MEL and CDL MEL and CDL

ADIRU di riserva

Independent backup ADIRU providing attitude, heading, and air-data when primary systems are degraded or failed.

Quick answer: Independent backup ADIRU providing attitude, heading, and air-data when primary systems are degraded or failed.

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

Independent backup ADIRU providing attitude, heading, and air-data when primary systems are degraded or failed.

Why it matters

ADIRU di riserva 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 ADIRU di riserva?

In this glossary, ADIRU di riserva refers to: Independent backup ADIRU providing attitude, heading, and air-data when primary systems are degraded or failed.

How is ADIRU di riserva used in aviation?

In aviation communication, this term appears in contexts such as: "Avvicinamento, SKY 521, su ADIRU di riserva, precisione ridotta; richiediamo vettori per finale."

Why does ADIRU di riserva matter in aviation?

ADIRU di riserva 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 ADIRU di riserva?

ADIRU di riserva is mainly used by Pilots, Air Traffic Controllers, and Cabin Crew.

What category does ADIRU di riserva belong to?

In this glossary, ADIRU di riserva 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

Independent backup ADIRU providing attitude, heading, and air-data when primary systems are degraded or failed.

Operational example

Approach, SKY five two one, now on standby air-data inertial reference unit, navigation accuracy reduced, requesting vectors to final.

Localized term

ADIRU di riserva

Localized example

Avvicinamento, SKY 521, su ADIRU di riserva, precisione ridotta; richiediamo vettori per finale.

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