Environmental Flashcards
How many fresh air vents are there in the cabin?
6 fresh air vents
Two on the left and right side of the instrument panel, two behind the front seats for the rear cabin, and two overhead vents.
Where is the air intake for cabin vents located?
On the leading edge of the right wing, between the fuselage and right engine nacelle
This location may cause a slight smell of diesel exhaust inside the cabin during slow flight and emergency descents.
What flows through the heat exchangers for cabin heat and defrost?
Engine coolant
The heat exchangers are located inside the main duct on the bottom front of the engine nacelle.
Where are the cabin heat and defrost air intakes located in the DA42NG?
On the outboard side of the engine nacelles, just above the engine exhaust pipe.
What do the control levers inside the cabin determine?
How much, if any, heated air enters the cabin.
Which engine provides warm air for defrosting the windscreen?
The left engine.
Which engine provides warm air for cabin heat?
The right engine.
True or False: The cabin heat and defrost air intakes are located on the inboard side of the engine nacelles.
False.
Fill in the blank: The fresh air intake location may cause a slight smell of _______ inside the cabin.
diesel exhaust.
What does RACC stand for?
Recirculating Air/Cabin Cooling
What aircraft models can have the optional RACC installed?
DA42NG and DA42VI
Where is the VCM installed in the aircraft?
In the rear baggage extension
What powers the VCM?
A dedicated alternator mounted on the left engine
Where is the VCM hot air exhaust located?
On the upper left side, behind the rear door
Where is the VCM air intake located?
Underneath the baggage compartment
What does the RACC control panel replace in the cockpit?
Pilot’s cup holder on the left side
What must be turned ON to activate the dedicated alternator for RACC?
AUX POWER switch
How do you activate the VCM?
Press and hold the RACC power button
What controls the cabin air flow in the RACC system?
Fan speed control buttons
What is displayed on the temperature readout of the RACC?
Degrees Celsius
How do you turn the RACC off?
Press and hold the RACC power button, then turn the AUX POWER switch OFF
By how much is the rate of climb reduced with RACC turned ON?
70 FPM
By how much is cruise speed reduced with RACC turned ON?
5%
When must RACC be OFF during flight operations?
During engine start, takeoff, landing, go-around, abnormal and emergency procedures, when outside air temperature is below 10˚C, above 10,000 feet MSL, when ADF is in use, and when Stormscope® is in use
Fill in the blank: RACC must be OFF when outside air temperature is below _______.
10˚C
True or False: RACC can be used during engine start.
False
What is the function of the temperature control buttons in the RACC system?
To increase or decrease the desired cabin temperature
