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(WARNING)
RED MESSAGE (CAUTION)
AMBER MESSAGE (ADVISORY)
CYAN MESSAGE (STATUS)
WHITE MESSAGE Require immediate crew attention. These messages are accompanied by flashing master warning, triple chime attenson with or without voice message or dedicated tone. Require immediate crew awareness and future crew action may be required in the form of alternate system selection or performance limitation. These message are accompanied by flashing master caution and a single chime. Indicate safe or normal system operation which require crew awareness, over and above the dark cockpit philosophy. Indicate minor failures or reduction in systems capability, which require no crew action.

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06/10/19

Message Overview:

Fault Message:

[ACSC1-B] LH PCK IN FLOW SENS /WRG

Fault Code:

2162414ECS

Associated CAS:

L PACK AUTO FAIL
(Caution)

L PACK FAULT
(Advisory)

Reporting LRU: Air Conditioning System Controller (ACSC) 1
System Description: 21-51-00
Schematic Diagram: 21-51-00 [ Global Express ]  [ G5000 ]  [ Global XRS ]
Wiring Diagram: 21-51-01 [ Global Express ]  [ G5000 ]  [ Global XRS ]

Fault Description:

Left Pack Inlet Flow Sensor has been detected out of range by Air Conditioning System Controller (ACSC) 1.

Possible Causes:

  • Pack Inlet Flow Sensor 1 (MT66)
  • Air Conditioning System Controller (ACSC) 1 (A87)
  • Junction Box (JB5)
  • Associated Wiring

Troubleshooting Tips:

Advisory Wire/Service Bulletin:

  • AW700-21-0160 - "PACK FAULT" CAS message while CAIMS / OMS is active (Global Express / XRS - (9002 to 9312, 9314 to 9380, 9384 to 9429) and Global 5000 - (9127 to 9383, 9389 to 9400, 9404 to 9431 and 9998))

Forum Articles/Infoservice/Newsletter: None

CAIMS has Pack Pressure Xdcr. Data for ACSC controllers on all 4 channels. This will show sensor data and give you an idea of problem areas.

Quick Links:

Removal of the Pack Inlet Flow-Sensors AMM 21-51-13-000-801 [ Global Express ]  [ G5000 ]  [ Global XRS ]
Installation of the Pack Inlet Flow-Sensors AMM 21-51-13-400-801 [ Global Express ]  [ G5000 ]  [ Global XRS ]
Removal of the Air-Conditioning System Controllers AMM 21-60-21-000-801 [ Global Express ]  [ G5000 ]  [ Global XRS ]
Installation of the Air-Conditioning System Controllers AMM 21-60-21-400-801 [ Global Express ]  [ G5000 ]  [ Global XRS ]
Removal of the Junction Box JB5 AMM 24-00-09-000-801 [ Global Express ]  [ G5000 ]  [ Global XRS ]
Installation of the Junction Box JB5 AMM 24-00-09-400-801 [ Global Express ]  [ G5000 ]  [ Global XRS ]
Wire Repair - Maintenance Practices - ALL SPM 20-12-10-02 [ Global Express ]  [ G5000 ]  [ Global XRS ]

Troubleshooting Recommendations:

  1. Verify 28 VDC at Pack Inlet Flow Sensor 1, MT66P1-A.

    1. If there is power, go to step 3.
    2. If there is no power, continue with next step.

  2. Perform continuity check of JB5.

    1. If there is continuity, continue with next step.
    2. If there is no continuity, replace JB5 and do close out.

  3. Verify ground at Pack Inlet Flow Sensor 1, MT66P1-B.

    1. If system checks are good, do close out.
    2. If fault remains, continue with next step.

  4. Swap Pack Inlet Flow-Sensor 1 with Pack Inlet Flow-Sensor 2.

    1. If system checks are good, replace Pack Inlet Flow-Sensor 1 and do close out.
    2. If fault remains, continue with next step.

  5. Do wiring checks between Left Pack Inlet Flow Sensor and ACSC 1.

    1. If the wiring checks are not good, repair the defective associated wiring and do close out.
    2. If the wiring checks are good, continue with next step.

  6. Replace ACSC 1.
  7. Do close out.

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