is released.
https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=N43LK
- History of Flight:
On September 27, 2026, at about 1621 local time, a Piper PA-18 Replica, N43LK, registered to PA-18 LLC out of Kalispell, Montana, N43LK, was destroyed when it was involved in an accident at Buffalo Municipal Airport (CFE/KCFE), Buffalo, Minnesota. The commercial pilot was seriously injured, and the student pilot/builder/passenger was fatally injured. The training flight was originating at the time, and was presumably destined to Kalispell, Montana.
The FAA reported that the airplane crashed under unknown circumstances on departure, and reported that the purpose of the flight was instructional.
There is no ADS-B data for the accident flight or previous flight history.
A brief 3-4 second clip from a nearby Baseball field showed the airplane in a slow climb when the right wing dropped and the airplane spun out of control. Given the wreckage location, the airplane was most likely departing runway 18.
- Pilot(s) Information:
The pilot, aged 40, held a commercial pilot certificate with an airplane single engine land/sea, airplane multiengine land, instrument airplane, and rotorcraft/helicopter ratings. He also held a gyroplane sports endorsement and a flight instructor certificate. His third class FAA medical was issued on 8/2021, with a note that must have available glasses for near vision.
The passenger/builder, aged 39, held a student pilot certificate that was issued on 7/30/2024. His FAA BasicMed Course was dated 7/9/2025 (and he previously held a first class medical from 7/2023).
It is currently unknown who was at the controls at the time of the accident, but multiple sources including the FAA mentioned that the commercial pilot was the PIC.
- Airplane Information:
The accident aircraft, serial number KWT-01, was manufactured in an unknown year, but was issued a certificate on 09/30/2024.
The Piper PA-18 is a high-wing, two-seat, conventional landing gear monoplane and is usually powered by a Lycoming O-320 engine which drives a fixed-pitch McCauley propeller. It is unknown what engine powered the accident airplane.
According to a standard PA-18 POH, the stalling speed is 42 mph.
According to the POH, Takeoff, Climb, and Stalls:
The stabilizer adjustment should be set approximately in the neutral position for take-off. Fuel selector should be on the correct tank, carburetor heat off, mixture full rich. The flaps can be lowered if desired, but should be retracted as soon as climbing airspeed has been reached to achieve maximum rate of climb. The best rate of climb air speed at gross load is 75 M. P. H. on both models of the PA-18. At lighter weights, the best climbing airspeed will be reduced considerably. The gross weight power off stalling speed with full flaps in the Super Cub "150" is 43 М. Р. Н.; with flaps up the stalling speed increases about 4 M. P. H.
- Wreckage and Impact Information:
The airplane came to rest nose down on airport property and there was no post crash fire. Both wings remained attached to the airframe and sustained leading edge impact damage. The nose was crushed aft. There was a visible fuel leak surrounding the main wreckage, but there was no debris field leading to the airplane. The tail remained attached to the airframe and was not damaged. The impact appears consistent with a departure aerodynamic stall/spin with little to no forward airspeed.
- Airport Information:
KCFE is a non-towered public airport located 2 miles southeast of Buffalo, Minnesota. The airport field elevation is 967.7 ft. The airport features a single asphalt runway 18/36 in fair condition which is 3200 x 75 ft.
- Weather:
(1) Brief:
At 1622, the airport was reporting calm winds, 10 miles visibility, an overcast ceiling at 2,800 ft AGL, temperature 20 °C, dewpoint 17 °C, and an altimeter setting of 30.10 inches of mercury. The calculated density altitude was 1609 ft.
A review of the icing probability chart contained within FAA Special Airworthiness Information Bulletin CE-09-35 revealed that the atmospheric conditions at the time of the accident were "conducive to serious icing at glide [idle] power."
(2) METARs:
METAR KCFE 272047Z AUTO VRB04KT 10SM OVC019 20/17 A3010 RMK AO2
METAR KCFE 272122Z AUTO 00000KT 10SM OVC028 20/17 A3010 RMK AO2 <<<
METAR KCFE 272141Z AUTO 00000KT 10SM OVC026 20/17 A3011 RMK AO2