NAVIGATION AND
COMMUNICATION
AIRPLANE
OPERATIONS
MANUAL
2-18-24
Page
4
Code
01
MARCH 30, 2001
ACARS OPERATION
The Aircraft Communications Addressing and Reporting System
(ACARS) is controlled through the FMS Control and Display Units
(CDU) located on the control pedestal aft panel. The CDU provides
control functions and operating modes management for proper ACARS
operation. The FMS provides default data to the ACARS. Many
messages and requests have fields that are filled with FMS flight
progress data, but the flight crew can modify data by overriding that
value with a manual entry.
There are two types of ACARS data communications: ground to air via
uplink messages and air to ground via downlink messages. Once a
message is generated, it goes into transmission queue and when a
clear channel is obtained, the message is transmitted.
Uplink messages are generated by Airline Operations Centers (AOC),
ATC facilities or Data Link Service Providers (DSP). The message is
processed by the ACARS or, when the message is addressed for a
peripheral unit, is passed on. When an error free message has been
received, the ACARS generates a positive transmission
acknowledgment to the ground station, otherwise, a negative
acknowledgment is transmitted and the ground system should
retransmit the uplink message. The ACARS is capable of storing 25
blocks of uplink messages. When the message log is full the ACARS
will delete the oldest read message. If the message log contains 24
unread messages, the ACARS will announce a full message log to the
flight crew.
Downlink messages are generated by an occurred event or by the
flight crew. The messages are sent to a DSP, which then addresses
the messages to a designated AOC or ATC. ACARS transmits the
message having the highest priority. The ground system also
generates a positive acknowledgment for the message and transmits a
confirmation to the airplane. Upon receiving positive acknowledgment,
the ACARS deletes the message from the downlink queue. The
ACARS is capable of queuing 70 blocks of downlink messages.
Summary of Contents for EMB145
Page 3: ......
Page 610: ...EMERGENCY PROFILES AIRPLANE OPERATIONS MANUAL 1 03 95 Page 2 Code 03 SEPTEMBER 29 2000...
Page 611: ...AIRPLANE OPERATIONS MANUAL EMERGENCY PROFILES SEPTEMBER 29 2000 1 03 95 Page 3 Code 03...
Page 614: ...ABNORMAL PROFILES AIRPLANE OPERATIONS MANUAL 1 03 97 Page 2 Code 01 REVISION 25...
Page 615: ...AIRPLANE OPERATIONS MANUAL ABNORMAL PROFILES DECEMBER 20 2002 1 03 97 Page 3 Code 01...
Page 616: ...ABNORMAL PROFILES AIRPLANE OPERATIONS MANUAL 1 03 97 Page 4 Code 01 DECEMBER 20 2002...
Page 622: ...PERFORMANCE AIRPLANE OPERATIONS MANUAL 1 04 03 Page 4 Code 01 REVISION 34 INTENTIONALLY BLANK...
Page 1000: ...LOADING AIRPLANE OPERATIONS MANUAL 1 07 10 Page 4 Code 40 JUNE 28 2002 EMB 145 DOOR CLEARANCES...
Page 1070: ...AIRPLANE OPERATIONS MANUAL LOADING DECEMBER 20 2002 1 07 80 Page 3 Code 01...
Page 1072: ...AIRPLANE OPERATIONS MANUAL LOADING DECEMBER 20 2002 1 07 80 Page 5 Code 01...
Page 1074: ...AIRPLANE OPERATIONS MANUAL LOADING DECEMBER 20 2002 1 07 80 Page 7 Code 01...
Page 1367: ......
Page 1718: ...AIRPLANE OPERATIONS MANUAL ELECTRICAL MARCH 28 2002 2 05 10 Page 3 Code 01 CONFIGURATION 1...
Page 1720: ...AIRPLANE OPERATIONS MANUAL ELECTRICAL REVISION 22 2 05 10 Page 5 Code 01 CONFIGURATION 2...
Page 1724: ...AIRPLANE OPERATIONS MANUAL ELECTRICAL REVISION 23 2 05 10 Page 6C Code 01 CONFIGURATION 3A...
Page 1726: ...AIRPLANE OPERATIONS MANUAL ELECTRICAL REVISION 26 2 05 10 Page 7 Code 01 CONFIGURATION 3B...
Page 1766: ...AIRPLANE OPERATIONS MANUAL LIGHTING JANUARY 21 2002 2 06 05 Page 3 Code 01 COCKPIT LIGHTING...
Page 1768: ...AIRPLANE OPERATIONS MANUAL LIGHTING JANUARY 21 2002 2 06 05 Page 5 Code 01 GLARESHIELD PANEL...
Page 1770: ...AIRPLANE OPERATIONS MANUAL LIGHTING JANUARY 21 2002 2 06 05 Page 7 Code 01 OVERHEAD PANEL...
Page 1786: ...AIRPLANE OPERATIONS MANUAL LIGHTING JANUARY 21 2002 2 06 15 Page 7 Code 01 OVERHEAD PANEL...
Page 1792: ...AIRPLANE OPERATIONS MANUAL LIGHTING JANUARY 21 2002 2 06 20 Page 5 Code 01 OVERHEAD PANEL...
Page 1827: ...FUEL AIRPLANE OPERATIONS MANUAL 2 08 00 Page 2 Code 01 REVISION 17 INTENTIONALLY BLANK...
Page 1940: ...AIRPLANE OPERATIONS MANUAL POWERPLANT JUNE 28 2002 2 10 70 Page 5 Code 01 THRUST REVERSER...
Page 2030: ...AIRPLANE OPERATIONS MANUAL FLIGHT CONTROLS REVISION 19 2 13 20 Page 3 Code 01 RUDDER SCHEMATIC...
Page 2052: ...AIRPLANE OPERATIONS MANUAL FLIGHT CONTROLS REVISION 18 2 13 30 Page 3 Code 01 FLAP SCHEMATIC...
Page 2060: ...AIRPLANE OPERATIONS MANUAL FLIGHT CONTROLS JUNE 29 2001 2 13 35 Page 5 Code 01 CONTROL STAND...
Page 2159: ...AIRPLANE OPERATIONS MANUAL OXYGEN OCTOBER 02 2001 2 16 10 Page 3 Code 01 MAIN OXYGEN CYLINDER...
Page 2160: ...OXYGEN AIRPLANE OPERATIONS MANUAL 2 16 10 Page 4 Code 01 OCTOBER 02 2001 OXYGEN SERVICE PANEL...
Page 2176: ...OXYGEN AIRPLANE OPERATIONS MANUAL 2 16 20 Page 2 Code 01 REVISION 20 INTENTIONALLY BLANK...