Aeronca 11AC and amateur-built EAA BIPLANE P2 accident near Ft. Leavenworth, Kansas, March 25, 2000
On March 25, 2000 at about 11:30 pm local time, 2 aircraft, Aeronca 11AC (N9570E) and amateur-built EAA BIPLANE P2 (N51933), were involved in the same accident near Ft. Leavenworth, Kansas (Sherman Aaf airport). No one was hurt; 3 people were on board or involved. The weather was visual conditions (good weather).
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The NTSB's probable cause their words, unchanged
the pilot of N51933 did not see and maintain clearance from N9570E. A factor associated with the accident was the pilot of N51933's restricted forward visibility during the landing due to the tailwheel configuration. An additional factor was the pilot of N51933 entered the traffic pattern on base leg and flew a short final approach which reduced his ability to look for other traffic.
the pilot of N51933 did not see and maintain clearance from N9570E. A factor associated with the accident was the pilot of N51933's restricted forward visibility during the landing due to the tailwheel configuration. An additional factor was the pilot of N51933 entered the traffic pattern on base leg and flew a short final approach which reduced his ability to look for other traffic.
Source: NTSB aviation accident database, copy made October 4, 2026. Docket and reports at the NTSB.
What the record shows
- Date
- March 25, 2000 · about 11:30 pm local time
- Place
- Ft. Leavenworth, Kansas · Sherman Aaf · map
- Type
- Accident · collision on the ground
- Injuries
- No one was hurt; 3 people were on board or involved.
- Weather
- visual conditions (good weather)
- Aircraft 1
- Aeronca 11AC · all 11ACs on the register
- Registration
- N9570E · registry record · serial 1208
- Damage
- Substantial damage
- Flight
- Personal flight · general aviation rules (Part 91)
- Aircraft 2
- Amateur-built EAA BIPLANE P2 EAA BIPLAN
- Registration
- N51933 · no longer on the register · serial 31852
- Damage
- Substantial damage
- Flight
- Personal flight · general aviation rules (Part 91)
The NTSB's narrative for the Aeronca 11AC final · quoted from the NTSB record
N9570E, an Aeronca 11AC, was practicing touch and go landings on runway 15. The airplane touched down and the pilot was transitioning the airplane for takeoff when it was struck from behind by N51933, an EAA Biplane P2, which landed on the same runway. N9570E was not equipped with a radio. N51933 was equipped with a radio and the pilot reported he made position reports in the traffic pattern. Both airplanes were tailwheel equipped. The pilot of N51933 reported that he looked for other airplanes in the traffic pattern and did not see any. The pilot of N51933 reported the accident may have been prevented had he not made a short final approach and if he had entered the traffic pattern on downwind instead of on a base leg.
The complete narrative as the NTSB published it. The NTSB's docket holds the report as a PDF and any photographs, statements and other documents from the investigation.
The NTSB's narrative for the amateur-built EAA BIPLANE P2 final · quoted from the NTSB record
N9570E, an Aeronca 11AC, was practicing touch and go landings on runway 15. The airplane touched down and the pilot was transitioning the airplane for takeoff when it was struck from behind by N51933, an EAA Biplane P2, which landed on the same runway. N9570E was not equipped with a radio. N51933 was equipped with a radio and the pilot reported he made position reports in the traffic pattern. Both airplanes were tailwheel equipped. The pilot of N51933 reported that he looked for other airplanes in the traffic pattern and did not see any. The pilot of N51933 reported the accident may have been prevented had he not made a short final approach and if he had entered the traffic pattern on downwind instead of on a base leg.
The complete narrative as the NTSB published it. The NTSB's docket holds the report as a PDF and any photographs, statements and other documents from the investigation.
The factual record for the Aeronca 11AC from the NTSB's investigation tables, in plain English
Pilot
- Certificate: commercial pilot
- Ratings: multi-engine land; single-engine land; instrument: airplane
- Flight time: 2,226 hours in all; 120 in this make and model; 23 in the last 90 days; 8 in the last 30 days; 1,997 as pilot in command
- Medical certificate: Class 2 (valid medical--w/ waivers/lim.)
- Seat: left
The aircraft
- Airframe total time: 1,644 hours
- Last inspection: annual inspection, July 10, 1999; 78 hours since
- Maximum gross weight: 1,250 lb
- Seats: 2
- Landing gear: fixed
- Engine: Continental A-65 (piston); 0 hours total
The flight
- Departed from: FLV at 11:20 pm
- Destination: FLV
- Flight plan: none
- Runway 15, 5,905 ft by 100 ft
Weather at the time
- Light: daylight
- Wind: from 270° at 4 knots
- Visibility: 10 statute miles
- Sky: scat at 25,000 ft
- Temperature: 63°F (17°C), dew point 36°F (2°C)
- Altimeter: 30.00 inHg
- Observation at 11:53 pm from MCI, 11 miles away
Injuries
| Fatal | Serious | Minor | None | |
|---|---|---|---|---|
| Crew | 1 | |||
| Passengers | 1 |
The factual record for the amateur-built EAA BIPLANE P2 from the NTSB's investigation tables, in plain English
Pilot
- Certificate: private
- Ratings: single-engine land
- Flight time: 983 hours in all; 148 in this make and model; 7 in the last 90 days; 4 in the last 30 days; 983 as pilot in command
- Medical certificate: Class 3 (invalid medical for flight)
- Seat: frt
The aircraft
- Airframe total time: 371 hours
- Last inspection: annual inspection, November 5, 1999; 12 hours since
- Maximum gross weight: 1,405 lb
- Seats: 1
- Landing gear: fixed
- Engine: Lycoming O-290-G (piston); 0 hours total
The flight
- Departed from: STJ St. Joseph MO at 10:50 pm
- Destination: FLV
- Flight plan: none
- Runway 15, 5,905 ft by 100 ft
Injuries
| Fatal | Serious | Minor | None | |
|---|---|---|---|---|
| Crew | 1 |
About this page
Everything above comes from the NTSB's public accident database: the narrative, probable cause and findings are the NTSB's own words, and the coded tables behind its report (pilot, aircraft, flight, weather, injuries, sequence of events) are written out in plain English. Pilots' ages, home towns and medical details are left out on purpose. The docket at the NTSB holds the report as a PDF and the investigation's photographs and documents. This site never names pilots, passengers or anyone else involved. A preliminary report describes what is known soon after the event and can change; the final report, with the probable cause, usually follows one to two years later and this page is refreshed when it does. Case number CHI00LA099.