737 MAX Flight Crew Operations Manual
Normal Procedures -
Amplified Procedures
MN-FLT-OH-201
NP.21.4
Verify that the PASS OXY ON light is extinguished.
Landing gear indicator lights ................................ Verify illuminated
Flight recorder switch ................................................... Guard closed
MACH AIRSPEED WARNING
TEST switches ..........................................Push and hold one at time
Verify that the clacker sounds.
STALL WARNING TEST switches ..........Push and hold one at time
Verify that each control column vibrates when the respective
switch pushed.
Note:
the stall warning test requires that AC transfer busses are
powered for up to 4 minutes.
Note:
with hydraulic power off, the leading edge flaps may droop
enough to cause an asymmetry signal, resulting in a failure
of the stall warning system test. Should this occur, obtain a
clearance to pressurize the hydraulic system, place the “B”
system electric pump ON and retract the flaps. When flaps
are retracted repeat the test. At the completion of the test,
turn the “B” system electric pump “OFF”.
INTERNET - SAT TX CONTROL switches (as installed) ..... Check
Verify that the “TRANSMIT” switch is illuminated “NORMAL”.
Verify that the “MUTE” switch is blanked.
Circuit breakers (P6 panel) ...................................................... Check
Manual gear extension access door ......................................... Closed
Circuit breakers (control stand, P18 panel) .............................. Check
Note:
check circuit breakers position carefully in flights after
maintenance service or overnights. CBs may be found pulled
due to maintenance action.
March 1, 2021