Learjet 20 Series Pilot Training Manual page 241

1. To regulate cabin pressure, the CABIN
CONTROLLER modulates the:
A. Cabin safety valve
B. Flow control valve
C. Outflow valve
D. Primary differential pressure-relief
valve
2. If installed, illumination of the CAB
ALT light indicates:
A. Cabin altitude is at or above 8,750
±250 feet and the pressurization
control system is in manual mode.
B. Cabin altitude is at or above 8,750
±250 feet and the pressurization
control system is in either auto-
matic or manual mode.
C. Cabin altitude is at or above 8,750
±250 feet and the emergency pres-
surization mode is activated.
D. The CAB AIR switch is in the OFF
position.
3. In the event of airplane electrical failure:
A. Cabin pressurization must be con-
trolled manually with UP–DN knob.
B. Cabin pressurization is controlled
in the automatic mode only.
C. The emergency pressurization
valves (if installed) automatically
actuate to provide cabin pressure.
D. Both B and C
4. The cabin altitude warning horn sounds
when the cabin altitude reaches:
A. 8,750 ±250 feet
B. 9,500 ±250 feet
C. 10,100 ±250 feet
D. 11,500 ±1,500 feet
LEARJET 20 SERIES PILOT TRAINING MANUAL
QUESTIONS
FOR TRAINING PURPOSES ONLY
5. To dump residual cabin pressure on
touchdown:
A. The outflow valve opens automati-
cally.
B. The cabin safety valve opens auto-
matically.
C. The flow control valve closes auto-
matically.
D. The bleed-air shutoff valves close
automatically.
6. On airplanes without the emergency
pressurization valves, if DC power fails:
A. The windshield anti-ice/defog system
can be used if pressurization fails.
B. There is no emergency pressuriza-
tion capability.
C. The flow control valve fails closed.
D. The bleed-air shutoff and regulator
valves fail closed.
7. On your airplane, if DC power fails:
A. Pressurization control reverts to
manual control.
B. Pressurization control reverts to
automatic control.
C. Cabin pressure is not controlled.
D. The cabin slowly depressurizes.
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