Emergency Descent
3-8-04
Emergency Descent
and
Cabin Altitude
are indicated on the CAS window and
EDM
is displayed on the PFD.
If above FL200 (EDM armed) and if autopilot is engaged, the Emergency Descent Mode
(EDM) will be triggered by a Cabin Altitude warning. Autopilot will command the aircraft
to turn 90° to the left, descend at V
MO
/ M
MO
to FL150, level off and maintain 160 KIAS.
Descent will be initiated using FLC and HDG Hold Mode. If autothrottle is installed it will
automatically move the PCL back to IDLE. If autothrottle is not installed the PCL will
remain in the position last selected by the pilot, the descent will be slower and the speed
target of 160 KIAS after level off will not be maintained.
If
Cabin Altitude
displayed:
1.
Aircraft.........................................
Carry out
procedure
To cancel EDM for manually flown descent or if
Cabin Altitude
is NOT displayed and
cabin altitude/pressure is within normal limits:
2.
Autopilot and autothrottle............
DISCONNECT (use AP Quick Disconnect
button and AT button on FGP)
Note
EDM can only be cancelled by pressing and holding the AP Quick Disconnect
button or the TCS switch for 1 second. To cancel autothrottle during EDM the AT
button on the FGP must be used.
CAUTION
While
EDM
is active, only the disengage selections for AP, YD and AT are
available on the FGP.
---------- END -----------
Section 3 - Emergency Procedures (EASA Approved)
Emergency Descent
Pilot's Operating Handbook
Report No: 02406
Issue date: Mar 06, 2020
Page 3-8-6
12-C-A15-40-0308-00A-141U-A
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