Project MS 16/04 - Amendment to Part 42 MOS to include certain regular maintenance requirements currently covered by airworthiness directives
Following a review of Australian unique airworthiness directives (ADs) a number of recurring maintenance related ADs were identified that did not fully satisfy the criteria for issuing of an AD under Part 39 of CASR.
ADs are generally issued to rectify design deficiency or to rectify production or manufacturing fault in a particular aircraft type or in particular equipment. However, these unique ADs are not meant to address any design deficiency or a production or manufacturing fault and they relate to aircraft systems and equipment that are generally common to all aircraft types.
The system and equipment covered by these ADs are essential for safe operation of an aircraft and the maintenance requirements contained in these ADs are there to ensure continuing serviceability of these systems and equipment. So, the requirements of the ADs should ideally be treated as maintenance program instructions.
CASA has therefore decided to include the requirements of these ADs in the Part 42 MOS as additional maintenance that must be included in an aircraft’s maintenance program.
In many cases the maintenance requirements may already be covered by the aircraft or equipment manufacturer’s instructions for continuing airworthiness (ICA) and in such cases the MOS would require compliance with the ICA instead of compliance with the requirements of MOS.
CASA considers relocation of these AD requirements in the MOS would provide better transparency in relation to having all maintenance program requirements for aircraft in one document.
The objective of the project is to amend of Part 42 MOS to include a number of recurring AD requirements in the MOS.
This project was approved by the EM, Standards Division 27 May 2016.
Part 42 MOS
Project Leader: Ifte Ahmed
Project Sponsor: EM Standards Division
|Consultation updates in 2017|
|CD 1611MS - Transfer of certain recurring maintenance requirements from ADs to the Part 42 MOS||Please forward your response to the Project Leader, Iftekhar Ahmed, by email to firstname.lastname@example.org by close of business 10 March 2017.||7 February 2017|
|Consultation updates in 2016|
|MS 16/04 - Amendment to Part 42 MOS to include certain regular maintenance requirements currently covered by airworthiness directives||Project approved.||7 June 2016|