Category Archives: F900 Troubleshooting

Holds Falcon 900 specific troubleshooting information

How can I troubleshoot a yaw damper on the ground?

 

Wiggle the wing test. One fellow rocking the wing tip.  Yaw damper linear actuator responds.  Rudder perfectly opposes each swing of the vertical fin

Copy this link for video:

https://youtube.com/shorts/HSCOv7yR17M?si=lkw_B7UvkRsMeXUN

 

Power up self test on F900, SPZ 8000.  Video shows reaction with hydraulic power applied.

 

If no hydraulic power is applied, you can feel it in the rudder pedals.  This one is particularly weak.  The servo is possibly failed.

 

 

 

 

 

 

 

 

 

 

F900 Stab trim normal will not run in either direction

TL;DR  Turned out to be  bad stab jack, installed in the airplane for less than 2 years.

 

F900EX

 

customer reports he can hear the main relays click…  no up or down, no report on the autopilot.

Note, thus is the HStab jack that has internal normal limit switches.   The other stab jacks have external limit switches in 4 CF.

 

print PDF

PowerPoint print so that you can draw on it.  (LibreOffice Impress)

f900 stab trim

 

 

 

 

 

 

F900ex SN 001. Missing wire diagrams

 

1. CPDLC , FANS 1A, and associated CVR upgrade.

2. IOCABUCCI espresso machine upgrade.   Need at least parts list of plumbing.

3. ? Elt upgrade?

4. DU875AF display upgrades.

5. WR 870 Upgrade, PROSTAR aviation.

6.  CDU-820(?) Upgrades.   3 FMS CDUS are upgraded, no prints.

7. Davtron clock upgrades

 

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