737 MAX Flight Crew Operations Manual
Fire Protection -
Controls and Indicators
8.10.8
MN-FLT-OH-201
Down –
• arms APU BOTTLE DISCHARGE switch (on this panel only)
• closes APU fuel shutoff, bleed air valve and APU inlet door
• trips generator control relay and breaker.
3
APU Fire Warning HORN CUTOUT Switch
Push –
• silences fire alarm bell
• silences APU fire warning horn
• causes APU fire warning light to stop flashing but remain illuminated.
4
APU Fire Warning Light
Illuminated (red flashing) – indicates fire in APU.
Note:
Also, flight deck fire warning bell sounds and APU fire warning horn in
main wheel well sounds.
Illuminated (red steady) – indicates APU fire warning HORN CUTOUT switch
has been pushed following an APU fire indication.
Lavatory Fire
Lavatory Smoke Detection
Photoelectric Smoke Detector
(
Typical
)
1
2
3
March 1, 2021