Communications between the various crewmembers aboard military airplanesis typically accomplished by means of interconnected electronic devices.The interphone system is a vital part of the equipment required for efficientand coordinated flight crew operations. Pilots communicate with navigatorsfrequently to assure mutual understanding of headings to fly, time to goand estimates to targets or destinations. Pilots and co-pilots communicateover the interphone on matters related to control and flight procedures,coordinating accomplishment of checklists, switch settings and the like.Interphones are absolutely essential.
This is a companion discussion topic for the original entry at https://www.avweb.com/flight-safety/interphone-overkill