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ASN Wikibase Occurrence # 188562
Last updated: 11 October 2021
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Date:08-JUL-2016
Time:10:34 LT
Type:Silhouette image of generic YK52 model; specific model in this crash may look slightly different
Yakovlev Yak-52
Owner/operator:QinetiQ/Empire Test Pilot School (ETPS)
Registration: G-YAKB
MSN: 9211517
Fatalities:Fatalities: 1 / Occupants: 2
Other fatalities:0
Aircraft damage: Written off (damaged beyond repair)
Category:Accident
Location:1 NM north of Dinton, Wiltshire -   United Kingdom
Phase: En route
Nature:Training
Departure airport:MOD Boscombe Down (EGDM)
Destination airport:MOD Boscombe Down (EGDM)
Investigating agency: AAIB
Narrative:
The aircraft was conducting a flight for a test pilots’ school. The commander, a civilian flight instructor, was in the rear seat and a tutor from the school occupied the front seat.
Shortly after completing a series of aerobatic manoeuvres, the engine lost power without warning. Attempts to restore power were unsuccessful and, at about 1,100 ft agl, the commander committed to a forced landing in a field. Evidence showed that the pilots probably became aware of a farm strip late in the approach to the intended field and made an attempt to land on the strip. The forced landing was unsuccessful and the aircraft struck the ground in a steeply left banked attitude at the southern edge of the strip. The tutor was fatally injured and the commander sustained serious injuries.

Conclusion
The cause of the loss of engine power could not be determined, but the reported symptoms were consistent with a fuel system problem. Attempts to restart the engine were unsuccessful and the commander committed to a forced landing from about 1,100 ft agl. Although the commander’s initial intention was to force land in a field, he became aware of a farm strip and probably made a late change of decision to land on the strip. This late decision, and the subsequent manoeuvres in the attempt to reach the strip, ultimately resulted in an unsuccessful forced landing and the aircraft struck the ground in a steeply left banked attitude.

Sources:

1. https://www.gov.uk/government/uploads/system/uploads/attachment_data/file/653673/AAIB_Bulletin_11-2017.pdf
2. http://www.bbc.co.uk/news/uk-england-wiltshire-36744111
3. https://www.flightradar24.com/data/aircraft/g-yakb#a452f32
4. http://www.salisburyjournal.co.uk/news/14607214.BREAKING__jet_crashes_in_Dinton/(inc/ photos)
5. http://www.gazetteandherald.co.uk/news/14607434.Emergency_services_at_scene_of_plane_crash/
6. http://www.itv.com/news/west/2016-07-08/man-killed-in-light-aircraft-crash-in-wiltshire/
8. http://www.raf.mod.uk/news/archive/raf-pays-tribute-to-pilot-killed-in-civilian-air-accident-11072016
9. https://www.gov.uk/government/publications/service-inquiry-into-the-aircraft-accident-involving-yak52-g-yakb-on-8-july-2016
10. 2017: [LINK NOT WORKING ANYMORE:http://www.bbc.co.uk/news/amp/40304283]
11. 2017: Service Inquiry https://www.gov.uk/government/uploads/system/uploads/attachment_data/file/618535/Service_Inquiry_into_the_accident_involving-YAK52-G-YAKB-20170606-YAK-Rct.pdf
12. SN-2019/004: Use of the Fuel Pump Primer in an Emergency: Yak 50/52 Aeroplanes: http://publicapps.caa.co.uk/docs/33/SafetyNotice2019004.pdf

Safety recommendations:

Safety recommendation 2017-021 issued by AAIB to CAA

Media:


Images:

Photo of G-YAKB courtesy AirHistory.net


Kemble - Cotswold (EGBP / GBA)
14 July 2010; (c) Alastair T. Gardiner

Revision history:

Date/timeContributorUpdates
08-Jul-2016 12:58 swat.pilots Added
08-Jul-2016 12:59 harro Updated [Aircraft type, Other fatalities, Location, Country, Damage, Narrative, Plane category]
08-Jul-2016 13:03 harro Updated [Registration, Cn, Operator, Location, Phase, Source]
08-Jul-2016 15:08 Aerossurance Updated [Time, Phase, Destination airport, Source, Damage, Narrative]
08-Jul-2016 17:50 swat Updated [Total fatalities, Source]
08-Jul-2016 22:37 Geno Updated [Location, Source]
09-Jul-2016 00:24 Dr.John Smith Updated [Location, Phase, Nature, Destination airport, Source, Embed code, Narrative]
09-Jul-2016 06:31 Anon. Updated [Departure airport]
11-Jul-2016 13:39 Dr.John Smith Updated [Location, Phase, Nature, Departure airport, Destination airport, Source, Embed code, Narrative]
11-Jul-2016 14:29 Dr.John Smith Updated [Source, Embed code]
13-Jul-2016 07:17 Aerossurance Updated [Operator, Nature, Source, Narrative]
13-Jul-2016 12:32 Dr.John Smith Updated [Source]
16-Jun-2017 15:23 Aerossurance Updated [Source]
16-Jun-2017 22:49 Iceman 29 Updated [Source, Embed code, Narrative]
25-Jun-2017 14:40 bobby Updated [Embed code, Narrative]
17-Jul-2017 20:05 Aerossurance Updated [Source, Narrative]
09-Nov-2017 14:26 harro Updated [Time, Location, Source, Narrative]
17-Jun-2019 20:03 harro Updated [Source]
10-Apr-2020 20:10 Nick Slaughter Updated [Operator, Operator]

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