Communication System and ACARs

Question 1

Describe the DVDR

Answer 1

the Digital Voice Data Recorder System combines a flight data recorder and a cockpit voice recorder in a single unit, two are installed

Question 2

DVDR locations

Answer 2

forward electronics bay and aft electronics bay

Question 3

How long can the DVDR record

Answer 3

2 hours of audio

25 hours of data

Question 4

NAVCOM 1 or 2 FAIL caution

Answer 4

all function hosted in associated MRC are unavailable

Question 5

NAVCOM 1 or 2 OVHT caution

Answer 5

MRC NIM has suffered an over temperature condition

Question 6

VALIDATE CONFIG caution

Answer 6

top level system part number was updated

Question 7

VHF 1 or 2 or 3 OVHT caution

Answer 7

VHF COM has suffered an over temperature condition

Question 8

VHF 3 FAIL caution

Answer 8

radio 3 COM function has failed

Question 9

CMC FAIL advisory

Answer 9

CMC has failed

Question 10

CMF 1 or 2 FAIL advisory

Answer 10

the respective CMF has failed

Question 11

CVR AFT or FWD FAIL advisory

Answer 11

respective DVDR CVR function has failed

Question 12

FDR AFT or FWD FAIL advisory

Answer 12

respective DVDR function has failed

Question 13

What is the CMF

Answer 13

communication management function provides character oriented communication through ACARS network and communication between different airplane devices