12-12
FOR TRAINING PURPOSES ONLY
LEARJET 20 SERIES PILOT TRAINING MANUAL
FlightSafety
international
CABIN ALTITUDE
8,750 ±250 feet
11,500 ±1,500 feet
14,000 ±750 feet
PROTECTION AND WARNING
• Pressurization aneroid automatically switches to manual control.
• CABIN ALT caution light illuminates.
9,500 ±250 feet • Emergency pressurization valves are activated by aneroid switches, directing
engine bleed air directly into the cabin.
• Cabin altitude limiters actuate.
10,100 ±250 feet • Cabin altitude warning horn sounds—initiate emergency descent.
• Passenger oxygen masks are deployed. (See Chapter 17.)
• Cabin overhead lights illuminate.*
*24-255 and subsequent, 25-090, -094 and subsequent, and earlier airplanes modified by AAK 73-6.
Table 12-2. AUTOMATIC PROTECTION AND WARNING FEATURES
—
SNs 24-350 AND
SUBSEQUENT, AND 25-227 AND SUBSEQUENT
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