Aviation English
MEL and CDL MEL and CDL

Qu'est-ce que ADIRS-1 hors service ?

ADIRS-1 hors service Primary ADIRS channel 1 failed; aircraft relying on remaining or standby navigation sources in accordance with MEL.

Source: ICAO Doc 9432, FAA PCG

How is “ADIRS-1 hors service” Used in Practice?

Centre, EAGLE 440, ADIRS-1 hors service, demandons route directe pour navigation dégradée.

Certification Exam Relevance

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

Who Needs to Know This Term?

  • Pilots
  • Air Traffic Controllers
  • Cabin Crew

Related Aviation English Terms

ADIRU de secoursunité de référence inertielleSystème de navigation inertielleDéviation compas

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Frequently Asked Questions

Qu'est-ce que ADIRS-1 hors service ?

Primary ADIRS channel 1 failed; aircraft relying on remaining or standby navigation sources in accordance with MEL.

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