3-17
Cabin Environment Failures
Cabin Pressure
3-17-01
Cabin pressure differential of less than -0.25 psi or greater than 6.35 psi is exceeded.
1.
Systems MFD ENVIRONMENT
window........................................
Check ∆P psi indication
If ∆P less than -0.25 psi:
2.
Aircraft.........................................
Reduce descent rate
3.
CABIN PRESSURE switch.........
DUMP
If ∆P more than 6.35 psi:
4.
CABIN PRESSURE switch.........
DUMP
5.
ACS EMERG shut off..................
PULL
6.
Main OXYGEN lever...................
Confirm ON
7.
Crew oxygen masks....................
ON
Note
Procedure to don the crew oxygen masks:
1
Remove the normal headset.
2
Put the oxygen mask on. Check 100%.
3
Put the normal headset back on.
4
Set MIC SELECT switch on the rear left panel to MASK.
8.
PASSENGER OXYGEN selector
AUTO or ON
9.
Systems MFD PAX OXY
advisory.......................................
Confirm ON
10.
Passengers.................................
Instruct to don masks
11.
Aircraft.........................................
procedure
---------- END -----------
Cabin Pressure
3-17-02
Cabin pressure differential is greater than 6.0 psi.
1.
CPCS SYSTEM MODE switch....
MANUAL
2.
MANUAL CONTROL switch........
Push intermittently to CLIMB to reduce
pressure differential to below 5.75 psi
Continued on next page
Section 3 - Emergency Procedures (EASA Approved)
Cabin Environment Failures
Pilot's Operating Handbook
Report No: 02406
Issue date: Dec 18, 2020
Page 3-17-1
12-C-A15-40-0317-00A-141A-A
FOR
GENERAL
AND
FAMILIARIZATION
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