W DOC AIRBUS | MMEL OPS PROC

ELAC 1

27-93-01AELAC 1
Applicable to: -
- Flight preparation/limitations
For aircraft with the RNP AR capability, RNP AR operations are not permitted.
If the AP 1 is engaged for landing:
Maximum landing capability is CAT 1.
If the AP 2 is engaged for landing:
Maximum landing capability is CAT 3 SINGLE.
- During cockpit preparation
NOTE:
If the Yellow Electric Pump is not available:
  • Pressurize the Yellow Hydraulic System with:
    • A Ground cart, or with
    • Both Yellow and Green Engines Hydraulic Pumps with both Engines running.
  • Replace any action on the YELLOW ELEC PUMP pb-sw by a similar action on the Ground Cart or on both GREEN ENG 1 PUMP pb-sw and YELLOW ENG 2 PUMP pb-sw in the following procedure.
If the F/CTL ELAC 1 FAULT alert is displayed on the EWD:
Note:
  1. After application of the maintenance procedure, the following ECAM alerts remain displayed on the EWD :
    • C/B TRIPPED R ELEC BAY alert , and
    • C/B TRIPPED ON OVHD PNL alert, and
    • F/CTL ELAC 1 FAULT alert.
  2. After first engine start, the F/CTL ALTN LAW alert may be spuriously displayed. It normally disappears after second engine start.
Check of the elevator and the roll spoilers control through the SECs:
Put the aircraft in the test configuration:
  • YELLOW ELEC PUMP pb-swON
NOTE:
If the Yellow Electric Pump is not available, pressurize the Yellow Hydraulic System with a Ground Cart or with both Green and Yellow Engines Hydraulic Pumps with both Engines running.
  • PTU pb-swAUTO
  • BLUE ELEC PUMP pb-swAUTO
  • BLUE PUMP OVRD pbON
  • ELAC 2 pb-swOn
  • SEC 1 pb-swOn
  • SEC 2 pb-swOn
  • SEC 3 pb-swOn
Wait 5 s
Check of the elevator control through the SEC 1 and the spoilers control through the SEC 1 and the SEC 3:
  • BLUE PUMP OVRD pb-swOff
Wait for hydraulic circuit depressurization.
On the F/CTL SD Page, check that blue elevator actuator symbol becomes amber.
Wait 5 s
  • BLUE PUMP OVRD pb-swON
  • ELAC 2 pb-swOFF
  • SEC 2 pb-swOFF
Move the CAPT stick from right stop to left stop, then from forward stop to aft stop.
On the F/CTL SD Page, check the correct movement of the pairs of spoilers 2, 3, and 4 and the full travel of both elevators.
Move the F/O stick from right stop to left stop, then from forward stop to aft stop.
On the F/CTL SD Page, check the correct movement of the pairs of spoilers 2, 3, and 4 and the full travel of both elevators.
CAUTION:
If an expected spoiler or elevator movement does not occur, do not attempt any reset.
Contact the maintenance.
Check of the elevator control through the SEC 2 and of the spoilers control through the SEC 2 and the SEC 3:
  • ELAC 2 pb-swOn
  • SEC 2 pb-swOn
Wait 5 s
  • YELLOW ELEC PUMP pb-swOff
Wait for hydraulic circuits depressurization.
On the F/CTL SD Page, check that the yellow and the green elevator actuators symbols become amber.
Wait 5 s
  • YELLOW ELEC PUMP pb-swON
  • ELAC 2 pb-swOFF
  • SEC 1 pb-swOFF
Move the CAPT stick from right stop to left stop, then from forward stop to aft stop.
On the F/CTL SD Page, check the correct movement of the pairs of spoilers 2 and 5 and the full travel of both elevators.
Move the F/O stick from right stop to left stop, then from forward stop to aft stop.
On the F/CTL SD Page, check the correct movement of the pairs of spoilers 2 and 5 and the full travel of both elevators.
CAUTION:
If an expected spoiler or elevator movement does not occur, do not attempt any reset.
Contact the maintenance.
Return to normal configuration:
  • YELLOW ELEC PUMP pb-swOff
  • BLUE PUMP OVRD pb-swOff
  • ELAC 1 pb-swOFF
  • ELAC 2 pb-swOn
  • SEC 1 pb-swOn
Check that the DC TIE contactor 1 is closed:
Supply the electrical network from the APU or the external power.
On the ELEC SD Page, check the link between the DC BUS 1 and the DC BAT BUS.
If the F/CTL ELAC 1 PITCH FAULT alert is displayed on the EWD:
Note:
After first engine start, the F/CTL ALTN LAW alert may be spuriously displayed on the EWD. It normally disappears after second engine start.
Check of the elevator and the roll spoilers control through the SECs:
Put the aircraft in the test configuration:
  • YELLOW ELEC PUMP pb-swON
  • PTU pb-swAUTO
  • BLUE ELEC PUMP pb-swAUTO
  • BLUE PUMP OVRD pbON
  • ELAC 1 pb-swOn
  • ELAC 2 pb-swOn
  • SEC 1 pb-swOn
  • SEC 2 pb-swOn
  • SEC 3 pb-swOn
Wait 5 s
Check of the elevator control through the SEC 1 and of the spoilers control through the SEC 1 and the SEC 3:
  • BLUE PUMP OVRD pb-swOff
Wait for hydraulic circuit depressurization.
On the F/CTL SD Page, check that blue elevator actuator symbol becomes amber.
Wait 5 s
  • BLUE PUMP OVRD pb-swON
  • ELAC 1 pb-swOFF
  • ELAC 2 pb-swOFF
  • SEC 2 pb-swOFF
Move the CAPT stick from right stop to left stop, then from forward stop to aft stop.
On the F/CTL SD Page, check the correct movement of the pairs of spoilers 2, 3, and 4 and the full travel of both elevators.
Move the F/O stick from right stop to left stop, then from forward stop to aft stop.
On the F/CTL SD Page, check the correct movement of the pairs of spoilers 2, 3, and 4 and the full travel of both elevators.
CAUTION:
If an expected spoiler or elevator movement does not occur, do not attempt any reset.
Contact the maintenance.
Check of the elevator control through the SEC 2 and of the spoilers control through the SEC 2 and the SEC 3:
  • ELAC 1 pb-swOn
  • ELAC 2 pb-swOn
  • SEC 2 pb-swOn
Wait 5 s
  • YELLOW ELEC PUMP pb-swOff
Wait for hydraulic circuits depressurization.
On the F/CTL SD Page, check that the yellow and the green elevator actuators symbols become amber.
Wait 5 s
  • YELLOW ELEC PUMP pb-swON
  • ELAC 1 pb-swOFF
  • ELAC 2 pb-swOFF
  • SEC 1 pb-swOFF
Move the CAPT stick from right stop to left stop, then from forward stop to aft stop.
On the F/CTL SD Page, check the correct movement of the pairs of spoilers 2 and 5 and the full travel of both elevators.
Move the F/O stick from right stop to left stop, then from forward stop to aft stop.
On the F/CTL SD Page, check the correct movement of the pairs of spoilers 2 and 5 and the full travel of both elevators.
CAUTION:
If an expected spoiler or elevator movement does not occur, do not attempt any reset.
Contact the maintenance.
Return to normal configuration:
  • YELLOW ELEC PUMP pb-swOff
  • BLUE PUMP OVRD pb-swOff
  • ELAC 1 pb-swOn
  • ELAC 2 pb-swOn
  • SEC 1 pb-swOn
Check that the DC TIE contactor 1 is closed:
Supply the electrical network from the APU or the external power.
On the ELEC SD Page, check the link between the DC BUS 1 and the DC BAT BUS.
- Approach
If the AP 1 is used for the approach:
The captain must be the PF.
Note:
Due to the fact that the ELAC 1 is not electrically supplied, the F/O take-over pb cannot disengage the AP 1.
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