MEL and CDL MEL and CDL

Out-of-phase check

Maintenance inspection not aligned with normal cycle, scheduled according to special interval or condition.

Quick answer: Maintenance inspection not aligned with normal cycle, scheduled according to special interval or condition.

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Languages

Quick answer

Maintenance inspection not aligned with normal cycle, scheduled according to special interval or condition.

Why it matters

Out-of-phase check 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 Out-of-phase check?

In this glossary, Out-of-phase check refers to: Maintenance inspection not aligned with normal cycle, scheduled according to special interval or condition.

How is Out-of-phase check used in aviation?

In aviation communication, this term appears in contexts such as: "Landing gear out-of-phase check required after hard landing, as per maintenance instruction."

Why does Out-of-phase check matter in aviation?

Out-of-phase check 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 Out-of-phase check?

Out-of-phase check is mainly used by Pilots, Air Traffic Controllers, and Cabin Crew.

What category does Out-of-phase check belong to?

In this glossary, Out-of-phase check 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

Maintenance inspection not aligned with normal cycle, scheduled according to special interval or condition.

Operational example

Landing gear out-of-phase check required after hard landing, as per maintenance instruction.

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

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