Stinson 108 accident near Lee'S Summit, Missouri, July 21, 2017
On July 21, 2017 at about 4:00 pm local time, a 1947 Stinson 108, registered N8954K, was substantially damaged in an accident during landing near Lee'S Summit, Missouri (Lee'S Summit airport). It was a personal flight under general aviation rules (Part 91). No one was hurt; 2 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’s loss of directional control during landing due to the failure of the right brake seal.
Source: NTSB aviation accident database, copy made October 4, 2026. Docket and reports at the NTSB.
What the record shows
- Date
- July 21, 2017 · about 4:00 pm local time
- Place
- Lee'S Summit, Missouri · Lee'S Summit · map
- Type
- Accident
- Injuries
- No one was hurt; 2 people were on board or involved.
- Weather
- visual conditions (good weather)
- Aircraft
- Stinson 108, built 1947 · all 108s on the register
- Registration
- N8954K · registry record · serial 108-1954
- Damage
- Substantial damage
- Flight
- Personal flight · general aviation rules (Part 91)
The NTSB's narrative final · quoted from the NTSB record
During a cross-country flight, the airline transport pilot chose an en route stop to refuel. During the landing roll, the airplane started to drift left, so the pilot applied the right brake and rudder to correct the turn; however, the brake "went to the floor." The pilot was unable to correct the turn, and the airplane continued off the edge of the runway. An examination of the braking system confirmed that the right brake was not functional, likely due to a failed seal.
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 from the NTSB's investigation tables, in plain English
What happened, in order
- Sys/Comp malf/fail (non-power) during landing defining event
- Loss of control on ground during landing
- Runway excursion during landing
- Landing gear collapse during landing
The NTSB's findings
- cause Aircraft › Aircraft systems › Landing gear system › Brake › Malfunction
Pilot
- Certificate: airline transport pilot, flight instructor
- Ratings: multi-engine land; single-engine land; instructor: airplane single-engine; instrument: airplane
- Flight time: 9,374 hours in all; 68.5 in this make and model; 7,969 as pilot in command
- Last flight review: April 20, 2017
- Medical certificate: Class 1 (with waivers/limitations)
- Seat: left
- Injury: no injuries
The aircraft
- Last inspection: annual inspection, April 7, 2017
- Maximum gross weight: 2,150 lb
- Landing gear: fixed
- Engine: Franklin 6A4-165-B3 (piston); 0 hours total
The flight
- Departed from: KEWK Newton KS at 2:00 pm
- Destination: KLXT Lee'S Summit MO
- Flight plan: VFR
- Runway 29, 4,000 ft by 75 ft
Weather at the time
- Light: daylight
- Wind: from 212° at 12 knots
- Visibility: 10 statute miles
- Sky: clear
- Temperature: 91°F (33°C), dew point 73°F (23°C)
- Altimeter: 29.95 inHg
- Observation at 3:53 pm
Injuries
| Fatal | Serious | Minor | None | |
|---|---|---|---|---|
| Flight crew | 1 | |||
| Passengers | 1 |
Documents from the investigation the NTSB's docket: the evidence folder behind the report
The docket, the folder of records gathered during an investigation (maintenance records, photographs, witness statements, examinations), has not been read from the NTSB for this case yet; the list appears here once it has. Open the docket at the NTSB.
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 documents and photographs are the NTSB's docket, the folder of records gathered during the investigation, shown as the NTSB released them (the NTSB redacts some personal details first) and listed under the NTSB's own titles. This site's own text 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 CEN17LA280.