737 MAX Flight Crew Operations Manual
Supplementary Procedures -
Airplane General, Emer. Equip.,
Doors, Windows
MN-FLT-OH-201
SP.1.5
Power distribution panel number 1
• POT WATER COMPRESSOR
• WATER QTY IND
Oxygen Mask Microphone Test
YA201 - YA611, YA648 - YA657, YB271, YC453, YD256, YN107 - YN112
MASK/BOOM switch .................................................................. MASK
FLT INT switch ................................................................................Push
SPKR switch........................................................................................On
RESET/TEST switch ......................................................... Push and hold
EMERGENCY/Test selector .............................................Push and hold
Push-to-Talk switch ........................................................................... INT
Simultaneously push the Push-to-Talk switch, the
EMERGENCY/Test selector and the RESET/TEST switch.
Verify oxygen flow sound is heard through the flight deck speaker.
Push-to-Talk switch ..................................................................... Release
EMERGENCY/Test selector ....................................................... Release
RESET/TEST switch ................................................................... Release
SPKR switch............................................................................As needed
MASK/BOOM switch ..................................................................BOOM
ETOPS
Operators conducting ETOPS are required to comply with appropriate
regulations. An operator must have an ETOPS configured and approved
airplane, and approved flight operations and maintenance programs in
place to support ETOPS.
APU Operation
Unless otherwise authorized, start the APU before the ETOPS segment.
The APU must be on for the entire ETOPS segment.
March 1, 2021
