Aviation English
MEL and CDL MEL and CDL

What is Interphone inoperative?

Interphone inoperative Internal crew communication system not functioning, affecting cockpit-cabin coordination and triggering MEL action.

Source: ICAO Doc 9432, FAA PCG

How is “Interphone inoperative” Used in Practice?

Tower, JET seven eight nine, cabin interphone is inoperative; request priority return to gate.

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

Public address systemCabin interphonecabin intercommunication systemCabin Log Defect

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Frequently Asked Questions

What is Interphone inoperative?

Internal crew communication system not functioning, affecting cockpit-cabin coordination and triggering MEL action.

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