Engine Air System Flashcards
(14 cards)
What percentage of the primary airflow is mixed with fuel and combusted?
20% to 25%
Which component/area is supplied with air when the inducer vent operates above approximately 97.5% NG?
Low Pressure (LP) compressor
When the NG is below approximately 97.5% the inducer vent relieves which area of the engine of excess pressure?
1st stage Low Pressure (LP) compressor
Within the engine air system what condition is the Acceleration Bleed Valve (ABV) in when it “fails safe”?
De-energised closed (acceleration control lost ECU is degraded)
How is anti-icing achieved on the aircraft’s engine intake fairings?
By electrothermally heated matting
With electrical power ON, what is the state of the engine’s anti-ice air bleed valve solenoid and the valve when the engine anti-icing system is selected to OFF?
Solenoid energised, anti-icing valve closed
Where are the engine anti-icing ON/OFF push button indicators located?
On the right side of the overhead console
What is the location of the anti-ice test switch?
Panel KG, right side of the interseat console below right hand collective lever
The Ice Protection Control Unit’s (IPCU) Continuous Built-In Test (CBIT) has generated a [DE-ICE2 FAIL] caution on the Warnings, Cautions and Advisories (WCA) window. What does this signify?
The CBIT has detected a fault in the oil cooler inlet de-ice zones - No. 2 engine intake anti-icing system is unaffected
What does the Integrated Display Unit (IDU) Warnings, Cautions and Advisories (WCA) green advisory alert [ANTI-ICE1] signify?
The No. 1 intake anti-icing system is switched on and the anti-ice air bleed valve open
Which type of engine air is used for engine anti-icing purposes?
P2.5 air and/or P3.0 air
Which condition will initiate an [ENG# A/ICE] caution on the Warnings, Cautions and Advisories (WCA) area of the Integrated Display Unit (IDU)?
A difference between the anti-ice switch selection and the expected feedback from the anti-ice port pressure switch
What is the normal operating temperature range of the electrically heated engine intake mats?
65 °C to 140 °C
Within the engine intake anti-icing system how is a critical failure indicated within the cockpit?
A [INTAKE# A/ICE] Warnings, Cautions and Advisories (WCA) caution, a green ON and yellow FAIL on the engine anti-ice push button indicator
