- Task sharing is standard according to the Airbus QRH. The Commander should
- consider taking control if not already PF.
- Note: Initial Actions Must Be Done From Memory!
- 1. Both Pilots:
- Put on Oxygen masks and Establish Communications.
PF carries out initiation of emergency descent using first loop, (see diagram).
- PF and PNF task sharing according to QRH. The Commander may assume
- the PF role if appropriate.
- Use Autopilot/Auto Thrust if available.
- Alt Selector Knob: Turn left and Pull.
- (Selects lower altitude and puts aircraft into open descent.)
- Hdg Selector Knob: Turn left and Pull
- (in European airspace it may be better to return to original track.) (Initiates turn away from airway centreline and possibly other traffic and ensures positive G-loading during entry into descent.)
- Spd/Mach Selector: Pull.
- (Opens speed/mach window to allow selected speed.)
- Mach/Spd Changeover button: Push if necessary to select speed.
- (Holds current airspeed. Mach would increase airspeed during descent and at this stage structural integrity may be in doubt.)
- FMAs: Check, ensure THR IDLE/OPEN DES/HDG.
- (Confirms all the above actions have actually taken place.)
PNF simultaneously as the PF is completing their first loop carries out first loop
- Speed Brakes: Slowly extend
- (if no structural damage).
- (This prevents VLS from increasing too quickly causing Alpha protection activation with associated autopilot disconnection and auto speed brake retraction.)
Seatbelt Signs: On.
Engine Mode Selector: Ignition.
- Transponder: Set Code 7700.
- (This removes filters on ATC screens to allow aircraft to be seen by all sectors especially below aircraft.)
Radio: Mayday, Mayday, Mayday, XXX Control, EZY xxxx Pressurisation problem, Emergency Descent, STANDBY.
- Pax Oxygen Mask Switch: On (if cabin altitude is going to exceed 14000 ft).
- (This ensures cabin emergency oxygen masks are deployed in case auto deployment fails.)
- Once both “First Loops” are completed
- PF completes second loop to fine
- tune selections with PNF monitoring and confirming the FMA
- Refine Altitude: 10,000 ft or MSA if Higher.
- (Good situational awareness is required especially in the areas of high terrain, the use of the terrain display on the ND is highly recommended.)
Refine Heading: Alter as required to avoid high terrain, other aircraft or if possible to comply with ATC requests.
- Review Speed: If NO structural damage, consider increasing speed as appropriate, use of the Expedite Switch is permitted with Autopilot.
- If in any doubt maintain initial decent speed. Caution: with structural damage use of the speedbrake or gear may cause additional airframe loading.
- (Increasing speed during decent will greatly reduce time required to descend to a safer altitude, and gives approx 6000'/min ROD.)
PF calls “MY RADIOS, EMERGENCY DESCENT CHECKLIST”
PNF completes this checklist and then the crew action any ECAM as appropriate.
- Note: If only one pilot is in the cockpit when the Emergency Descent becomes necessary, the other pilot should not try to return to the cockpit until the descent manoeuvre is completed. The remaining pilot must therefore perform both sets of drills by inserting the relevant PNF actions into the PF’s “Loop Scan” at an appropriate place, i.e. Speed brake, Engine mode selector, Transponder, Mayday, Passenger Oxygen Switch...PF’s Second Loop.
- BOTH PILOTS MUST KNOW BOTH SETS OF DRILLS...
- At Level off Altitude:
- At a safe altitude for the crew to breathe without the use of Oxygen:
When the Senior Cabin Crew Member is in the cockpit:
- Remove Oxygen masks.
- Deactivate mask microphone by closing left door of Oxygen mask stowage and resetting the slide controller.PA “Senior Cabin Crew Member to the Flight Deck.”
- (This is the signal for the cabin crew that it is now safe to move throughout the cabin.)
- Ask for information about damage, and pax/crew injuries in cabin.
- The Cabin Crew are a valuable resource and may provide information which enhances situational awareness.