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The establishment of the Master Minimum Equipment List (MMEL), if applicable, is carried out by:

  • A
    The Operator of the aircraft, and accepted by the manufacturer.
  • B

    The Manufacturer of the aircraft, and accepted by the authority.

  • C

    The Manufacturer of the aircraft, but need not to be accepted by the authority.

  • D

    The Operator of the aircraft, and accepted by the authority.

The Master Minimum Equipment List (MMEL) is a document approved by the aviation regulatory Agency or Authority and establishes the aircraft equipment allowed to be inoperative under conditions specified for a specific type of aircraft.

The MMEL is produced by the aircraft manufacturer.

On the other hand, the Minimum Equipment List (MEL) is a document that lists equipment that may be temporarily inoperative at the commencement of the flight. (An inoperative item means that the item does not accomplish its intended purpose or is not consistently functioning within its approved operating limits or tolerances).

This document is produced by the Operator for their own particular aircraft taking into account of the:

  • Aircraft configuration

  • Operating environment;

  • Route;

  • Structure;

  • Geographic location and

  • Maintenance capabilities.

The MEL is approved by the Competent Authority.

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