An Air Accidents Investigation Branch (AAIB) report published on 1 October 2026 examined a fatal accident involving a Beagle B121 Series 2, registration G-AZDG, at Hanningfield Reservoir in Essex on 28 December 2025. The pilot did not survive.

According to the report, the pilot took off from North Weald Airport, Essex, for a local flight. About 1 hour and 20 minutes later, the aircraft was seen entering a steep descent before it struck the water in the reservoir.

The AAIB said the pilot had been experiencing mental health issues and sleep difficulties for a few weeks before the accident. Based on that information, a handwritten card by the pilot, and the aircraft's flight profile, the branch concluded it is likely the pilot deliberately flew into the reservoir.