Regulation

Regulatory Article (RA) 5405: special instructions (technical)

RA covering the responsibilities for review of special instructions (technical) (SI(T)) for their effect on the aircraft and / or equipment safety assessment.

• From: Ministry of Defence and Military Aviation Authority
• Published: 1 December 2014
• Last updated: 28 November 2025 — See all updates

Documents

RA 5405: special instructions (technical)

Ref: Issue 11

PDF, 145 KB, 6 pages

MAA special instructions (technical) template

Ref: Version 3

ODT, 26.5 KB

This file is in an OpenDocument format

MAA special instructions (technical) template (open format)

Ref: Version 3. Please only use this document if you are unable to access the MS Word version of this document above.

PDF, 148 KB, 4 pages

Details

The purpose of Regulatory Articles (RA) is to provide the framework of policy, rules, directives, standards, processes and the associated direction, advice and guidance, which governs military aviation activity and against which air safety is assessed. The regulator develops regulations in response to applicable UK law, MOD needs, legal changes and recommendations resulting from both assurance or investigation functions.

Related information:

• MAA regulatory publications
• Overarching documents
• Regulatory Articles (RA)
  • 1000 series (GEN)
  • 2000 series (FLY)
  • 3000 series (ATM)
  • 4000 series (CAE)
  • 5000 series (TAE)
• MAA Manuals

• Last updated: 28 November 2025
  Show all updates

  1. 28 November 2025

     Issue 11 has been published under NAA 25/50.

  2. 30 November 2023

     Issue 10 has been published under NAA 23/60

  3. 25 May 2023

     Issue 9 has been published under NAA 23/27

  4. 19 July 2022

     Issue 8 of RA 5405 and Version 3 of RA 5405 Special Instructions (Technical) Template have been published under NAA 22/17.

  5. 13 December 2021

     Issue 7 has been published under NAA 21/72.

  6. 13 January 2021

     Special instructions (technical) template - version 2 has been published under NAA 21/01.

  7. 30 November 2020

     RA 5405 Issue 6 and Version 1 of MAA Special Instructions (Technical) Template have been published under NAA 20/42.

  8. 19 February 2019

     Issue 5 has been published under NAA 19/02.

  9. 31 May 2018

     Issue 4 has been published under NAA 18/13.

  10. 25 August 2016

      Issue 3 has been published under NAA 16/20.

  11. 1 December 2014

      First published.