MEL and CDL MEL and CDL

カテゴリーD

A Minimum Equipment List category requiring rectification of an inoperative item within 120 consecutive calendar days, excluding the day of discovery.

Quick answer: A Minimum Equipment List category requiring rectification of an inoperative item within 120 consecutive calendar days, excluding the day of discovery.

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Quick answer

A Minimum Equipment List category requiring rectification of an inoperative item within 120 consecutive calendar days, excluding the day of discovery.

Why it matters

カテゴリーD 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

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Questions and answers

Questions and answers

What is カテゴリーD?

In this glossary, カテゴリーD refers to: A Minimum Equipment List category requiring rectification of an inoperative item within 120 consecutive calendar days, excluding the day of discovery.

How is カテゴリーD used in aviation?

In aviation communication, this term appears in contexts such as: "カテゴリーD項目が故障、MELにより120日まで修理が許可。"

Why does カテゴリーD matter in aviation?

カテゴリーD 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 カテゴリーD?

カテゴリーD is mainly used by Pilots, Air Traffic Controllers, and Cabin Crew.

What category does カテゴリーD belong to?

In this glossary, カテゴリーD 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 120 consecutive calendar days, excluding the day of discovery.

Operational example

Category D item inoperative, MEL allows up to 120 days for rectification.

Localized term

カテゴリーD

Localized example

カテゴリーD項目が故障、MELにより120日まで修理が許可。

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.

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