- If there is continuity: do a check of the wiring of the ATT HDG selector switch (13FP): pin A/1 to diode (18FP) pin 1 pin A/2 to the first terminal block (Ref. ASM 34-11/01). . If there is no continuity:
* repair the above wiring. . If there is continuity:
* replace the C/B-NAV AND PROBES/ADIRU3/SWTG/SPLY (8FP).
「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 ∞∞34-11-00∞∞∞∞∞∞∞∞∞∞Page A224
May 01/05R
CES Airspeed Discrepancy on the PFD or on the Standby Airspeed Indicator
1. Possible Causes
_______________
2. Job Set-up Information
______________________
A. Referenced Information
-------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
AMM 30-31-00-710-001 Operational Test of the Probe Ice Protection AMM 34-10-00-170-001 Flushing of the Principal Total Pressure Lines AMM 34-10-00-170-003 Draining and Flushing of Standby Pneumatic Circuits AMM 34-11-15-200-001 Inspection/Check of the Pitot Probe (9DA1,9DA2,9DA3) AMM 34-13-00-740-002 INTERFACE TEST of the ADR AMM 34-13-00-790-002 Leak Test of the Principal Static and Total Air Data
System AMM 34-21-00-790-001 Low range leak test of standby pneumatic circuits
3. Fault Confirmation
__________________
A. Test
(1) Not applicable, you cannot confirm this fault on the ground.
4. Fault Isolation
_______________
A. If there is an airspeed discrepancy:
(1) Do the operational test of the probe ice protection (Ref. AMM TASK 30-31-00-710-001).
R (a) If the test gives a maintenance message, do the trouble shooting R procedure related to the maintenance message.
(2) Do the Interface test of the ADR (Ref. AMM TASK 34-13-00-740-002).
R (a) If the test gives a maintenance message, do the trouble shooting R procedure related to the maintenance message.
(3) Do a visual check of the pitot probe (Ref. AMM TASK 34-11-15-200-001) of the related side:
- the PITOT PROBE 1 (9DA1) if there is a discrepancy on the CAPT PFD
- the PITOT PROBE 2 (9DA2) if there is a discrepancy on the F/O PFD
- the PITOT PROBE 3 (9DA3) if there is a discrepancy on the standby airspeed indicator.
「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 ∞∞34-11-00∞∞∞∞∞∞∞∞∞∞Page A225
May 01/05 CES
(4) Flush the related pitot line:
- for the CAPT or F/O total pressure line (Ref. AMM TASK 34-10-00-170-001)
- for the standby total pressure line (Ref. AMM TASK 34-10-00-170-003).
(5) Do a leak test of the related system:
- for the main air data system (Ref. AMM TASK 34-13-00-790-002) and repair if necessary
- for the standby air data system (Ref. AMM TASK 34-21-00-790-001) and repair if necessary.
B. After the subsequent flight, make sure that the fault does not continue.
R **ON A/C 051-099, 106-149, 204-299, 301-399, 401-499,
TASK 34-11-00-810-871
Inability to know the SDI Code Related to the ADM1 and the ADM5
1. Possible Causes
_______________
- ADM-L TOTAL PRESSURE (19FP1)
- ADM-L STATIC PRESSURE (19FP5)
- SDI pin programming of the ADM (19FP1)
- SDI pin programming of the ADM (19FP5)
2. Job Set-up Information
______________________
A. Referenced Information
-------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
AMM 34-11-17-000-001 Removal of the Air Data Module (19FP1,19FP2,19FP3,19FP4,19FP5,19FP6, 19FP7,19FP8) AMM 34-11-17-400-001 Installation of the Air Data Module
(19FP1,19FP2,19FP3,19FP4,19FP5,19FP6, 19FP7,19FP8) AMM 34-13-00-740-002 INTERFACE TEST of the ADR ASM 34-13/03
3. Fault Confirmation
__________________
A. Test Do the Interface test of the ADR (system 1) (Ref. AMM TASK 34-13-00-740-002).
4. Fault Isolation
_______________
A. If the test gives the maintenance message ADM1 (19FP1)/ ADM5 (19FP5):
- get access to the total pressure ADM1 (19FP1) (Ref. AMM TASK 34-11-17-000-001) (Para. 2.B.)
- disconnect the electrical connector of the ADM (19FP1) 中國航空網 www.k6050.com 航空翻譯 www.aviation.cn 本文鏈接地址：A320 Trouble Shooting Manual 排故手冊 導航 NAVIGATION 1(46)
