737 MAX Flight Crew Operations Manual
Engines, APU -
Controls and Indicators
MN-FLT-OH-201
7.10.5
4
N1 RPM Readouts (digital)
Displayed (white) – normal operating range.
Displayed (red) –
• operating limit exceeded
• on ground after engine shutdown, red box indicates an inflight
exceedance has occurred.
5
Reference N1 Readouts
Displayed (green) –
• manually set N1% RPM when N1 SET is not in the AUTO selection in
the N1/SPD REF SET display
• – – – – when N1 SET is in the AUTO selection in the N1/SPD REF SET
display and FMC source invalid
• when N1 SET is in the AUTO selection in the N1/SPD REF SET
display, indicates fixed derate, assumed temperature derate, or a
combination of fixed and assumed temperature derate
Not Displayed when Reverse Thrust is selected.
6
N1 RPM Indications
Displays N1% RPM:
• displayed (white) – normal operating range
• displayed (red) – operating limit exceeded.
7
N1 Maximum Bug
Displayed (amber) –
• N1 value for full rated thrust
• computed by the EEC through all phases of flight.
• upper limit for autothrottle operation.
Not displayed when reverse thrust is selected.
March 1, 2021
