737 MAX Flight Crew Operations Manual
Fire Protection -
Controls and Indicators
MN-FLT-OH-201
8.10.9
1
Status Indicator Light
Illuminated (green) -
• steady - smoke detector has power and is operating properly
• blinking - maintenance is required
Illuminated (red) -
• steady - smoke has been detected
• blinking - detector has failed
2
Self-Test Switch
Push -
• alarm horn sounds
• Status Indicator Light illuminates red
• external horn sounds
3
Horn Cancel Switch
Push -
• alarm horn is silenced
Note:
When the Cancel switch is released and smoke is not sensed for 30
seconds, the smoke detector is automatically reset.
March 1, 2021