Ice Protection

© 2011 Tron Aviation

Flight Operations and Pilot Training Program

Version 3.0

• System Overview– Windshield Heat– Heated Air Data Probes and Ports – Heated Engine Inlet Cowls – Leading Edge De-ice Boots– Ice Protection System Limitations

• System Operation– Windshield Heat– Heated Air Data Probes and Ports– Heated Engine Inlet Cowls– Leading Edge De-Ice Boots– Controls and Indications

• Anti/De-ice system malfunction indications and color-logic• Ice protection system CAS messages

• System Review

What You Will Learn

System Overview

System Overview

• Windshield Heat– Heated mats placed in both left and right windshields

• Heated air data probes and ports– Electrically heated probes and ports– Probes automatically regulate, monitored by the ACS

• Heated Engine Inlet Cowls– Powered by engine bleed air– Anti-ice feature to provide ice ingestion prevention

• Leading Edge De-Ice boots – Provide de-ice capability– On wing & horizontal stabilizer leading edges

Limitations & Specifications

• Flight into known icing conditions is prohibited

• Use of Windshield Heat is prohibited

• Use of Leading Edge De-Ice Boots is prohibited

System Operation

Flight Operations and Pilot Training Program

Version 3.0

Windshield Heat

• Both the right and left windshields have a heater mat which will cause super cooled liquid water to remain in a liquid state while in contact with the windshield

• After selected On by the pilot, the ACS automatically cycles windshield heat on and off to prevent windshield overheat which would occur at 180°F

Heated Probes and Ports

• All probes are self-regulating and automatically heated for both ground and flight operations

• Are monitored by the ACS for overheat protection

• Begin heat cycle with at least one engine running or if selected ON by the pilot

Heated Engine Inlet Cowl

• Engine cowls are heated with engine bleed air

– Bleed air is ducted through piccolo tubes which deliver hot air to a large surface area around the cowl

– The air is then dumped overboard through an exhaust port

– Take off performance will be reduced when ANTI ICE is onExhaust Port

Piccolo Tube inlet port Inlet Lip

Attachment Flange

Leading Edge De-Ice Boots

• Engine bleed air is fed through a regulating valve on engine to:

– A pneumatic distribution valve to inflate and deflate the boot

OR– To engine inlet cowls for engine anti-ice

– After the air has been used to heat the cowls it is dumped overboard

Controls and Indications

Flight Operations and Pilot Training Program

Version 3.0

Controls and IndicationsTwo Position Ice LightThree Position Engine/Wing Switch

Ice Protection Synoptic

• Anti/De-ice also controlled and monitored

on the ICE protection synoptic page

Synoptic Page

• Color Logic…

• White Outline: means the system is off

• Green: means the system is on

• Amber: means the system has failed

Abnormal Operations

Flight Operations and Pilot Training Program

Version 3.0

Pitot Heat Failure

• Pitot Heat Failure

– CAS message will be displayed on MFD

– Probe will be displayed in amber on ICE synoptic page

Windshield Heat Sensor Fault

• Embedded windshield temperature sensor has failed

• Associated temperature display turns red with three dashes

• L (R) WSHLD HEAT FAULT advisory CAS message is displayed

Engine Anti-ice Failure

• Engine inlet anti-ice failure during flight...

• L (R) ENG A/ICE FAIL caution message appears on MFD

• Note: Previous CAS message will also appear if the system is switched on and the inlet temperature sensor remains cold, indicating no airflow

• Failure indicated on the ice protection synoptic by amber colored engine cowls

System Review

Flight Operations and Pilot Training Program

Version 3.0

Review

• What color will be indicated on the MFD ICE Protection synoptic page when a boot has failed?– The boot will appear in yellow

• If engine cowl anti-ice is needed for takeoff, what should the pilot expect?– Reduced takeoff performance due to engine bleed air being used for engine cowl

heating

• How is air data probe/port heat controlled?– Probe/port heat is self-regulated, monitored by ACS

• Are wing boots considered DE-ICE or ANTI-ICE?– DE-ICE