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March 2015AEE – Automatic Emergency Descent
Automatic Emergency DescentPresented by Florent Lanterna
Airbus – EYCC
Background: Emergency Descent Procedure
March 2015AEE – Automatic Emergency Descent
© AIRBUS S.A.S. All rights reserved. Confidential and proprietary document.
Automatic Emergency Descent Objectives
Background:- 7 Memory Items to be done within short time and 7 Actions to initiatethe descent: Possible way to reduce pilot workload.- Reaction time is a key element to save all passengers, the crew and theA/C if a depressurization occurs.
Objective 1: To assist Emergency Descent Procedure� To ease procedure execution.
March 2015AEE – Automatic Emergency Descent
© AIRBUS S.A.S. All rights reserved. Confidential and proprietary document.
Objective 2: To provide a “Last Safety Net”� To cover depressurization without crew reaction (TUC* in cruise = 9 to 15s);
Based on automatic Arming and Engagement.
� To ease procedure execution.� To cover most common scenarios of emergency descent with crew in the loop.
Based on a sequence of 2 Actions.
*TUC = Time of Useful Consciousness
AED maneuvers
�Vertical maneuver• A descent at VMO/MMO – 5kts
to the maximum between 40NM MORA or 10,000ft
Max(10.000ft,40NM MORA)
March 2015AEE – Automatic Emergency Descent
© AIRBUS S.A.S. All rights reserved. Confidential and proprietary document.
=2.75N
M
�Lateral maneuver• A right lateral offset of
2.75NM to get free of traffic (except if initially in HDG mode)
Max(10.000ft,40NM MORA)
No Autopilot control laws impact
EMER DESTHR IDLE HDG
AED objective 1: to assist emergency descent procedure
���� Pilot manually arm and engage the function• 2 Memory Items to initiate the descent;• Previous procedure execution still possible.
EVENT REQUIRING EMER DES
1-PushEMER DESCENT
EMER DESCENT
March 2015AEE – Automatic Emergency Descent
© AIRBUS S.A.S. All rights reserved. Confidential and proprietary document.
EMER DESTHR IDLE HDG
ALT
XPDRSQUAWK
7700
MISC EMER DESCENT
� ACTIVATE
� CREW OXY MASKS............................USE
SIGNS …....................................ON
? TYPE OF EMER DESCENT ?
CAB PRESS EXCESS CAB ALT
� CREW OXY MASKS...........................USE
� DESCENT.............................INITIATE
� MAX FL: 100 / MEA
WHEN DESCENT ESTABLISHED
ALT CRZSPEED NAV
���� Automatic autopilot sequence without pilot action• Compatible with crew interactions at any moment
CAB ALT ≥ 14.000 FT
AED objective 2: to provide a “last safety net”
Phase 1 Phase 2
March 2015AEE – Automatic Emergency Descent
© AIRBUS S.A.S. All rights reserved. Confidential and proprietary document.
ALT CRZSPEED NAVEMER DES
CAB PRESS EXCESS CAB ALT
� CREW OXY MASKS...........................USE
� DESCENT.............................INITIATE
� MAX FL: 100 / MEA
WHEN DESCENT ESTABLISHED
EMER DESTHR IDLE HDG
ALTCountdown3...2...1...
XPDRSQUAWK
7700
CAB PRESS EXCESS CAB ALT
� CREW OXY MASKS...........................USE
� DESCENT.............................INITIATE
� MAX FL: 100 / MEA
WHEN DESCENT ESTABLISHED
���� Automatic autopilot sequence with pilot action• Compatible with crew interactions at any moment
CAB ALT ≥ 14.000 FT
AED objective 2: to provide a “last safety net”
Phase 1 Phase 2
EMER DESCENT
March 2015AEE – Automatic Emergency Descent
© AIRBUS S.A.S. All rights reserved. Confidential and proprietary document.
ALT CRZSPEED NAVEMER DES
CAB PRESS EXCESS CAB ALT
� CREW OXY MASKS...........................USE
� DESCENT.............................INITIATE
� MAX FL: 100 / MEA
WHEN DESCENT ESTABLISHED
EMER DESTHR IDLE HDG
ALT
XPDRSQUAWK
7700
CAB PRESS EXCESS CAB ALT
� CREW OXY MASKS...........................USE
� DESCENT.............................INITIATE
� MAX FL: 100 / MEA
WHEN DESCENT ESTABLISHED
Countdown14...13...12...
HMI / mechanization
• FMA
EMER DESCENT
EMER DESCENT
EMER DESCENT
EMER DESCENT
EMER DESCENT
ON steadyON flashing OFF
March 2015AEE – Automatic Emergency Descent
© AIRBUS S.A.S. All rights reserved. Confidential and proprietary document.
• FCU• AP/FD/ATHR auto-engagement• Speed: VMO/MMO - 5kt• HDG target update: right side step• ALT target update: max (MORA; 10,000ft)
• PFD/HUD messages• EMER DESCENT ARMED
AUTO EMER DES IN 15 S
AUTO EMER DES ENGAGED
AUTO EMER DES COMPLETED
Last safety net sequence
[3] A corrective RA is triggered: TCAS mode engages, EMER DES disengages
AED and AP/FD TCAS
[1] AED engagement
TRAFFIC, TRAFFIC!
ADJUST V/S, ADJUST!CLEAR OF CONFLICT!
[2] A TA is triggered: TCAS mode arms
March 2015AEE – Automatic Emergency Descent
© AIRBUS S.A.S. All rights reserved. Confidential and proprietary document.
MORA
[4] Once “Clear of Conflict” audio sounds, TCAS mode disengages and a reversion in V/S mode occurs. ALT mode is armed and the aircraft is guided towards the AFS-CP selected altitude
[5] At any moment, flight crew may manually (re-)arm and then (re-)engage AED (pushbutton + speed brakes).If last safety net countdown criteria are still verified, it triggers and leads to AED automatic engagement after 15 seconds.
© Airbus S.A.S. All rights reserved. Confidential and proprietary document. This document and all information contained herein is the sole property of AIRBUS. No intellectual property rights are granted by the delivery of this document or the disclosure ofits content. This document shall not be reproduced or disclosed to a third party without the express written consent of AIRBUS S.A.S. This document and its content shall not be used for any purpose other than that for which it is supplied. The statementsmade herein do not constitute an offer. They are based on the mentioned assumptions and are expressed in good faith. Where the supporting grounds for these statements are not shown, AIRBUS S.A.S. will be pleased to explain the basis thereof.AIRBUS, its logo, A300, A310, A318, A319, A320, A321, A330, A340, A350, A380, A400M are registered trademarks.
March 2015AEE – Automatic Emergency Descent
AED is a new feature…
© AIRBUS S.A.S. All rights reserved. Confidential and proprietary document.
…available soon on A350 XWB family!