737 MAX Flight Crew Operations Manual
Automatic Flight -
Controls and Indicators
4.10.2
MN-FLT-OH-201
OFF – disengages A/T and prevents A/T engagement.
2
Changeover (C/O) Switch
Push –
• changes IAS/MACH display between IAS and MACH
• automatic changeover occurs at approximately FL260.
3
MCP Speed Condition Symbols
Overspeed or underspeed limiting symbol appears when commanded speed
cannot be reached.
Underspeed limiting (flashing character “A”) – minimum speed
Overspeed limiting (flashing character “8”) –
• Vmo or Mmo limit
• landing gear limit
• flap limit.
4
IAS/MACH Display
Displays speed selected by IAS/MACH selector
• display is blank when:
•VNAV mode engaged
•A/T engaged in FMC SPD mode
•during 2 engine AFDS go–around.
• displays 100 knots when power is first applied
• display range is:
•100 KIAS – Vmo in 1 knot increments
•.60M – Mmo in .01M increments.
5
N1 Switch
Push – (light not illuminated)
• engages A/T in N1 mode if compatible with AFDS modes already
engaged
• illuminates N1 switch light
• annunciates N1 autothrottle mode.
Push – (light illuminated)
• deselects N1 mode and extinguishes switch light
• engages autothrottles in ARM mode.
March 1, 2021