An Introduction to Boeing Maintenance Planning Data (MPD)

Boeing Maintenance Planning Data (MPD) – As an introduction we can assume the maintenance planning date, often referred to as the MPD is a pivotal tool for aircraft maintenance regarding tasks to be carried out for an aircraft to remain airworthy.

Some components such as Engines & APU maintenance details might not be fully covered in the MPD as is the case on some customised equipment and so each manufacturer might have their respective instructions to remain airworthy.

An MPD’s Structure can differ a little depending on the model of aircraft but as an example you are likely to find some of the following details for the tasks that are required.

  • A unique reference, the MPD item number.

MRB categories result from assessing a Maintenance Significant Item (MSI), linked to a Failure Effect Category (FEC), ranging from evident safety concerns to hidden non-safety issues.

  • Task Labels: Tasks have abbreviations for identification, such as:
    • LUB: Lubrication
    • OPC: Operational Check
    • GVI: General Visual Inspection
  • Task Timing: Each task has:
    • THRESHOLD: Initial execution time.
    • REPEAT: Subsequent execution time.

E.g., a task might start at 6000 Flight Hours (FH) or 18 months, with a similar repeat interval.

  • Zone & Access: Indicates specific aircraft zones for tasks and required access panels.


  • Applicability: Differentiates between airplane (APL) and engine (ENG) configurations. For instance, in the Boeing 787, this determines the pertinent tasks for specific configurations that might depend on model variant or engine type installed.

The MPD offers an in-depth guide for maintaining the aircraft and it outlines tasks, their timings, and applicability, ensuring aircraft safety and peak performance.

It is important to note that this is only one aspect of considerations when building an aircraft maintenance program, it takes many different documents and awareness of configuration to build a complete maintenance plan.

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