737 MAX Flight Crew Operations Manual
Communications -
System Description
5.20.6
MN-FLT-OH-201
• MUSIC-music selection mode. To play music, press the MUSIC button.
The MUSIC light illuminates and a music selection screen appears on
the LCD, along with the corresponding codes. Enter the code for the
desired music title, using the KEY pad. The LCD will display the title
and a prompt for confirmation. If selection is correct, press the ENT
button, then press the START button.
• FLIGHT-Flight pattern auto announcement selection mode. Pressing the
FLIGHT button illuminates the FLIGHT button and an input prompt
appears on the LCD screen. Enter the desired flight pattern number and
the LCD will display the flight pattern number and title, and prompt for
confirmation. If the information is correct, press the ENT button. The
LCD will display "Flight Mode Ready" and the READY light will
illuminate. To initiate announcement playback, press the START button.
The messages for BLOCK 1 will play. After a message block has
completed, the subsequent message block will display. Initiate playback
by pressing the START button.
Call System
The call system is used as a means for various crewmembers to gain the attention
of other crewmembers and to indicate that interphone communication is desired.
Attention is gained through the use of lights and aural signals (chimes or horn).
The system can be activated from the flight deck, either flight attendant station, or
from the external power receptacle. Passengers may also use the system to call an
attendant, through the use of individual call switches at each seat.
The flight deck may be called from either flight attendant station or by the ground
crew. The ground crew may only be called from the flight deck. Flight Attendants
may be called from the flight deck, the other attendant station, or from any
passenger seat or lavatory. Master call lights in the passenger cabin identify the
source of incoming calls to the attendants.
Call system chime signals are audible in the passenger cabin through the PA
system speakers. The PA speakers also provide an alerting chime signal whenever
the NO SMOKING or FASTEN SEAT BELT signs illuminate or extinguish.
March 1, 2021