Overview
On 8 July 2016 at 1033 (Z+1), a Yakovlev Yak-52 aircraft, registration G-YAKB, was involved in an accident near Boscombe Down, Wiltshire, England. The Ministry of Defence (MOD) convened a Service Inquiry (SI) under Section 343 of the Armed Forces Act 2006 and in accordance with JSP 832 (Issue 1.0 Oct 08). The SI was ordered by the Director General of the Defence Safety Authority (DG DSA) and assembled on 14 July 2016 at MOD Main Building, Whitehall, London.
Inquiry Panel
The SI Panel comprised a President (Commander, Royal Navy) and two Members: a Squadron Leader (Engineering Member) and a Squadron Leader (Aircrew Member). A legal advisor (Wing Commander) was appointed, and technical investigation assistance was provided by the Defence Accident Investigation Branch (Defence AIB).
Terms of Reference
The SI was tasked with investigating and determining the cause of the occurrence, including any contributory or aggravating factors. It also examined personnel duties, applicable policies and orders, training and qualifications, planning and preparation, supervision, fatigue, equipment serviceability, escape and survival facilities, and post-occurrence management. Additionally, the inquiry considered broader organizational and resource factors, including the use of outsourced civilian aircraft for test pilot training, and the Duty Holding construct for the Empire Test Pilot School (ETPS).
Parallel Investigation
The Air Accident Investigation Branch (AAIB) conducted a statutory investigation under the Civil Aviation Act 1982 and relevant regulations. The SI proceeded in parallel with the AAIB investigation, sharing pertinent information while respecting separate legal frameworks. The SI President maintained close liaison with the AAIB to ensure efficient use of resources.
Outcome
The SI submitted a provisional report to the Convening Authority. The report includes findings and recommendations to prevent recurrence. The probable cause of the accident is not stated in the provided source.