Inoperative Unit is not powered by an Emergency Bus, or equivalent and is not required to accomplish Emergency Procedures,
Remaining RMU/RTU is operative, and
Alternate procedures are established and used.
Confirm that inoperative RMU is not powered by PE Bus.
Confirm operative RMU/RTU functionality.
Crew will establish and coordinate using alternative procedures.
10-1
Communications System (VHF, UHF)
D
-
-
Any in excess of those required by FAR may be inoperative provided they are not powered by the XE or PE Bus and are not required for emergency procedures.
1)
VHF Comm Control Panels (Except RMU/RTU or Pro Line 21 Equipped Aircraft)
SATCOM coverage is available over the intended route of flight, and
If SATCOM Voice is to be used over the intended route of flight, SATCOM Voice short codes (INMARSAT) or direct dial commercial numbers (IRIDIUM) must be available. If not available, prior coordination with the appropriate ATS (FIR) facility is required.
NOTE SATCOM is to be used only as a backup to normal communications unless otherwise authorized by the appropriate ATS facilities.
Confirm that remaining HF COMM system is operative.
Confirm that SATCOM Data link is operative.
Prior to flight, confirm that SATCOM Data link service is available for intended route of flight.
D
-
-
Any in excess of those by FAR may be inoperative.
20-1
***
SELCAL
C
-
0
(O) May be inoperative provided alternate procedures are established and used.
D
-
0
(O) May be inoperative provided procedures do not require its use.
1)
Channels
C
-
0
(O) May be inoperative provided alternate procedures are established and used.
D
-
0
(O) May be inoperative provided procedures do not require its use.
20-2
***
ACARS System
C
-
0
(O) May be inoperative provided alternate procedures are established and used.
Voice or other communication will be used between the aircraft and the ground.
D
-
0
(O) May be inoperative provided procedures do not require its use.
20-3
***
AFIS (VHF / SAT)
C
-
0
(O) May be inoperative provided alternate procedures are established and used.
Place INOP placard on AFIS panel.
Prior to flight, determine alternate communication to be used.
D
-
0
(O) May be inoperative provided procedures do not require its use.