Vertical Aviation HUMMINGBIRD accident near Lee'S Summit, Missouri, May 16, 2026
On May 16, 2026 at about 2:50 pm local time, a 2025 Vertical Aviation HUMMINGBIRD (helicopter), an amateur-built aircraft,, registered N284ST, was substantially damaged in an accident during takeoff near Lee'S Summit, Missouri (Kansas City/Lee'S Summit Rgnl airport). It was a personal flight under general aviation rules (Part 91). 1 person had minor injuries; 2 others were unhurt. The weather was visual conditions (good weather).
The NTSB's probable cause their words, unchanged
The NTSB has not yet published a probable cause for this accident. Investigations usually take one to two years; this page updates when the final report is released.
Source: NTSB aviation accident database, copy made October 5, 2026. Docket and reports at the NTSB.
What the record shows
- Date
- May 16, 2026 · about 2:50 pm local time
- Place
- Lee'S Summit, Missouri · Kansas City/Lee'S Summit Rgnl · map
- Type
- Accident
- Injuries
- 1 person had minor injuries; 2 others were unhurt.
- Weather
- visual conditions (good weather)
- Aircraft
- Vertical Aviation HUMMINGBIRD 300L, built 2025, amateur-built
- Registration
- N284ST · registry record · serial 2207
- Damage
- Substantial damage
- Flight
- Personal flight · general aviation rules (Part 91)
The NTSB's narrative preliminary · quoted from the NTSB record
On May 16, 2026, about 0950 central daylight time, a Vertical Aviation Technologies 300L Hummingbird helicopter, N284ST, was substantially damaged when it was involved in an accident near Lee’s Summit, Missouri. One passenger sustained minor injuries. The pilot and second passenger were not injured. The helicopter was operated as a Title 14 Code of Federal Regulations Part 91 personal flight. The pilot reported that after completing his initial preflight actions, he departed from his home base in Milan, Missouri, for Trenton Municipal Airport (TRX) in Trenton, Missouri. After refueling at TRX, he then departed to Kansas City/Lee's Summit Regional Airport (LXT), Lee’s Summit, Missouri, to participate in an EAA Young Eagles flight. According to the pilot, the passengers were given a safety briefing after they were loaded into the helicopter. After the engine was started, the engine oil temperature was observed to be within the required range to engage the rotor systems, and the pilot initiated a low hover. The pilot stated that after he turned about 90° to the right and flew south about 15 ft above ground level, the helicopter yawed to the left and fell to the ground. The helicopter impacted sloped terrain and came to rest on its right side, which resulted in substantial damage to its vertical and horizontal stabilizers. Video footage of the accident depicted the helicopter entering translational flight and turning to the right. After about 5 seconds, the helicopter climbed about 15 ft above ground level (AGL). A sudden increase of engine RPM can be heard, followed immediately by a loss of control, during which the helicopter rotated counterclockwise and impacted the terrain. The wreckage was retained for further investigation.
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 takeoff defining event
The aircraft
- Seats: 4
- Landing gear: fixed
- Operator: Amd Air LLC
The flight
- Flight plan: none
Weather at the time
- Light: daylight
- Wind: from 160° at 7 knots
- Visibility: 10 statute miles
- Sky: clear
- Temperature: 75°F (24°C), dew point 66°F (19°C)
- Altimeter: 29.82 inHg
- Observation at 9:53 am from KLXT
Weather report (METAR): METAR KLXT 161453Z AUTO 16007KT 10SM CLR 24/19 A2982 RMK AO2 SLP089 T02440194 50008 $=
Injuries
| Fatal | Serious | Minor | None | |
|---|---|---|---|---|
| Flight crew | 1 | |||
| Passengers | 1 | 1 |
Documents from the investigation the NTSB's docket: the evidence folder behind the report
The NTSB has not released the docket for this case yet. The docket, the folder of records gathered during an investigation (maintenance records, photographs, witness statements, examinations), is usually released when the investigation is nearly complete, and the list here is refreshed when it appears. Check at the NTSB.
Everything on this page comes from the NTSB's public records. The narrative, probable cause and findings are the NTSB's own words; the coded tables behind the report are written out in plain English, with pilots' ages, home towns and medical details left out. The documents and photographs are the NTSB's docket, shown as the NTSB released them. This site's own text never names anyone involved. A preliminary report can change; the final report usually follows one to two years later, and the page is refreshed when it does.