A. If the BITE test gives the maintenance message: SEC2 OR BUS2 FROM ADR2
 - read the Post Flight Report (PFR) for the maintenance messages ADR1 with AFS in IDENT or ADIRU 1/2/3 DISAGREE with the AFS source.
 (1) If one of these maintenance messages comes into view on the PFR:

 - do this trouble shooting procedure (Ref. TASK 34-13-81-810-823).

 (2) If these maintenance messages do not come into view on the PFR:

 - replace the SEC-2 (1CE2) (Ref. AMM TASK 27-94-34-000-001) and (Ref. AMM TASK 27-94-34-400-001).
 (a) If the fault continues:
 - do a check and repair the wiring of the DGI-06 signal from the SEC 2 (1CE2) to the first terminal block, COM and MON parts (Ref. ASM 27-92/54).
 B. Do the test given in Para. 3.
 「一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一1 EFF : ALL ∞∞27-94-00∞∞∞∞∞∞∞∞∞∞Page 285
 Feb 01/03R
 CES  Loss of the ADR 2 Bus 2 for the SEC 3

 1. Possible Causes
_______________
 - SEC-3 (1CE3)

 - wiring of the DGI-07 signal from the SEC 3 (1CE3) to the first terminal block

 2. Job Set-up Information
______________________
 A. Referenced Information
 -------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
34-11-00-810-861 Different Angle of Attack Value on the three ADIRUs 34-11-00-810-870 Airspeed Discrepancy on the PFD or on the Standby Airspeed Indicator 34-13-00-810-998 Altitude or Airspeed Discrepancy between CAPT PFD and F/O PFD 34-13-81-810-825 Runaway or Drift of One ADR3 Parameter Identified by
 the ELACs and the SECs AMM 27-94-34-000-001 Removal of the SEC (1CE1,1CE2,1CE3) AMM 27-94-34-400-001 Installation of the SEC (1CE1,1CE2,1CE3) AMM 27-96-00-740-001 BITE Test of the EFCS (Ground Scanning) ASM 27-92/55
 3. Fault Confirmation
__________________
 A. Test
 (1) Do the BITE test of the EFCS (ground scanning) (Ref. AMM TASK 27-96-00-740-001).
 NOTE : If there is an EFCS message which is not related to an ADR
____ FAULT (NAV ADRX FAULT or ADR-STATUS), do not remove the ADIRU; refer to these procedures:
 (a) If flight in turbulence:

 - (Ref. TASK 34-11-00-810-870).

 (b) If the fault continues:

 - (Ref. TASK 34-13-00-810-998)

 - (Ref. TASK 34-11-00-810-861).

 「一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一1 EFF : ALL ∞∞27-94-00∞∞∞∞∞∞∞∞∞∞Page 286
 Feb 01/03R
 CES

 4. Fault Isolation
_______________

 A. If the BITE test gives the maintenance message: SEC3 OR BUS2 FROM ADR2
 - read the Post Flight Report (PFR) for the maintenance messages ADR3 with AFS in IDENT or ADIRU 1/2/3 DISAGREE with the AFS source.
 (1) If one of these maintenance messages comes into view on the PFR:

 - do this trouble shooting procedure: (Ref. TASK 34-13-81-810-825).

 (2) If these maintenance messages do not come into view on the PFR:

 - replace the SEC-3 (1CE3) (Ref. AMM TASK 27-94-34-000-001) and (Ref. AMM TASK 27-94-34-400-001).
 (a) If the fault continues:
 - do a check and repair the wiring of the DGI-07 signal from the SEC 3 (1CE3) to the first terminal block, COM and MON parts (Ref. ASM 27-92/55).
 B. Do the test given in Para. 3.
 「一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一1 EFF : ALL ∞∞27-94-00∞∞∞∞∞∞∞∞∞∞Page 287
 Feb 01/03R
 CES  Loss of the ADR 3 Bus 3 for the SEC 1

 1. Possible Causes
_______________
 - SEC-1 (1CE1)

 - wiring of the DGI-07 signal from the SEC 1 (1CE1) to the first terminal block

 2. Job Set-up Information
______________________
 A. Referenced Information
 -------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
34-11-00-810-861 Different Angle of Attack Value on the three ADIRUs 34-11-00-810-870 Airspeed Discrepancy on the PFD or on the Standby Airspeed Indicator 34-13-00-810-998 Altitude or Airspeed Discrepancy between CAPT PFD and F/O PFD 34-13-81-810-823 Runaway or Drift of One ADR1 Parameter Identified by
 the ELACs and the SECs AMM 27-94-34-000-001 Removal of the SEC (1CE1,1CE2,1CE3) AMM 27-94-34-400-001 Installation of the SEC (1CE1,1CE2,1CE3) AMM 27-96-00-740-001 BITE Test of the EFCS (Ground Scanning) ASM 27-92/53
　
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