MEL and CDL MEL and CDL

category A

A Minimum Equipment List category requiring rectification of an inoperative item within a time period specified in the MEL, usually before next flight.

Quick answer: A Minimum Equipment List category requiring rectification of an inoperative item within a time period specified in the MEL, usually before next flight.

This term page is part of the Protermify Aviation glossary and is published as static HTML for fast indexing and clear language coverage.

Languages

Quick answer

A Minimum Equipment List category requiring rectification of an inoperative item within a time period specified in the MEL, usually before next flight.

Why it matters

category A matters because it supports clear communication in MEL and CDL MEL and CDL contexts for Pilots, Air Traffic Controllers, and Cabin Crew. It also connects to aviation training and exam language such as ICAO Level 4, ICAO Level 5, ICAO Level 6, and EASA FCL.055.

Editorial context

This page is rendered as static HTML from source-backed terminology data so search engines and AI systems can parse the content without client-side code.

Questions and answers

Questions and answers

What is category A?

In this glossary, category A refers to: A Minimum Equipment List category requiring rectification of an inoperative item within a time period specified in the MEL, usually before next flight.

How is category A used in aviation?

In aviation communication, this term appears in contexts such as: "Category A item inoperative, rectification required as specified in Minimum Equipment List."

Why does category A matter in aviation?

category A matters because it supports clear communication in MEL and CDL MEL and CDL contexts for Pilots, Air Traffic Controllers, and Cabin Crew. It also connects to aviation training and exam language such as ICAO Level 4, ICAO Level 5, ICAO Level 6, and EASA FCL.055.

Who uses category A?

category A is mainly used by Pilots, Air Traffic Controllers, and Cabin Crew.

What category does category A belong to?

In this glossary, category A is grouped under MEL and CDL MEL and CDL. Related pages in this category explain adjacent procedures, commands and operational concepts.

Where does this definition come from?

This definition is sourced from ICAO Doc 9432, FAA PCG and published by Protermify Aviation as a static aviation reference page.

Definition

A Minimum Equipment List category requiring rectification of an inoperative item within a time period specified in the MEL, usually before next flight.

Operational example

Category A item inoperative, rectification required as specified in Minimum Equipment List.

Definition language

English reference definition

Source

ICAO Doc 9432, FAA PCG

Exam relevance

  • ICAO Level 4
  • ICAO Level 5
  • ICAO Level 6
  • EASA FCL.055

Target audience

  • Pilots
  • Air Traffic Controllers
  • Cabin Crew

Related terms

Use the related links below to continue through connected aviation terminology.

Back to glossary