737 MAX Flight Crew Operations Manual
Engines, APU -
Controls and Indicators
MN-FLT-OH-201
7.10.17
3
Vibration (VIB) Pointer
Displayed (white) – engine vibration level.
Engine Start Switches
1
ENGINE START Switches
GRD –
• opens start valve
• closes engine bleed valve
• for ground starts, arms selected igniter(s) to provide ignition when
engine start lever is moved to IDLE
• for inflight starts, arms both igniters to provide ignition when engine
start lever is moved to IDLE
• releases to OFF at starter cutout.
OFF –
• ignition normally off
• both igniters are activated when engine start lever is in IDLE and:
•an uncommanded rapid decrease in N2 occurs or,
•N2 is between 65% and 50% or,
•in flight - N2 is between idle and 5%.
CONT –
• provides ignition to selected igniters when engine is operating and
engine start lever is in IDLE
• in flight - provides ignition to both igniters when N2 is below idle and
engine start lever is in IDLE.
FLT – provides ignition to both igniters when engine start lever is in IDLE.
ENGINE START
BOTH
L
GRD OFF CONT
FLT IGN
IGN
R
2
1
GRD OFF CONT
FLT
FORWARD OVERHEAD PANEL
2
1
March 1, 2021