4
$\begingroup$

What's the difference between FMS (Flight management System), and FMC (Flight management computer)?

Can the flight management computer be thought of as what's manipulating the input information from the performance/navigation databases, and the FMS as being what actually provides the information?

I understand the information that's involved with the system, I'm just trying to define the difference based off an analogy of sorts.

$\endgroup$
10
$\begingroup$

enter image description here
(Own work)

The FMC is part of the FMS.

The FMC is a computer system that uses a large data base to allow routes to be pre-programmed and fed into the system by means of a data loader.

The FMS encompasses:

  • The Flight Management Computer (FMC)
  • The Automatic Flight Control or Automatic Flight Guidance System (AFCS or AFGS)
  • The Aircraft Navigation System
  • An Electronic Flight Instrument System (EFIS) or equivalent electromechanical instrumentation.

Further reading: Flight Management System (SKYbrary)

$\endgroup$
  • 1
    $\begingroup$ Typically, the CDU's (or MCDU's) are considered part of the FMS as well. $\endgroup$ – Ralph J May 23 at 22:12

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.