KLM MD-11 - Ice and Rain Protection; Airfoil Anti-Ice System

MD-11 Flight Crew Operations Manual
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Ice and Rain Protection Chapter Ice
Description and Operation Section 10
Ice.10.1
Ice.10 Ice and Rain Protection-Description and Operation
General
Ice and rain protection consists of:
• Airfoil (wing and tail) anti-ice systems.
• Engine cowl anti-ice system.
• Air data heater system (pitot, static, TAT).
• Windshield/window anti-ice and defog systems.
• Windshield wiper system.
• Ice detection system.
• Miscellaneous heating systems.
The ice detection system will primarily be used in the automatic mode.
The Environmental Systems Controller (ESC) monitors engine cowl anti-ice
system operation.
The Pneumatic Systems Controller (PSC) monitors wing and horizontal stabilizer
anti-ice system operation.
The Miscellaneous Systems Controller (MSC) automatically controls and
monitors pitot tube, static port, and AOA heater operation.
Ice and rain protection controls are located on the forward overhead panel. Alerts
are displayed on the Engine and Alert Display (EAD) and System Display (SD) to
provide system status information to the crew.
The AIR cue switch illuminates when alerts related to wing, tail, engine anti-ice,
and ice detection system (if installed) are displayed.
The MISC cue switch illuminates when alerts related to air data heaters,
windshield heat, or defog are displayed.
Airfoil Anti-Ice System
The airfoil anti-ice systems consist of the wing anti-ice system and the tail
(horizontal stabilizer) anti-ice system. Pushing the WING and TAIL ANTI-ICE
switches ON prior to takeoff arms the airfoil anti-ice systems to function
automatically when left and/or right ground sense mechanisms sense flight.
The two PSCs provide the following functions:
• Controls pneumatic system temperature and pressure requirements for ice
protection.
• Monitors horizontal stabilizer anti-ice valve position.
• Monitors system ducts for leaks.
October 02, 2006