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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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Quick Links

09/07/19

Message Overview:

Fault Message:

LEFT OUTBD WING AI TEMP SENSOR /WRG

Fault Code:

3615426BMC

Associated CAS:

WING A/ICE FAULT
(Advisory)

WING A/ICE SENSOR
(Advisory)

Reporting LRU: Bleed Management Controller (BMC) 1
System Description: 30-12-00
Schematic Diagram: 30-11-00 [ Global Express ]  [ G5000 ]  [ Global XRS ]
Wiring Diagram: 30-11-01 [ Global Express ]  [ G5000 ]  [ Global XRS ]

Fault Description:

A difference of greater than 9°C has been detected between the two Temperature Sensing Elements of the LEFT OUTBD WING AI TEMP SENSOR. Inhibited during Take-off and Landing.

NOTE: On Bleed Management Controller (BMC) P/N GG546-1017-11 and older, the difference is 6°C instead of 9°C.

Possible Causes:

  • Left Outboard Anti-Ice Temperature Sensor (E38)
  • Bleed Management Controller (BMC) 1 (A69)
  • Data Acquisition Unit (DAU) 3 (A30)
  • Associated Wiring

Troubleshooting Tips:

Advisory Wire/Service Bulletin:

  • AW700-36-0365 - Bleed management controller - Data Gathering to reduce No Fault Found (NFF) rate

Forum Articles/Infoservice/Newsletter:

  • Forum Article 2011-VOL 8 issue 23 - Bleed Management Controller (BMC) Top 10 No Fault Found (NFF) vs. Reliability Improvement Modification Program (RIMP) implementation
  • Questionnaire for replacing the BMC. Follow instructions using this (Fill out form)

NOTE: The WAIT sensor is a PT500 type which gives 500 ohms at 0°C with resistance increments of approximately 2 ohms per °C.

  • The WAITS values can be monitored into CAIMS at any time on the ground. Temperature for Inboard and Outboard sensors should reflect actual ambient temperature
  • The value for Inboard sensor is only available for Channel A (Control) in the PMAT. Inboard WAIT from Channel B (Monitoring) can not be obtained
  • Resistance of the INBD and OUTBD WAITS sensing elements should be as per the table below in regard to ambient temperature

    • Temperature (°C) Sensor Resistance (Ohms)
    -60 381.64
    -50 401.505
    -40 421.317
    -30 441.074
    -20 460.774
    -10 480.417
    500
    10 519.517
    20 538.974
    30 558.372
    40 577.71
    50 596.988
    60 616.208
    70 635.369
    80 654.471
    90 673.515
    100 692.5
    110 711.427
    120 730.296
    130 749.107
    140 767.861
    150 786.557
    160 805.195
    170 823.776
    180 842.299
    190 860.765
    200 879.174
    210 897.526
    220 915.821
    230 934.059
    240 952.239
    250 970.363
    260 988.43

Quick Links:

Removal of the Anti-Icing Temperature Sensors AMM 30-11-05-000-801 [ Global Express ]  [ G5000 ]  [ Global XRS ]
Installation of the Anti-Icing Temperature Sensors AMM 30-11-05-400-801 [ Global Express ]  [ G5000 ]  [ Global XRS ]
Removal of the Data Acquisition Units (DAU) AMM 31-42-01-000-801 [ Global Express ]  [ G5000 ]  [ Global XRS ]
Installation of the Data Acquisition Units (DAU) AMM 31-42-01-400-801 [ Global Express ]  [ G5000 ]  [ Global XRS ]
Removal of the Bleed Management Controller AMM 36-11-33-000-801 [ Global Express ]  [ G5000 ]  [ Global XRS ]
Installation of the Bleed Management Controller AMM 36-11-33-400-801 [ Global Express ]  [ G5000 ]  [ Global XRS ]
Wire Repair - Maintenance Practices - ALL SPM 20-12-10-02 [ Global Express ]  [ G5000 ]  [ Global XRS ]

Troubleshooting Recommendations:

  1. Make sure 'OUTBD WING AI TEMP SENSOR' is installed properly.

    1. If installation fixes the fault, do close out.
    2. If fault remains, continue with next step.

  2. Perform wiring checks between Left Outbd WAITS and BMC 1.

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

  3. Perform wiring checks between Left Outbd WAITS and DAU 3.

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

  4. Swap DAU 3 with DAU 1.

    1. If system checks are good, replace DAU 3 and do close out.
    2. If fault remains, continue with next step.

  5. Swap BMC 1 with BMC 2.

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

  6. Replace Left OUTBD WING AI TEMP SENSOR.
  7. Do close out.

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