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1.
The Pack Bilevel PRSOV is commanded
open when:
A. The PACK S/I is depressed and the
legend says “ON.”
B. The PACK S/I is depressed and “OFF”
legend is extinguished.
C. The HI FLOW S/I is depressed and the
“OFF” legend is extinguished.
D. The L and R BLEED S/Is are de-
pressed and the “ON” legends illu-
minate.
2.
When the airplane is on the ground, air
circulation is provided by:
A. Engine or APU bleed-air with PACK
S/I on.
B. Ram air.
C. Crew and cabin fan system.
D. Auxiliary ground cooling system.
3.
The primary source of cabin/cockpit heat-
ing inflight is through the:
A. Emergency pressurization valve.
B. Ram air check valve.
C. Anti-ice control valve.
D. Cabin/Cockpit temperature control
valves.
4.
Illumination of the CAB DUCT OVHT
annunciation on EICAS indicates:
A. The cockpit overtemperature limiter
has detected a duct temperature over
300° F.
B. The cabin temperature sensor has mal-
functioned and MANUAL TEMP
should be selected.
C. The cabin overtemperature sensor has
detected a duct temperature over 300°
F.
D. The ACM overtemperature switch has
detected a temperature that exceeds
450° F in the ECU.
5.
Which airplane environmental control
system requires no pilot monitoring or
regulation?
A. Air conditioning system when AUTO
is selected.
B. Instrument panel cooling system.
C. Baggage compartment heating sys-
tem.
D. Air conditioning system when MAN-
UAL TEMP is selected.
6.
In the event of inflight dual generator
failure, the cockpit/cabin temperature
control system:
A. Must be operated in manual.
B. Must be operated in automatic.
C. Is inoperative.
D. May be operated in manual or auto
mode.
7.
In auto mode, if a CKPT DUCT OVHT
message is displayed on the CAS:
A. The cockpit temperature control valve
should automatically close.
B. MANUAL TEMP should be selected
to ON.
C. Cockpit duct temperature can be mon-
itored on the EICAS/MFD ECS sys-
tem schematic.
D. All of the above.
8.
A “PACK OVHT” message on the CAS
indicates the ACM compressor discharge
temperature is high and:
A. The ACM has shut-down.
B. The ACM bypass shutoff valve will
open and the ACM should cool down.
C. EMER PRESS S/I should be selected
ON IAW the AFM procedure for
PACK OVHT.
D. Both L and R BLEED S/Is should be
selected OFF IAW the AFM proce-
dure for PACK OVHT.
11-14
FOR TRAINING PURPOSES ONLY
L E A R J E T 4 5
P I L O T T R A I N I N G M A N U A L
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