737 MAX Flight Crew Operations Manual
Anti-Ice, Rain -
System Description
MN-FLT-OH-201
3.20.5
Note:
Stall warning logic adjusts stick shaker and minimum maneuver speed bars
on the airspeed indicator. FMC displayed VREF is not adjusted
automatically.
Note:
Stall warning logic, airspeed indications, and minimum maneuver speeds
on the airspeed indicator return to normal when engine anti–ice is
positioned OFF if wing anti–ice has not been used in flight.
Note:
When ENG ANTI-ICE switches are OFF, the EEC selects flight idle when
flaps are less than 15 degrees; approach idle when flaps are 15 degrees or
greater.
If the cowl anti–ice valve fails to move to the position selected by the ENG
ANTI–ICE switch, the COWL VALVE light illuminates and remains illuminated,
and an amber TAI indication illuminates on the engine display after a short delay.
The amber COWL ANTI–ICE light illuminates due to excessive pressure in the
duct leading from the cowl anti–ice valve to the cowl lip.
Flap Setting
Engine Idle Speed
UP
Icing Idle
Less than 15 Degrees
Approach Idle
15 Degrees or Greater
Approach Idle
March 1, 2021