Pilot’s Operating Handbook Section 3
EXTRA 500 Emergency Procedures
26. January 2011
3-67
3.5.o Pressurization System Malfunctions
1 CABIN PRESSURE r
This warning means that the cabin altitude is above 10,000ft or
the cabin pressure relative to the outside atmosphere is above
the normal operating limit (5.5psid).
Cabin Altitude; Check indication
Cabin Differential Pressure; Check indication
If cabin overpressure has been determined:
ENV AIR; OFF
Emergency Descent; Perform to safe altitude
(< 10,000 ft)
If cabin altitude above 10,000 ft has been determined:
ENV AIR; Check ON
PRESS; Check ON
Cabin Pressure Controller; Check
Rate Control Knob; Turn clockwise to regain pressurization
If cabin altitude drops below 10,000 ft:
Flight; Continue
Cabin Pressurization Instruments; Monitor
If cabin altitude remains still above 10,000 ft:
Emergency Descent; Perform to safe altitude
(< 10,000 ft)
2 AFT DOOR r
This warning means the cabin door is not correctly closed.
CABIN PRESSURE; Check illuminated
If CABIN PRESSURE illuminated
Emergency Descent; Perform to safe altitude
(< 10,000 ft)
If in safe altitude:
Occupants seated and
seat belts on ; Check
Cabin pressurization; Reduce if possible
Note
As pilot in command do not leave your seat.
Let a passenger check the door.
Door; Check closed
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