Learjet 20 Series Pilot Training Manual page 245

CABIN PRESSURE
RELIEF VALVE
CABIN AIR EXHAUST
CONTROL VALVE
FILTER
LEGEND
STATIC PRESSURE
CABIN PRESSURE
CONTROL PRESSURE
CABIN SAFETY
VALVE
Figure 12A-1.
12A-2
LEARJET 20 SERIES PILOT TRAINING MANUAL
NORMAL OUTFLOW INTO
NOSE COMPARTMENT
* CABIN
UNDER
PRESS
SWITCH
MANUAL
CABIN
PRESS
115 VAC
CABIN ALT
CONTROL
GEAR CB
UP
DOWN DOWN DOWN
AIR
GND
CABIN
AUTO
DUMP
DUMP
BELOW
8,000 FT
ABOVE
10,000 FT
DUMP INTO
TAILCONE
Pressurization System — SNs 23-003 through 24-139
FOR TRAINING PURPOSES ONLY
NORMAL
STATIC SOURCE
ALTERNATE
STATIC SOURCE
UP DN
ALT ALT
CABIN
ALTITUDE
EMERGENCY
CONTROL
VALVE
CABIN
PRESS
SWITCH
AUTO
CABIN
DUMP
28 VDC
GEAR CONTROL
SWITCH
LH MAIN GEAR
SQUAT SWITCH
SAFETY SWITCH
CABIN
SAFETY
VALVE
ANEROID
SWITCH
*SNs 23-003 THROUGH 24-138 MODIFIED BY SK 294
NORMAL
STATIC SOURCE
FlightSafety
international
SNs 24-100 THROUGH 24-103
LH MAIN GEAR
SQUAT SWITCH
AIRBORNE
GND
AUTO
SAFETY
SWITCH
DUMP
BELOW
CABIN
8,000 FT
SAFETY
VALVE
ANEROID
ABOVE ABOVE ABOVE
SWITCH
10,000 FT 10,000 FT
10,000 FT