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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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03/15/21

Message Overview:

Message Name:

ROTGSST SC FAIL

Message Code:

B3-007581

Associated CAS:

PROX SYS FAULT
(Advisory)

Reporting LRU: PSEU LRU
System Description: 32-60-00
Schematic Diagram: 32-61-00
Wiring Diagram: 27-61-09
32-61-09
32-61-12

Message Description:

R Outboard Ground Spoiler Sensor PX14 signal conditioning failed.

Possible Causes:

  • Proximity-Sensor Electronic Unit (PSEU) (A9)
  • Proximity Sensor (RH) (PX14)
  • Associated Wiring

Troubleshooting Tips:

Advisory Wire/Service Bulletin: None

Forum Articles/Infoservice/Newsletter: None

Quick Links:

Removal of the Spoiler Proximity Sensor AMM 27-61-09-000-801
Installation of the Spoiler Proximity Sensor AMM 27-61-09-400-801
Operational Test of the Ground Spoiler Proximity Sensors AMM 27-61-09-710-801
Removal of the Proximity-Sensor Electronic Unit (PSEU) AMM 32-61-09-000-801
Installation of the Proximity-Sensor Electronic Unit (PSEU) AMM 32-61-09-400-801
Functional Test of the Proximity-Sensor Electronic Unit (PSEU) AMM 32-61-09-720-801
Standard Practices - Replace Wiring SPM 20-12-00-02
Standard Practices - Wire Repair SPM 20-12-10-02

Troubleshooting Recommendations:

  1. Pull and reset the PSEU gear system breakers (CB1-C13, CB1-C14, CB2-C13, CB2-C14), recheck the system for the fault.
  2. If PX02, PX05, PX08, PX11 and PX18 also indicate Signal Conditioning Failure, troubleshoot these sensors for a short to ground. Perform the operational test of the proximity sensors IAW AMM 27-61-09-710-801.
    NOTE: Sensor resistance should be made with a meter using a < 10 mA supply of current. Never apply voltage through a sensor! Current will magnetize the sensor rendering it unreliable. Sensor resistance is typically 11 to 13Ω.
  3. Troubleshoot and repair or replace PX14 per the installation procedure IAW AMM TASK 27-61-09-000-801, then check the sensor out IAW AMM TASK 27-61-09-710-801.
  4. If possible, download and have field service review the PSEU NVM. Further troubleshooting will depend on results of the PSEU NVM.
  5. If failure is on PX14 only with the sensor and wiring good, and the NVM download doesn't identify external inputs as the fault, replace the PSEU IAW AMM TASK 32-61-09-000-801, AMM TASK 32-61-09-400-801.
  6. Functional check the proximity sensor electronic unit IAW AMM TASK 32-61-09-720-801.

60_lh_cbpnl60_rh_cbpnl60_ground_spoilerproximity_sensor1

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