EMER DESCENT Flashcards
CALL OUT
“EMERGENCY DESCENT”
PROCEDURE:The flight crew can display this procedure by first pressing the ECP ABN PROC pb, then by selecting the EMER DESCENT procedure.
The flight crew should initiate an emergency descent only if they confirmed that cabin altitude and rate
of climb are excessive and not controllable.
The flight crew should perform the actions of the EMER DESCENT in two steps:
- First step: Apply the memory items
- Second step: Perform the read and-do procedure (ECAM or EMER DESCENT Abnormal
not-sensed procedure).
CREW OXY MASKS ……………………………………………………………………………………………………… USE
SIGNS …………………………………………………………………………………………………………………………… ON
EMER DESCENT…………………………………………………………………………………………………….INITIATE
● If A/THR is not active:
ALL THR LEVERS …………………………………………………………………………………………………….IDLE
SPEED BRAKE LEVER …………………………………………………………………………………………………FULL
SPEED : MAX / APPROPRIATE
CAUTION Descend at the maximum appropriate speed.
If structural damage is suspected, use the flight controls with care and limit speed as
appropriate.
The flight crew can extend the landing gear when the speed is below VLO.
ATC …………………………………………………………………………………………………………………………NOTIFY
Notify the ATC of the nature of the emergency and state intention.
EMER DESCENT (PA)……………………………………………………………………………………….. ANNOUNCE
The flight crew must inform the cabin of emergency descent on the PA system.
ATC SQUAWK 7700 …………………………………………………………………………………………….CONSIDER
Squawk 7700 unless otherwise specified by ATC.
MAX FL : 100/MEA-MORA
● IF CAB ALT ABOVE 14000 FT :
PAX OXY MASKS MAN ON ……………………………………………………………………………………PRESS
If the cabin altitude is above 13 800 ft, the passenger oxygen masks will automatically drop.
If the automatic drop did not operate, pressing the PAX OXY MASK MAN ON pb will release the
passenger masks. In addition, contact the cabin crew to confirm that passenger masks are
released.
Notify the cabin crew when the aircraft reaches a safe flight level, and when the use of oxygen
masks is no more necessary.
● WHEN DESCENT ESTABLISHED :
CREW OXY MASKS DILUTION ……………………………………………………………………………………… N
To save oxygen, set the N/100% selector to N.
With the N/100% selector set to 100 %, oxygen quantity may be insufficient to cover the entire emergency descent profile.
Ensure that crew communication is established with oxygen masks. Avoid the continuous use of
the interphone to minimize interference with the breathing noise in the oxygen mask. DEACTIVATE
LIMITATIONS
LIMITATIONS ON ECAM
ALL PHASES
MAX FL : 100/MEA-MORA
LIMITATIONS ON PFD
ALL PHASES
MAX FL : 100/MEA-MORA
During the first step,
Note: When in IDLE thrust, high speed and with speed brake extended, the rate of descent is
approximately 6 000 ft/min . To descend from cruise altitude to FL 100, it takes approximately
5 min and 40 NM.
the PM should focus on monitoring the FMA to ensure that the PF has correctly established the aircraft in descent.
To initiate the emergency descent, the use of AP, and A/THR is highly recommended.
The flight crew should be aware that the safety altitude displayed on the ND is the highest grid MORA
value within a circle of 40 NM radius around the aircraft while the safety altitude displayed on the VD is
the MEA/MORA, or MSA, along the aircraft trajectory and in the VD range.
The flight crew should suspect structural damage in case of a loud bang, or high cabin vertical speed.
If the flight crew suspects structural damage, apply both of the following:
- Set the SPEED/MACH pb to SPEED, to prevent an increase in the IAS, or to reduce the speed.
This action minimizes the stress on aircraft structure
- Carefully use the speed brakes, to avoid additional stress on aircraft structure.
PF ACTIONS: 1. CREW O2 MASKS-USE..COMM. ESTABLISH
2.EMR DESCENT -INITIATE..ALT(TURN/PULL)-HDG (TURN/PULL)- SPD (PULL) 3.FMA-ANNOUNCE 4.if A/THR is not active THR LVRS-IDLE 5 SPD BRK-PULL
PM ACTIONS:1 CREW O2 MASKS-USE..COMM. ESTABLISH 2.SIGNS-ON 3 FMA-CHECK.
During the second step, the PF should refine the settings.
Only if the cabin altitude goes above 14 000 ft, the flight crew must press the MASK MAN ON pb.
When it is obvious that the cabin altitude will exceed 14 000 ft, the flight crew could press the MASK
MAN ON pb, before the cabin altitude reaches 14 000 ft.
The TCAS mode selector must remain on the TA/RA position. Avoidance of collision has the priority,
even if it requires one temporary interruption of the descent maneuver. The TA/RA TCAS mode
enables a maximum protection against collision
Finally, subsequent to an emergency descent,
once the oxygen masks are removed, the flight crew
should perform all of the following:
- Close the oxygen stowage box
- Press the PRESS TO RESET oxygen control slide, to deactivate the mask microphone and to cut
off the oxygen.
Below FL 100, the flight crew should limit the rate of descent to approximately 1 000 ft/min except
during the approach phase.
