-
On the CAPT (IR1) and F/O (IR2) Navigation Displays (ND): The residual ground speed of the IR3 can be read on the CAPT ND by setting the ATT HDG selector switch to CAPT/3.

 -
On the ADIRS CDU: . set the DATA DISPLAY selector switch to TK/GS . set the SYS DISPLAY selector switch to 1, 2, 3 . read the respective ground speed in the CDU display.

 (b)
 Compare the recorded ground speed values with the following limits:

 -
if the residual ground speed error is 15 kts or greater after each of two consecutive flights, replace the ADIRU

 -
if the residual ground speed error is 21 kts or greater at the end of any one flight, replace the ADIRU.

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 IR - BCD and Special Output Words
 Figure 025

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 ATTITUDE, HEADING AND POSITION - ADJUSTMENT/TEST
________________________________________________ TASK 34-14-00-710-003 Operational Test of the Attitude/Heading (ATT/HDG) Switching Function WARNING : MAKE SURE THAT ALL THE CIRCUITS IN MAINTENANCE ARE ISOLATED BEFORE
_______ YOU SUPPLY ELECTRICAL POWER TO THE AIRCRAFT.
 1.
 Reason for the Job

__________________
 Refer to the MPD TASK: 341400-01

 2.
 Job Set-up Information

______________________
 A. Fixtures, Tools, Test and Support Equipment
 -------------------------------------------------------------------------------REFERENCE QTY DESIGNATION -------------------------------------------------------------------------------
No specific access platform 1.6 m (5 ft. 3 in.)
 B. Referenced Information
 -------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
24-41-00-861-002 Energize the Aircraft Electrical Circuits from the External Power 24-41-00-862-002 De-energize the Aircraft Electrical Circuits Supplied
 from the External Power 31-60-00-860-001 EIS Start Procedure 31-60-00-860-002 EIS Stop Procedure
 3. Job Set-up
__________ Subtask 34-14-00-010-050
 A. Get Access
 (1)
 Put the access platform in position at the access door 822.

 (2)
 Open the access door 822.

 1EFF : ALL 1 34-14-00Page 501 1 1 Feb 01/98 1 1 1CES 1

 (3) On the battery power center 105VU:
 -loosen the two screws and remove the protective cover.
 Subtask 34-14-00-865-054
 B. Make sure that this(these) circuit breaker(s) is(are) closed:
 -------------------------------------------------------------------------------PANEL DESIGNATION IDENT. LOCATION -------------------------------------------------------------------------------49VU L/G/LGCIU/SYS1/NORM 1GA C09 49VU NAV PROBES/ADIRU3/PWR/SWTG 8FP F09 49VU NAV PROBES/ADIRU 1/AND AOA 1/26VAC 5FP1 F07 49VU NAV PROBES/ADIRU1/115VAC 4FP1 F06
 105VU ADIRS/ADIRU1/28VDC 6FP1 C02
 **ON A/C 001-049, 051-061, 101-105, 201-203,
 121VU ADIRS/ADIRU/2PWR/SHED 10FP N11 121VU ADIRS/ADIRU/3PWR/SWTG 9FP N10 121VU ADIRS/ADIRU/2/26VAC AND AOA 5FP2 N09 121VU ADIRS/ADIRU/3/26VAC AND AOA 5FP3 N08 121VU ADIRS/ADIRU/2/115VAC 4FP2 N07 121VU ADIRS/ADIRU/3/115VAC 4FP3 N06 121VU ADIRS/ADIRU/2/28VDC 6FP2 N05 121VU ADIRS/ADIRU/3/28VDC 6FP3 N04
 **ON A/C ALL
 121VU HYDRAULIC/LGCIU/SYS2 2GA Q35
 121VU HYDRAULIC/LGCIU/SYS1/GRND SPLY 52GA Q34

R **ON A/C 062-099, 106-149, 151-199, 204-299, 301-399, 401-499,
 121VU ADIRS/ADIRU/2PWR/SHED 10FP N10 121VU ADIRS/ADIRU/3PWR/SWTG 9FP N09 121VU ADIRS/ADIRU/2/26VAC AND AOA 5FP2 N08 121VU ADIRS/ADIRU/3/26VAC AND AOA 5FP3 N07 121VU ADIRS/ADIRU/2/115VAC 4FP2 N06 121VU ADIRS/ADIRU/3/115VAC 4FP3 N05 121VU ADIRS/ADIRU/2/28VDC 6FP2 N04 121VU ADIRS/ADIRU/3/28VDC 6FP3 N03
 1EFF : ALL 1 34-14-00Page 502 1 1 Aug 01/05 1 1 1CES 1

R **ON A/C ALL

 Subtask 34-14-00-860-055
 C. Aircraft Maintenance Configuration
 (1)
 Energize the aircraft electrical circuits (Ref. TASK 24-41-00-861-002).

 (2)
 On the overhead panel : - on the FLT CTL panels 23VU and 24VU, make sure that the FAC, ELAC and SEC pushbutton switches are not pushed (in). The OFF legends are on. - on the ADIRS CDU, make sure that the three OFF/NAV/ATT selector switches are at OFF.

 (3)
 Do the EIS start procedure (PFD and ND only) (Ref. TASK 31-60-00-860-001).

 4. Procedure
_________
 Subtask 34-14-00-710-054
　
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