# NTSB GAA21WA188: MD Helicopter MD900, London, United Kingdom, July 25, 2021

- Type: NTSB incident investigation
- Classification: Incident · No injuries · Class 5 · Foreign
- Date: July 25, 2021, 20:14 local (20:14 UTC)
- Place: London, United Kingdom
- Phase of flight: [Enroute](https://openairdocs.org/ntsb-phases/400) (OpenAirDocs' grouping)
- Defining event: [Enroute: Electrical system malf/failure](https://openairdocs.org/ntsb-events/332)
- Highest injury: No injuries
- Injuries: 4 uninjured
- Status: Led by another country's authority
- Investigation class: Class 5 - No publish
- NTSB office: General Aviation Accidents
- Lead agency: Other
- NTSB case key (mKey): 103573
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=GAA21WA188
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/103573/pdf
- Page: https://openairdocs.org/ntsb/GAA21WA188

## Sequence of events

The events NTSB coded, in order, by phase of flight. The defining event best describes what happened.

- [Enroute: Electrical system malf/failure](https://openairdocs.org/ntsb-events/332) (defining event); cases with it: [All aircraft, 182 cases](https://openairdocs.org/ntsb-events/332/sequence.md)

## Aircraft

- Registration: G-LNDN (not matched to a registry record)
- Reported make and model: MD HELICOPTER MD900 (900-00125)
- Category: Helicopter
- Damage: No damage
- Fire: Unknown
- Flight: Non-U.S., non-commercial
- Departed: London
- Destination: Northolt-Greater London

From the NTSB's public API. Aircraft are matched to registry aircraft by N-number and event date, checked against the reported serial number, make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model.

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