<< >> NASA ASRS Report 1486500, October 2017

Pc-12 flight crew reported the rudder trim failed to the far right position and could not be moved. They successfully diverted.

Attributes
ACN	1486500
Time
Date	201710
Local Time Of Day	1201-1800
Place
Locale Reference	ZZZ.Airport
State Reference	US
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Make Model Name	PC-12
Operating Under FAR Part	Part 135
Flight Phase	Climb
Flight Plan	IFR
Component
Aircraft Component	Rudder Trim System
Person 1
Function	Captain Pilot Flying
Qualification	Flight Crew Commercial
Person 2
Function	Pilot Not Flying First Officer
Qualification	Flight Crew Commercial
Events
Anomaly	Aircraft Equipment Problem Critical

Narrative:

On initial climb out through approximately 1;000 feet AGL the blue cas message autopilot fail and yaw damp fail came on for about 3 seconds and then went away (autopilot was never turned on). The trim was stuck in the far right position between the last 2 white lines and could not be moved to the left. We continued our climb up to 10;000 while troubleshooting the yaw damp and rudder trim. We concluded it could not be fixed airborne and decided we were going to divert. We then advised the passengers of our diversion. ATC gave us vectors for the ILS where an uneventful landing was made.

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Original NASA ASRS Text

Title: PC-12 flight crew reported the rudder trim failed to the far right position and could not be moved. They successfully diverted.

Narrative: On initial climb out through approximately 1;000 feet AGL the blue CAS message autopilot fail and Yaw damp fail came on for about 3 seconds and then went away (autopilot was never turned on). The trim was stuck in the far right position between the last 2 white lines and could not be moved to the left. We continued our climb up to 10;000 while troubleshooting the yaw damp and rudder trim. We concluded it could not be fixed airborne and decided we were going to divert. We then advised the passengers of our diversion. ATC gave us vectors for the ILS where an uneventful landing was made.

Data retrieved from NASA's ASRS site and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.