Sofema Aviation Services offers comprehensive 5-day classroom training dealing with regulatory & vocational issues facing an EASA Compliant Maintenance Planning Group.
Industry Steering Committee (ISC) Role
A team composed of delegates from:
- the proposed or actual operators,
- manufacturers, (does not “own” the process)
- Regulators -typically chair the process
The activities of the ISC are to essentially follow Advisory Circular AC 121-22A , based on: Use of ATA MSG 3 methodology to develop the scheduled maintenance program for a given aircraft systems structure and engines.
The ISC is tasked with:
Developing and establishing the policy for the development of the MRBR proposal Participation in the review and approval process of the ISC.
The document is termed the Policy and Procedures Handbook (PPH).
What is the Maintenance Review Board (MRB)?
A group led by the Airworthiness Authority which determines, by an issue of an MRB Report, the principles which should be applied to the development of a Maintenance Programme for an aircraft type or aircraft engine type. Through the life of the aircraft, further MRB Reports are issued as necessary to ensure that approved maintenance regimes continue to take full account of aircraft modifications and variants
MRB Working Groups following the instructions of the ISC and the process prescribed by MSG3
MRB delivers a completed document which is known as the Maintenance Review Board Report (MRBR).
The “MRB process” consists of all the activities performed to produce, review, accept and amend the Maintenance Review Board Report (MRBR).
The MRBR contains the minimum scheduled maintenance requirements for derivative or newly type certified aircraft (Aeroplanes and Rotorcraft).
The MRBR is included within an aircraft’s ICAs & meets part of the requirements of CS 25
The initial MRB report for any new aircraft is developed essentially in the absence of actual in-service experience.
As a result, the tendency is to be conservative in the decision-making process.
As service experience is accumulated, task intervals (thresholds/repeats) should be adjusted to reflect the results of actual in-service data.
The MRBR is used as the source document for the MPD.
What is the Maintenance Planning Document (MPD)?
A document that defines all tasks related to the performance of maintenance for a given aircraft
It provides the information needed to define the AMP.
MPDs are “task-driven” because of it:
refers to all maintenance task, identified by reference to accomplishment DATA and associates to relevant deadlines in terms of flight cycles, flight hours or calendar days.
The Maintenance Planning Document (MPD) contains:
- all the MRB requirements
- mandatory scheduled maintenance requirements.
What does the MPD identify?
In simple terms
Relevant planning Information for the accomplishment of aircraft maintenance.
Example: Tasks, Manhours and Required Skills.
After analysis & “proof of concept” in terms of reliability data, it is quite common for MRBR tasks to receive interval escalation in AMPs.
Sofema Aviation Services www.sassofia.com and Sofema Online www.sofemaonline.com offer multiple EASA Compliant Regulatory Training for details please see the websites or email office@sassofia.com or online@sassofia.com
