Mooney M20J and amateur-built RV4 accident near Ryde, Gb, September 4, 2010
On September 4, 2010 at about 4:00 pm local time, 2 aircraft, Mooney M20J (GJAST) and amateur-built RV4 (GMARX), were involved in the same accident near Ryde. 2 people were killed and 2 people were seriously injured.
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
- September 4, 2010 · about 4:00 pm local time
- Place
- Ryde, United Kingdom · map
- Type
- Accident
- Injuries
- 2 people were killed and 2 people were seriously injured.
- Weather
- not recorded
- Aircraft 1
- Mooney M20J · all M20Js on the register
- Registration
- GJAST · no longer on the register · serial 24-1010
- Damage
- Destroyed
- Flight
- Flight of an unrecorded kind · non-U.S. private rules
- Aircraft 2
- Amateur-built RV4 UNDESIGNAT
- Registration
- GMARX · no longer on the register · serial 2394-1211
- Damage
- Substantial damage
- Flight
- Flight of an unrecorded kind · non-U.S. private rules
The NTSB's narrative for the Mooney M20J preliminary · quoted from the NTSB record
On September 4, 2010, approximately 1600 Universal Coordinated Time (UTC), a Mooney M20J single-engine airplane, G-JAST, and a Vans RV-4 single-engine airplane, G-MARX, collided in midair while maneuvering near Ryde, Isle of Wight, United Kingdom. G-JAST was destroyed and G-MARX sustained substantial damage. The two occupants of G-JAST were fatally injured and the two occupants of G-MARX sustained serious injuries. The two local flights departed Bembridge, United Kingdom, at an unknown time. The accident is being investigated by the Air Accidents Investigation Branch (AAIB), United Kingdom.
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 RV4 preliminary · quoted from the NTSB record
On September 4, 2010, approximately 1600 Universal Coordinated Time (UTC), a Mooney M20J single-engine airplane, G-JAST, and a Vans RV-4 single-engine airplane, G-MARX, collided in midair while maneuvering near Ryde, Isle of Wight, United Kingdom. G-JAST was destroyed and G-MARX sustained substantial damage. The two occupants of G-JAST were fatally injured and the two occupants of G-MARX sustained serious injuries. The two local flights departed Bembridge, United Kingdom, at an unknown time. The accident is being investigated by the Air Accidents Investigation Branch (AAIB), United Kingdom.
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 Mooney M20J from the NTSB's investigation tables, in plain English
What happened, in order
- Midair collision during maneuvering defining event
Pilot
No details recorded.
The aircraft
- Last inspection: inspection type not recorded
- Maximum gross weight: 2,740 lb
- Seats: 4
- Landing gear: retractable
- Engine: Lycoming IO-360-A3B6D (piston); 0 hours total
The flight
- Departed from: Bembridge
- Destination: Bembridge
- Flight plan: not recorded
Weather at the time
- Temperature: 0°F (-18°C), dew point 0°F (-18°C)
Injuries
| Fatal | Serious | Minor | None | |
|---|---|---|---|---|
| Flight crew | 1 | |||
| Passengers | 1 |
The factual record for the amateur-built RV4 from the NTSB's investigation tables, in plain English
What happened, in order
- Midair collision during maneuvering defining event
Crew member
No details recorded.
The aircraft
- Last inspection: inspection type not recorded
- Maximum gross weight: 1,500 lb
- Seats: 2
- Landing gear: fixed
- Engine: Unknown (piston); 0 hours total
- Operator: Marx Brothers Flying Group
The flight
- Departed from: Bembridge
- Destination: Bembridge
- Flight plan: not recorded
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.
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.