Fault Message:

RIGHT INBD GND SPLR ACTR FAULT

Fault Code:

27656192SX

Associated CAS:

CONFIG SPOILERS
(Warning)

GND LIFT DUMP
(Caution)

GND LIFT DUMP
(Advisory)

NO TAKEOFF
(Advisory)

The Right Inboard Ground Spoiler Actuator is defective detected by the Flight Control Unit 2.

• Right Inboard Ground Spoiler Actuator
• Right Inboard Ground Spoiler (GS) Proximity Switch Sensor (PSS) (MT124)
• Flight Control Unit (FCU) 2 (A66)

Advisory Wire/Service Bulletin: None

Forum Articles/Infoservice/Newsletter: None

This fault may sometimes be cleared by performing the flight control system reset procedure.

1. Did the Spoilers deploy at the time of failure?

   1. If NO, go to step 6.
   2. If YES, continue with next step.

2. Access and disconnect FCU 2 Connector A66BP1 and Right GS Proximity Sensor Connector MT124P1. Perform a continuity check as follows:

   From	To	Result
   MT124P1-A	Ground
   MT124P1-B	Ground
   MT124P1-A	MT124P1-B

   1. If there is continuity, repair defective wiring as required and do close out.
   2. If there is no continuity, continue with next step.

3. Perform a continuity check as follows:

   From	To	Result
   MT124P1-A	A66BP1-7A
   MT124P1-B	A66BP1-7B

   1. If there is no continuity, repair defective wiring as required and do close out.
   2. If there is continuity, continue with next step.

4. Swap FCU 2 with FCU 1. Is the fault still present?

   1. If NO, replace FCU 2 and do close out.
   2. If YES, continue with next step.

5. Replace the Right Inboard GS Proximity Switch Sensor.
6. Deploy the ground actuator by using the hydraulic lock override feature. Cycle the Ground Spoiler surface 3-4 times.

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

7. Replace Right Inboard Ground Spoiler Actuator.
   NOTE: The FCU is able to differentiate between a defective selector valve and a defective actuator.
8. Do close out.