Page 11
Section - 3
EMERGENCY PROCEDURES
FAA Approved
Original Issue: Feb 28, 2006
Hawker 850XP Pro Line 21 Airplane Flight Manual
AIR CONDITIONING & PRESSURIZATION
DEPRESSURIZATION
NOTE: Headsets and hats must be removed before donning oxygen mask.
If Cabin Depressurization Has Occurred
MAIN AIR VLVs 1 & 2 ..................................................CLOSE
F/DK VLV .....................................................................OPEN fully
Cabin notices ...............................................................ON
Cabin altitude ...............................................................Check
If above 15,000 ft, complete EMERGENCY DESCENT procedure - this section.
If above 12,500 ft, confirm passenger oxygen masks have dropped.
If masks have not dropped, pull the PASSENGER SUPPLY EMERGENCY control knob.
WARNING: THE HIGHEST RECOMMENDED CABIN ALTITUDE FOR SUSTAINED FLIGHT
IS 25,000 FT.
DUMP VALVE...............................................................Check SHUT
MANUAL CABIN ALTITUDE CONTROL......................Check full DECREASE
NOTES:
1. With the Flight Deck Valve open and No. 2 engine at high power, a cabin altitude
of approximately 9000 ft can be maintained at 40,000 ft, assuming no abnormal
leaks.
2. The flight compartment will become very hot. Bleed air temperature can be
controlled by modulating right engine power.
Subsequent Action
When the airplane is below 15,000 ft
F/DK VLV ....................................................................CLOSE
DUMP VALVE .............................................................As required for ventilation
Horn sounds and
CABIN
ALTITUDE
Crew oxygen ....................................................... Don masks
Mic selector ......................................................... OXY- MIC
Continued Next Page
For Training Purposes Only