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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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For AOG assistance contact:

CRC Montreal (YUL)
Quick Links

07/11/19

Message Overview:

Fault Message:

H STAB MTR DR UNIT [CH 1] OVER TEMP

Fault Code:

27662271SX

Associated CAS:

STAB CH1 FAIL
(Advisory)

Reporting LRU: Motor Drive Unit (MDU)
System Description: 27-40-00
Schematic Diagram: 27-41-00 [ Global Express ]  [ G5000 ]  [ Global XRS ]
Wiring Diagram: None

Fault Description:

There is a problem with the Motor Drive Unit (MDU).

Possible Causes:

  • Pitch Trim Actuator Motor Drive Unit (A184)

Troubleshooting Tips:

Advisory Wire/Service Bulletin: None

Forum Articles/Infoservice/Newsletter: None

The MDU transmits this information to the FCU#1 through a 3 bits binary code. This information can be retrieved in the CAIMS System diagnostic:

  1. SYSTEM DIAG
  2. 27-00 FLIGHT CONTROLS
  3. FLIGHT CONTROL UNIT #1
  4. LRU TEST
  5. DISPLAY ADVANCED EFCS DATA
  6. Go to page 5 of 8.

This fault may sometime be cleared by performing the flight control system reset procedure. If the message comes back more then once within 10 flight legs, replace the MDU.

Quick Links:

Removal of the Pitch-Trim Actuator-Motor Drive-Unit AMM 27-41-17-000-801 [ Global Express ]  [ G5000 ]  [ Global XRS ]
Installation of the Pitch-Trim Actuator-Motor Drive-Unit AMM 27-41-17-400-801 [ Global Express ]  [ G5000 ]  [ Global XRS ]

Troubleshooting Recommendations:

  1. Replace Motor Drive Unit.
  2. Do close out.

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