W DOC AIRBUS | AMM A320F

Inertial Reference (IR) Alignment-Procedure to do a Check of the Links between each Flight Management and Guidance Computer (FMGC) and the three Air Data/Inertial Reference Units (ADIRUs)


TASK 34-10-00-860-004-A-02
Inertial Reference (IR) Alignment-Procedure to do a Check of the Links between each Flight Management and Guidance Computer (FMGC) and the three Air Data/Inertial Reference Units (ADIRUs)


NOTE: The time necessary to do the IR alignment is:
  • 15 minutes if the latitude is more than 73°S
  • 10 minutes if the latitude is between 73°S and 73°N
  • 15 minutes if the latitude is more than 73°N.
ZONE: 210
1. Reason for the Job
Self explanatory
2. Job Set-up Information
 A. Fixtures, Tools, Test and Support Equipment
REFERENCE
QTY
DESIGNATION
No specific
AR
ACCESS PLATFORM 1M(3 FT)
 B. Work Zones and Access Panels
ZONE/ACCESS
ZONE DESCRIPTION
210
CKPT,FWD COMPT BHD TO FLT COMPT BULKHEAD
822
 C. Referenced Information
REFERENCE
DESIGNATION
TASK 24-41-00-861-002-A
Energize the Aircraft Electrical Circuits from the External Power
TASK 24-41-00-861-002-A-01
Energize the Aircraft Electrical Circuits from the APU
TASK 24-41-00-861-002-A-02
Energize the Aircraft Electrical Circuits from Engine 1(2)
TASK 24-41-00-862-002-A
De-energize the Aircraft Electrical Circuits Supplied from the External Power
TASK 24-41-00-862-002-A-01
De-energize the Aircraft Electrical Circuits Supplied from the APU
TASK 24-41-00-862-002-A-02
De-energize the Aircraft Electrical Circuits Supplied from the Engine 1(2)
TASK 31-60-00-860-001-A
EIS Start Procedure
TASK 31-60-00-860-002-A
EIS Stop Procedure
3. Job Set-up
Subtask 34-10-00-860-083-A ** ON A/C NOT FOR ALL
A. Aircraft Maintenance Configuration
   (1) Energize the aircraft electrical circuits (Ref. AMM TASK 24-41-00-861-002).
   (2) Do the EIS start procedure (Ref. AMM TASK 31-60-00-860-001).
   (3) On the overhead panel:
     (a) On the ADIRS CDU, make sure that the three OFF/NAV/ATT selector switches are set to OFF.
   (4) On the glareshield panel, on the CAPT and F/O EFIS control-sections of the Flight Control Unit (FCU), set the mode selector switches to ROSE/NAV.
   (5) During the alignment, set the NAV mode, and until the NAV mode is shown, make sure that the aircraft does not move.
NOTE: The time for the alignment is shown:
  • On the right side of the ADIRS CDU, if the DATA DISPLAY selector switch is set to HDG. The indication shown is TTN5.
  • On the upper ECAM DU, from 6 MN to 1 MN. The indication shown is IRS IN ALIGN 6 MN.
Subtask 34-10-00-860-083-C ** ON A/C NOT FOR ALL
A. Aircraft Maintenance Configuration
   (1) Energize the aircraft electrical circuits (Ref. AMM TASK 24-41-00-861-002).
   (2) Do the EIS start procedure (Ref. AMM TASK 31-60-00-860-001).
   (3) On the overhead panel:
     (a) On ADIRS MSU panel 41VU, make sure that the three OFF/NAV/ATT selector switches are set to OFF.
   (4) On the glareshield panel, on the CAPT and F/O EFIS control-sections of the Flight Control Unit (FCU), set the mode selector switches to ROSE/NAV.
   (5) During the alignment, set the NAV mode, and until the NAV mode is shown, make sure that the aircraft does not move.
NOTE: The time for the alignment is shown on the upper ECAM DU, from 6 MN to 1 MN. The indication shown is IRS IN ALIGN 6 MN.
Subtask 34-10-00-010-069-A
B. Get Access
   (1) Put the ACCESS PLATFORM 1M(3 FT) in position below access door 822.
   (2) Open access door 822.
   (3) On battery power center 105VU:
  • Loosen the two screws and remove the protective cover.
Subtask 34-10-00-865-093-A
C. Make sure that this(these) circuit breaker(s) is(are) closed:
PANELDESIGNATIONFINLOCATION
** ON A/C NOT FOR ALL
49VUNAV PROBES/ADIRU3/PWR/SWTG8FPF09
** ON A/C NOT FOR ALL
49VUAUTO FLT/FCU/19CA1B05
49VUAUTO FLT/FMGC/110CA1B02
49VUAUTO FLT/MCDU/111CA1B01
** ON A/C ALL
49VUL/G/LGCIU/SYS1/NORM1GAC09
49VUNAV PROBES/ADIRU 1/AND AOA 1/26VAC5FP1F07
49VUNAV PROBES/ADIRU1/115VAC4FP1F06
** ON A/C NOT FOR ALL
49VUNAV PROBES/ADIRU3/PWR/SWTG8FPF08
** ON A/C NOT FOR ALL
49VUAUTO FLT/FCU/19CA1H11
49VUAUTO FLT/FMGC/110CA1H08
49VUAUTO FLT/MCDU/111CA1H07
** ON A/C ALL
105VUADIRS/ADIRU1/28VDC6FP1C02
** ON A/C NOT FOR ALL
121VUADIRS/ADIRU/2PWR/SHED10FPN10
** ON A/C NOT FOR ALL
121VUCFDS/CFDIU/SPLY2TWJ18
121VUCFDS/CFDIU/BACK/UP8TWJ17
** ON A/C ALL
121VUAUTO FLT/FCU/29CA2M21
121VUAUTO FLT/FMGC/210CA2M17
121VUAUTO FLT/MCDU/211CA2N20
121VUADIRS/ADIRU/3PWR/SWTG9FPN09
121VUADIRS/ADIRU/2/26VAC AND AOA5FP2N08
121VUADIRS/ADIRU/3/26VAC AND AOA5FP3N07
121VUADIRS/ADIRU/2/115VAC4FP2N06
121VUADIRS/ADIRU/3/115VAC4FP3N05
121VUADIRS/ADIRU/2/28VDC6FP2N04
121VUADIRS/ADIRU/3/28VDC6FP3N03
121VUHYDRAULIC/LGCIU/SYS22GAQ35
121VUHYDRAULIC/LGCIU/SYS1/GRND SPLY52GAQ34
** ON A/C NOT FOR ALL
121VUADIRS/2PWR/SHED &/AOA2 MON10FPN10
** ON A/C NOT FOR ALL
121VUCFDS/CFDIU/SPLY2TWJ41
121VUCFDS/CFDIU/BACK/UP8TWJ40
Subtask 34-10-00-865-094-A
D. Open this(these) circuit breaker(s):
PANELDESIGNATIONFINLOCATION
** ON A/C NOT FOR ALL
121VUSATCOM240RVK01
4. Procedure
Subtask 34-10-00-860-084-C ** ON A/C NOT FOR ALL
A. IR Alignment from the Multipurpose Control and Display Unit (MCDU):
ACTION
RESULT
1.On rear circuit-breaker panel 121VU:
  • Open circuit breaker 10CA2.

2.On Air Data/Inertial Reference System (ADIRS) Mode Selector Unit (MSU) panel 41VU:
  • Set the three OFF/NAV/ATT selector switches to NAV.
On ADIRS MSU panel 41VU:
  • It is possible that the OFF legend of the ADR1, ADR2 and ADR3 pushbutton switches flashes.
  • It is possible that the ON BAT light comes on. On the upper ECAM Display Unit (DU), the memo section shows IRS IN ALIGN > 7 MN (only if FMGC1 and FMGC2 are energized).
    On the CAPT and F/O PFDs:
  • The CAS, vertical speed and altitude data come into view.
  • After approximately 40 seconds, the ATT warning flags go out of view and the attitude data come into view.
3.On MCDU1 or 2:
On MCDU1 or 2:
  • Turn the BRT knob (or push the BRT key).

  • Push the MCDU MENU mode key.
The MCDU MENU page comes into view.
  • Push the line key adjacent to the FMGC indication.

  • Push the INIT mode key.
The INIT A page comes into view.
  • Enter an airline route code with the MCDU keyboard.
The code number is shown on the scratchpad line (in the bottom part of the MCDU).
  • Push the line key adjacent to the CO RTE indication.
  • The code number comes into view below the CO RTE indication.
  • Push the line key adjacent to the IRS INIT indication.
  • The IRIS INIT page comes into view. The latitude/longitude coordinates of the FM reference airport are shown on line 1. The slew prompts (the up and down arrows) adjacent to the LAT indication are shown.
  • The GPS position is shown on line 2 (if the GPS function is available).
  • The position of each IRS is shown on lines 3 to 5.
  • The ALIGN ON REF indication is shown on the line adjacent to line key 6R.
NOTE: You can increase or decrease the latitude or/and longitude as shown in Para. 4 and 5. If no latitude or longitude change is necessary, you can go to Para. 6.
NOTE: If you enter an incorrect longitude two times in sequence during PPOS entry, the Air Data/Inertial Reference Unit (ADIRU) will accept this position until the subsequent alignment.
4.For the latitude change:

  • On the MCDU keyboard, push one of the two slew keys.
The latitude coordinates increase or decrease:
  • By one minute, each time you push the slew key
  • By one minute/second, if you push and hold the slew key.
5.For the longitude change:

  • On the MCDU, push the line key adjacent to the longitude coordinates.
The slew prompts (the up and down arrows) move to the LONG indication.
  • On the MCDU keyboard, push one of the two slew keys.
The longitude coordinates increase or decrease as the LAT indication.
6.On the MCDU, push the line key adjacent to the ALIGN ON REF indication.
On the MCDU, the amber CONFIRM ALIGN* indication is shown on the line adjacent to line key 6R.
7.On the MCDU, push the line key adjacent to the CONFIRM ALIGN* indication.
The IRS alignment process starts.
After approximately five minutes:
  • On the CAPT and F/O NDs, the HDG warning flags go out of view and the heading dial comes into view.
After approximately ten minutes:
  • On the upper ECAM DU, the IRS IN ALIGN 1 MN indication goes out of view.
8.On overhead circuit-breaker panel 49VU:
  • Open circuit breaker 10CA1.

9.On rear circuit-breaker panel 121VU:
  • Close circuit breaker 10CA2.

10.Do the same test from Para. 2.
The results are the same.
11.On overhead circuit-breaker panel 49VU:
  • Close circuit breaker 10CA1.

Subtask 34-10-00-860-084-E ** ON A/C NOT FOR ALL
A. IR Alignment from the Multipurpose Control and Display Unit (MCDU):
ACTION
RESULT
1.On rear circuit-breaker panel 121VU:
  • Open circuit breaker 10CA2.

2.On Air Data/Inertial Reference System (ADIRS) Mode Selector Unit (MSU) panel 41VU:
  • Set the three OFF/NAV/ATT selector switches to NAV.
On ADIRS MSU panel 41VU:
  • It is possible that the OFF legend of the ADR1, ADR2 and ADR3 pushbutton switches flashes.
  • It is possible that the ON BAT light comes on. On the upper ECAM Display Unit (DU), the memo section shows IRS IN ALIGN > 7 MN (only if FMGC1 and FMGC2 are energized).
    On the CAPT and F/O PFDs:
  • The CAS, vertical speed and altitude data come into view.
  • After approximately 40 seconds, the ATT warning flags go out of view and the attitude data come into view.
3.On the MCDU:
On the MCDU:
  • Turn the BRT knob.
  • Push the MCDU MENU mode key.
The MCDU MENU page comes into view.
  • Push the line key adjacent to the FMGC indication.
The aircraft status page comes into view.
  • Push the INIT mode key.
The INIT page comes into view.
  • Enter an airline route code (or a FROM/TO destination).
The code number is shown on the scratchpad line (in the bottom part of the MCDU).
  • Push the line key adjacent to the CO RTE indication (or the FROM/TO indication).
  • The code number comes into view below the CO RTE indication (or the FROM/TO indication).
  • Push the line key adjacent to the IRS INIT indication.
  • The IRS INIT page comes into view.
  • The latitude and longitude are shown below the LAT and LONG indications. The slew prompts (the up and down arrows) adjacent to the LAT indication are shown.
  • The ALIGN IRS indication is shown on the line above the longitude coordinates.
NOTE: You can increase or decrease the latitude or/and longitude as shown in Para. 4 and 5. If no latitude or longitude change is necessary, you can go to Para. 6.
NOTE: If you enter an incorrect longitude two times in sequence during PPOS entry, the Air Data/Inertial Reference Unit (ADIRU) will accept this position until the subsequent alignment.
4.For the latitude change:

  • On the MCDU keyboard, push one of the two slew keys.
The latitude coordinates increase or decrease:
  • By one minute, each time you push the slew key
  • By one minute/second, if you push and hold the slew key.
5.For the longitude change:

  • On the MCDU, push the line key adjacent to the longitude coordinates.
The slew prompts (the up and down arrows) move to the LONG indication.
  • On the MCDU keyboard, push one of the two slew keys.
The longitude coordinates increase or decrease as the LAT indication.
6.On the MCDU, push the line key adjacent to the ALIGN IRS indication.
On the MCDU, the ALIGN IRS indication goes out of view.
After approximately five minutes:
  • On the CAPT and F/O NDs, the HDG warning flags go out of view and the heading dial comes into view.
After approximately ten minutes:
  • On the upper ECAM DU, the IRS IN ALIGN 1 MN indication goes out of view.
7.On overhead circuit-breaker panel 49VU:
  • Open circuit breaker 10CA1.

8.On rear circuit-breaker panel 121VU:
  • Close circuit breaker 10CA2.

9.Do the same test from Para. 2.
The results are the same.
10.On overhead circuit-breaker panel 49VU:
  • Close circuit breaker 10CA1.

Subtask 34-10-00-860-084-F ** ON A/C NOT FOR ALL
A. IR Alignment from the Multipurpose Control and Display Unit (MCDU):
ACTION
RESULT
1.On rear circuit-breaker panel 121VU:
  • Open circuit breaker 10CA2.

2.On Air Data/Inertial Reference System (ADIRS) Mode Selector Unit (MSU) panel 41VU:
  • Set the three OFF/NAV/ATT selector switches to NAV.
On ADIRS MSU panel 41VU:
  • It is possible that the OFF legend of the ADR1, ADR2 and ADR3 pushbutton switches flashes.
  • It is possible that the ON BAT light comes on. On the upper ECAM Display Unit (DU), the memo section shows IRS IN ALIGN > 7 MN (only if FMGC1 and FMGC2 are energized).
    On the CAPT and F/O PFDs:
  • The CAS, vertical speed and altitude data come into view.
  • After approximately 40 seconds, the ATT warning flags go out of view and the attitude data come into view.
3.On the MCDU:
On the MCDU:
  • Turn the BRT knob (or push the BRT key).
  • Push the MCDU MENU mode key.
The MCDU MENU page comes into view.
  • Push the line key adjacent to the FMGC indication.
The aircraft status page comes into view.
  • Push the INIT mode key.
The INIT page comes into view.
  • Enter an airline route code (or a FROM/TO destination).
The code number is shown on the scratchpad line (in the bottom part of the MCDU).
  • Push the line key adjacent to the CO RTE indication (or the FROM/TO indication).
  • The code number comes into view below the CO RTE indication (or the FROM/TO indication).
  • Push the line key adjacent to the IRS INIT indication.
  • The IRS INIT page comes into view. The latitude/longitude coordinates of the FM reference airport are shown on line 1. The slew prompts (the up and down arrows) adjacent to the LAT indication are shown.
  • The GPS position is shown on line 2 (if the GPS function is available).
  • The position of each IRS is shown on lines 3 to 5.
  • The ALIGN ON REF indication is shown on the line adjacent to line key 6R.
NOTE: You can increase or decrease the latitude or/and longitude as shown in Para. 4 and 5. If no latitude or longitude change is necessary, you can go to Para. 6.
NOTE: If you enter an incorrect longitude two times in sequence during PPOS entry, the Air Data/Inertial Reference Unit (ADIRU) will accept this position until the subsequent alignment.
4.For the latitude change:

  • On the MCDU keyboard, push one of the two slew keys.
The latitude coordinates increase or decrease:
  • By one minute, each time you push the slew key
  • By one minute/second, if you push and hold the slew key.
5.For the longitude change:

  • On the MCDU, push the line key adjacent to the longitude coordinates.
The slew prompts (the up and down arrows) move to the LONG indication.
  • On the MCDU keyboard, push one of the two slew keys.
The longitude coordinates increase or decrease as the LAT indication.
6.On the MCDU, push the line key adjacent to the ALIGN ON REF indication.
On the MCDU, the amber CONFIRM ALIGN* indication is shown on the line adjacent to line key 6R.
7.On the MCDU, push the line key adjacent to the CONFIRM ALIGN* indication.
The IRS alignment process starts.
After approximately five minutes:
  • On the CAPT and F/O NDs, the HDG warning flags go out of view and the heading dial comes into view.
After approximately ten minutes:
  • On the upper ECAM DU, the IRS IN ALIGN 1 MN indication goes out of view.
8.On overhead circuit-breaker panel 49VU:
  • Open circuit breaker 10CA1.

9.On rear circuit-breaker panel 121VU:
  • Close circuit breaker 10CA2.

10.Do the same test from Para. 2.
The results are the same.
11.On overhead circuit-breaker panel 49VU:
  • Close circuit breaker 10CA1.

Subtask 34-10-00-860-084-H ** ON A/C NOT FOR ALL
A. IR Alignment from the Multipurpose Control and Display Unit (MCDU):
ACTION
RESULT
1.On rear circuit-breaker panel 121VU:
  • Open circuit breaker 10CA2.

2.On Air Data/Inertial Reference System (ADIRS) Mode Selector Unit (MSU) panel 41VU:
  • Set the three OFF/NAV/ATT selector switches to NAV.
On ADIRS MSU panel 41VU:
  • It is possible that the OFF legend of the ADR1, ADR2 and ADR3 pushbutton switches flashes.
  • It is possible that the ON BAT light comes on. On the upper ECAM Display Unit (DU), the memo section shows IRS IN ALIGN > 7 MN (only if FMGC1 and FMGC2 are energized).
    On the CAPT and F/O PFDs:
  • The CAS, vertical speed and altitude data come into view.
  • After approximately 40 seconds, the ATT warning flags go out of view and the attitude data come into view.
3.On the MCDU:
On the MCDU:
  • Turn the BRT knob (or push the BRT key).
  • Push the MCDU MENU mode key.
The MCDU MENU page comes into view.
  • Push the line key adjacent to the FMGC indication.
The aircraft status page comes into view.
  • Push the INIT mode key.
The INIT page comes into view.
  • Enter an airline route code (or a FROM/TO destination).
The code number is shown on the scratchpad line (in the bottom part of the MCDU).
  • Push the line key adjacent to the CO RTE indication (or the FROM/TO indication).
  • The code number comes into view below the CO RTE indication (or the FROM/TO indication).
  • Push the line key adjacent to the IRS INIT indication.
  • The IRS INIT page comes into view.
  • The latitude and longitude are shown below the latitude and longitude indications. The slew prompts (the up and down arrows) adjacent to the LAT indication are shown.
  • The ALIGN ON REF indication is shown on the line adjacent to line key 6R.
NOTE: You can increase or decrease the latitude or/and longitude as shown in Para. 4 and 5. If no latitude or longitude change is necessary, you can go to Para. 6.
NOTE: If you enter an incorrect longitude two times in sequence during PPOS entry, the Air Data/Inertial Reference Unit (ADIRU) will accept this position until the subsequent alignment.
4.For the latitude change:

  • On the MCDU keyboard, push one of the two slew keys.
The latitude coordinates increase or decrease:
  • By one minute, each time you push the slew key
  • By one minute/second, if you push and hold the slew key.
5.For the longitude change:

  • On the MCDU, push the line key adjacent to the longitude coordinates.
The slew prompts (the up and down arrows) move to the LONG indication.
  • On the MCDU keyboard, push one of the two slew keys.
The longitude coordinates increase or decrease as the LAT indication.
6.On the MCDU, push the line key adjacent to the ALIGN ON REF indication.
On the MCDU, the amber CONFIRM ALIGN* indication is shown on the line adjacent to line key 6R.
7.On the MCDU, push the line key adjacent to the CONFIRM ALIGN* indication.
The IRS alignment process starts.
After approximately five minutes:
  • On the CAPT and F/O NDs, the HDG warning flags go out of view and the heading dial comes into view.
After approximately ten minutes:
  • On the upper ECAM DU, the IRS IN ALIGN 1 MN indication goes out of view.
8.On overhead circuit-breaker panel 49VU:
  • Open circuit breaker 10CA1.

9.On rear circuit-breaker panel 121VU:
  • Close circuit breaker 10CA2.

10.Do the same test from Para. 2.
The results are the same.
11.On overhead circuit-breaker panel 49VU:
  • Close circuit breaker 10CA1.

Subtask 34-10-00-860-084-I ** ON A/C NOT FOR ALL
A. IR Alignment from the Multipurpose Control and Display Unit (MCDU):
ACTION
RESULT
1.On rear circuit-breaker panel 121VU:
  • Open circuit breaker 10CA2.

2.On the Air Data/Inertial Reference System (ADIRS) Control and Display Unit (CDU):
  • Set the three OFF/NAV/ATT selector switches to NAV.
On the ADIRS CDU:
  • It is possible that the OFF legend of the ADR1, ADR2 and ADR3 pushbutton switches flashes.
  • It is possible that the ON BAT light comes on.
  • On the upper ECAM Display Unit (DU), the memo section shows IRS IN ALIGN > 7 MN (only if FMGC1 and FMGC2 are energized).
    On the CAPT and F/O PFDs:
  • The CAS, vertical speed and altitude data come into view.
  • After approximately 40 seconds, the ATT warning flags go out of view and the attitude data come into view.
  • Set the SYS DISPLAY selector switch to 1 (2 or 3) and the DATA DISPLAY selector switch to PPOS.

3.On the MCDU:
On the MCDU:
  • Turn the BRT knob (or push the BRT key).
  • Push the MCDU MENU mode key.
The MCDU MENU page comes into view.
  • Push the line key adjacent to the FMGC indication.
The aircraft status page comes into view.
  • Push the INIT mode key.
The INIT page comes into view.
  • Enter an airline route code (or a FROM/TO destination).
The code number is shown on the scratchpad line (in the bottom part of the MCDU).
  • Push the line key adjacent to the CO RTE indication (or the FROM/TO indication).
  • The code number comes into view below the CO RTE indication (or the FROM/TO indication).
  • Push the line key adjacent to the IRS INIT indication.
  • The IRS INIT page comes into view.
  • The latitude and longitude are shown below the LAT and LONG indications. The slew prompts (the up and down arrows) adjacent to the LAT indication are shown.
  • The ALIGN ON REF indication is shown on the line adjacent to line key 6R.
NOTE: You can increase or decrease the latitude or/and longitude as shown in Para. 4 and 5. If no latitude or longitude change is necessary, you can go to Para. 6.
NOTE: If you enter an incorrect longitude two times in a sequence during PPOS entry, the Air Data/Inertial Reference Unit (ADIRU) will accept this position until the subsequent alignment.
4.For the latitude change:

  • On the MCDU keyboard, push one of the two slew keys.
The latitude coordinates increase or decrease:
  • By one minute, each time you push the slew key.
  • By one minute/second, if you push and hold the slew key.
5.For the longitude change:

  • On the MCDU, push the line key adjacent to the longitude coordinates.
The slew prompts (the up and down arrows) move to the LONG indication.
  • On the MCDU keyboard, push one of the two slew keys.
The longitude coordinates increase or decrease as the LAT indication.
6.On the MCDU, push the line key adjacent to the ALIGN ON REF indication.
On the MCDU, the amber CONFIRM ALIGN* indication is shown on the line adjacent to line key 6R.
7.On the MCDU, push the line key adjacent to the CONFIRM ALIGN* indication.
The IRS alignment process starts.
8.On the ADIRS CDU, set the SYS DISPLAY selector switch to 2, then to 3 and make sure that the coordinates shown are the same for the three ADIRUs. Set the SYS DISPLAY selector switch to 1.
The coordinates which are in view on the ADIRS CDU are the same as the coordinates shown on the MCDU.
After approximately five minutes:
  • On the CAPT and F/O NDs, the HDG warning flags go out of view and the heading dial comes into view.
After approximately ten minutes:
  • On the ADIRS CDU, the ALIGN legend of IR1, IR2 and IR3 goes off.
  • On the upper ECAM DU, the IRS IN ALIGN 1 MN indication goes out of view.
9.On overhead circuit-breaker panel 49VU:
  • Open circuit breaker 10CA1.

10.On rear circuit-breaker panel 121VU:
  • Close circuit breaker 10CA2.

11.Do the same test from Para. 2.
The results are the same.
12.On overhead circuit-breaker panel 49VU:
  • Close circuit breaker 10CA1.

5. Close-up
Subtask 34-10-00-865-095-A
A. Close this(these) circuit breaker(s):
PANELDESIGNATIONFINLOCATION
** ON A/C NOT FOR ALL
121VUSATCOM240RVK01
Subtask 34-10-00-410-069-A
B. Close Access
   (1) Install the protective cover on battery power center 105VU.
   (2) Tighten the two screws.
   (3) Close access door 822.
   (4) Remove the access platform(s).
Subtask 34-10-00-860-088-A
C. Put the aircraft back to its initial configuration.
   (1) Do the EIS stop procedure
(Ref. AMM TASK 31-60-00-860-002).
   (2) De-energize the aircraft electrical circuits
(Ref. AMM TASK 24-41-00-862-002).
[Rev.10 from 2021] 2026.04.01 00:57:55 UTC