MD Helicopter MD900 incident near London, Gb, July 25, 2021
On July 25, 2021 at about 8:14 pm local time, a MD Helicopter MD900, registered GLNDN, was involved in an incident during enroute near London. It was flown under non-U.S. private rules. No one was hurt; 4 people were on board or involved.
The NTSB's probable cause their words, unchanged
The NTSB has not yet published a probable cause for this incident. 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
- July 25, 2021 · about 8:14 pm local time
- Place
- London, United Kingdom
- Type
- Incident
- Injuries
- No one was hurt; 4 people were on board or involved.
- Weather
- not recorded
- Aircraft
- MD Helicopter MD900 900-00125
- Registration
- GLNDN · no longer on the register
- Damage
- Not recorded
- Flight
- Flight · non-U.S. private rules
The factual record from the NTSB's investigation tables, in plain English
What happened, in order
- Electrical system malf/failure during enroute defining event
The aircraft
- Landing gear: fixed
- Not recorded
The flight
- Departed from: London
- Destination: Northolt-Greater London
Weather at the time
- Temperature: 0°F (-18°C), dew point 0°F (-18°C)
Injuries
| Fatal | Serious | Minor | None | |
|---|---|---|---|---|
| Flight crew | 2 | |||
| Passengers | 2 |
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.