-Radial position errors
-Residual ground speed errors.
This procedure gives accurate removal criteria.
2. Job Set-up Information
______________________
A. 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 34-10-00-860-002 ADIRS Start Procedure 34-10-00-860-005 ADIRS Stop Procedure 34-12-34-000-001 Removal of the ADIRU (1FP1, 1FP2, 1FP3) 34-12-34-400-001 Installation of the ADIRU (1FP1, 1FP2, 1FP3) 34-12-34-991-008 Fig. 601
3. Job Set-up
__________
Subtask 34-12-34-860-052
A. Aircraft Maintenance Configuration
(1)
Energize the aircraft electrical circuits
(Ref. TASK 24-41-00-861-002).
(2)
Do the EIS start procedure (Ref. TASK 31-60-00-860-001).
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(3)
Do the ADIRS start procedure (Ref. TASK 34-10-00-860-002).
(4)
On the center pedestal, on the SWITCHING panel 8VU, make sure that the AIR DATA selector switch is at NORM.
4. Procedure
_________ Subtask 34-12-34-740-051
A. Radial Position Error (RPE)
(Ref. Fig. 601/TASK 34-12-34-991-008)
NOTE : At the end of the flight, the pilot must make an entry of the RPE
____
in the logbook.
NOTE : Do this procedure only at the end of a flight:
____
-
before the ADIRUs are off and
-
before you start a new alignment and
-
before you load a new flight plan into the FMGC.
-------------------------------------------------------------------------------ACTION RESULT -------------------------------------------------------------------------------
On the center pedestal, on one MCDU: On the MCDU:
1.
Push the line key adjacent to the The FMGC page comes into view. FMGC indication
2.
On the keyboard, push the DATA The DATA INDEX page comes into view. mode key
3.
Push the line key adjacent to the The POSITION MONITOR page comes into POSITION MONITOR indication view.
4.
Record each IRS position error shown on line 5.
(1) Calculate the NAV time of the ADIRU as follows:
-record the flight time of the previous flight given in the logbook and add 30 minutes to this time.
NOTE : This 30-minute period is the assumed time interval from the
____ end point of the ADIRU alignment and aircraft door closing before pushback.
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ADIRU - Radial Position Error - Removal Criteria
Figure 601/TASK 34-12-34-991-008
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1 1 May 01/03
1 1
1CES 1
(2) Compare the recorded values with the curve at the time value calculated.
(a)
If the RPE is below the grey band (refer to AREA 1):
-the ADIRU is serviceable and no action is necessary.
(b)
If the RPE is in the grey band (refer to AREA 2):
-it is not necessary to replace the ADIRU but you must do a second check of the RPE immediately after the subsequent flight. If the RPE is again in the grey band, replace the ADIRU (Ref. TASK 34-12-34-000-001) and (Ref. TASK 34-12-34-400-001).
(c)
If the RPE is above the grey band (refer to AREA 3):
-replace the ADIRU (Ref. TASK 34-12-34-000-001) and (Ref. TASK 34-12-34-400-001).
Subtask 34-12-34-740-052
B. Residual Ground Speed Error
NOTE : Do this procedure only at the end of a flight:
____
-
before the ADIRUs are off and
-
before you start a new alignment.
Record the residual ground speed for each IR at the end of the flight when the aircraft is fully stopped.
(1) Record the residual ground speed on the ADIRS CDU on the overhead panel (20VU):
-
set the DATA DISPLAY selector switch to TK/GS
-
set the SYS DISPLAY selector switch to 1, 2 and 3
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