Date:	Monday 3 February 2025
Time:	17:00
Type:	Robinson R22 Beta
Owner/operator:	Tniy Heli Ltd
Registration:	G-KKRN
MSN:	1201
Year of manufacture:	1989
Engine model:	Lycoming O-360-J2A
Fatalities:	Fatalities: 0 / Occupants: 2
Other fatalities:	0
Aircraft damage:	Substantial
Category:	Accident
Location:	Hurst, near Reading, Berkshire -   United Kingdom
Phase:	Approach
Nature:	Training
Departure airport:	Blackbushe Airport (BBS/EGLK)
Destination airport:	White Waltham Airfield (EGLM)
Investigating agency:	AAIB
Confidence Rating:	Accident investigation report completed and information captured

Narrative:
At approximately 800 ft agl while approaching White Waltham, the trainee pilot inadvertently moved the fuel mixture control to the lean position instead of selecting the carburettor heating (carb heat) on. The selection of lean caused the engine to stop. After immediately taking control, the instructor established the helicopter in autorotation but did not have sufficient time and height available to initiate an engine restart. While the helicopter experienced a partial rollover on landing, neither pilot was injured in the accident.

https://www.readingchronicle.co.uk/news/24912490.pilot-passenger-injured-helicopter-crashes-field/
https://www.gov.uk/aaib-reports/aaib-investigation-to-robinson-r22-beta-g-kkrn

https://www.flightradar24.com/data/aircraft/g-kkrn#38fcd6b6
https://www.helis.com/database/cn/52415/

Built 1989: sold on and re-registered several times:
14-11-1989: First Registered as G-DMCD
09-07-1991: Re-registered as G-OOLI
27-03-1996: Reverted to prior registration as G-DMCD (2nd time)
23-01-2004: Re-registered as G-CMCD (3rd time)
18-08-2010: Re-registered as G-LINS
24-01-2011: Re-registered as G-LINS (2nd time)
11-10-2011: Re-registered as G-LINS (3rd time)
07-10-2013: Re-registered as G-LINS (4th time)
04-08-2014: Re-registered as G-WFWS
22-06-2018: Re-regsitered as G-KKRN
11-09-2019: Re-registered as G-KKRN (2nd time)
27-05-2022: Re-registered as G-KKRN (3rd time)
07-01-2025: Re-registered as G-KKRN (4th time)
03-02-2025: Accident at Hurst, near Reading, Berkshire as per above. Total amount of flying hours on airframe: 10,556 as at 31 July 2024

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AAIB R22 Beta, G-KKRN inadvertent engine shutdown leading to autorotation, 3 Feb 2025 "The risk of misidentification of the mixture control when selecting carburettor heating in the Robinson R22 Beta (R22) was first formally documented by the manufacturer in January 1981." www.gov.uk/aaib-reports...

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— Aerossurance (@aerossurance.bsky.social) September 11, 2025 at 10:06 AM

Date/time	Contributor	Updates
08-Feb-2025 18:40	Hooligan	Added
08-Feb-2025 18:40	ASN	Updated [Cn, Source, ]
25-Jun-2025 13:29	Dr. John Smith	Updated [Operator, Source, Embed code, Narrative, ]
11-Sep-2025 09:15	Aerossurance	Updated [Location, Phase, Destination airport, Embed code, Narrative, ]
11-Sep-2025 09:16	Aerossurance	Updated [Source, Embed code, ]
11-Sep-2025 09:17	Aerossurance	Updated [Embed code, ]
12-Sep-2025 16:23	ASN	Updated [Embed code, Accident report, ]