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Collection
Service Inquiry (SI)
Published Ministry of Defence Service Inquiries (SIs), Board of Inquiries (BOIs) and Military Aircraft Accident Summaries (MAAS).
This collection provides all published Service Inquiry (SI) reports. A number Board of Inquiry (BOI) and Military Aircraft Accident Summary (MAAS) reports are also available below. Links to the UK Governemnt Web Archive have been provided below were reports were previously published on the Ministry of Defence’s old website
A service inquiry is held after an military incident, which results in death or serious injury in order to understand the circumstances, and any changes to procedures or equipment to prevent recurrence.
Related information
Service Inquiries (SI)
For guidance about Service Inquiries please see the ‘Guide to Service Inquiries (JSP 832)’ available in the UK Government Web Archive.
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Service Inquiry into the Watchkeeper (WK031) Unmanned Air Vehicle (UAV) accident at West Wales Airport on 16 October 2014
- Corporate report
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Service Inquiry into death of a Royal Marine during an endurance march on Dartmoor Training Area on 28 May 2015
- Corporate report
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Service Inquiry: accident involving Lynx Mk 9 ZF540 on 26 April 2014
- Corporate report
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Service Inquiry: incident involving Voyager ZZ333 on 9 February 2014
- Corporate report
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Service Inquiry: incident involving Gazelle XZ936 on 2 June 2014
- Corporate report
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Service Inquiry: accident involving Tornado ZD743 and Tornado ZD812 over Moray Firth
- Corporate report
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Service Inquiry: accident involving Sea King ZE428 at RNAS Yeovilton
- Corporate report
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Service Inquiry: accident involving Tucano ZF349 at RAF Linton-on-Ouse
- Corporate report
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Service Inquiry: accident involving Hawk TMk1 XX177 at RAF Scampton
- Corporate report
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Service Inquiry investigating the accident involving Chinook ZA708 on 10 Aug 10
- Corporate report
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Service Inquiry into the aviation fuel contamination at Mount Pleasant Complex during the period 25 Jun to 05 Aug 11
- Corporate report
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Service Inquiry report into the incident involving Lynx XZ210 on 1 Dec 11
- Corporate report
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Service Inquiry report into the occurrence involving Squirrel HT1 ZJ276 on 20 April 2012
- Corporate report
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Service Inquiry report into the occurrence involving Chinook ZA671 on 07 April 2012
- Corporate report
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Service Inquiry: shooting incident onboard HMS Astute, Southhampton
- Corporate report
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Service inquiry: accident involving Red Arrows Hawk T Mk1 XX179 near Bournemouth
- Corporate report
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Service Inquiry investigating the accident involving Unmanned Air System (UAS) Hermes 450, ZK515 on 2 October 2011
- Corporate report
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Service Inquiry: low flying incident Tornado ZA557, Peebles
- Corporate report
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Service Inquiry: incident involving Chinook ZH898, oxfordshire
- Corporate report
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Service inquiry investigating the accident to Tornado GR4 ZG792 on 27 Jan 11
- Corporate report
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Service Inquiry report into accident involving Puma XW211 on 5 Jul 2011
- Corporate report
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Service Inquiry: grounding of HMS Astute, Isle of Skye
- Corporate report
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Service Inquiry: Puma ZA934 helicopter crash, Catterick
- Corporate report
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Service Inquiry report into the Red Arrows accident in Crete on 23 March 2010
- Corporate report
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Service Inquiry investigating the accident to Tutor G-BYXR
- Corporate report
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Service Inquiry into the flooding of HMS Endurance
- Corporate report
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Service Inquiry into the death of Capt JA Philippson
- Corporate report
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Service Inquiry: investigating the accident to Tornado F3 ZE 982
- Corporate report
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Service Inquiry investigating the accident to Tutor Aircraft G-BYUT and G-BYVN
- Corporate report
Internal reviews
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Operation Telemeter internal review
- Corporate report
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HMS Antrim Op Corporate report of proceedings
- Corporate report
Board of Inquiries (BOIs)
A number of the BOIs previously published on mod.uk can be found in the list below. If you are unable to find the BOI you’re looking for please visit the Boards of Inquiries available at UK Government Web Archive.
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Board of Inquiry report into the death of Pte James
- Corporate report
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Board of Inquiry: Squirrel ZJ 247 helicopter crash, Kingscott Valley
- Corporate report
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Board of Inquiry report: death of English D P CEM1
- Corporate report
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Board of Inquiry report investigating the accident to Tornado GR Mk4, ZA554
- Corporate report
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Board of Inquiry report into the grounding of HMS Superb
- Corporate report
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Board of Inquiry into the loss of HMS Portland's Lynx XZ724 helicopter on 8 December 2004
- Corporate report
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Board of inquiries in The National Archives
- Guidance
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Board of Inquiry into the loss of Hercules XV179 (Iraq 30 Jan 05)
- Corporate report
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Board of inquiry into the circumstances leading up to the deaths of six Royal Military Policemen
- Corporate report
Military Aircraft Accident Summary (MAAS)
Following the completion of a full RAF Board of Inquiry into the causes of a serious military aircraft accident, the Directorate of Air Staff prepares a Military Aircraft Accident Summary (MAAS), which is presented to Parliament. It is written in non technical language and is designed to be read and understood by the non specialist. A MAAS is only ever published after the full investigation process has been completed.
It should be noted that given the passage of time, it has not been possible to locate documents for all RAF aircraft accidents. However, all those RAF MAAS held centrally (over 300) since they were first introduced in 1979 are now available on the UK Government Web Archive. All future MAAS will be included following presentation to Parliament.