<< >> NASA ASRS Report 1326818, January 2016

The pilot of a C525 reported control issues suspected to be due to a trim malfunction. After returning to the field; and test of the systems; no issues were identified. The aircraft departed again with no further problems.

Attributes
ACN	1326818
Time
Date	201601
Local Time Of Day	1801-2400
Place
Locale Reference	ZZZ.Airport
State Reference	US
Environment
Flight Conditions	Marginal
Aircraft 1
Make Model Name	Citationjet (C525/C526) - CJ I / II / III / IV
Operating Under FAR Part	Part 91
Flight Phase	Takeoff
Route In Use	Vectors
Flight Plan	IFR
Component
Aircraft Component	Rudder Trim System
Person 1
Function	Pilot Flying
Qualification	Flight Crew Private
Events
Anomaly	Aircraft Equipment Problem Less Severe

Narrative:

Departed runway; was assigned 2;000 feet; runway heading and expect vectors.upon departure experienced trim pulling to the right and difficulty in controlling heading and altitude. Suspected trim malfunction and disengaged autopilot. Tried to assess cause; when unable to identify; requested return to airport. Flew heading and altitude assigned as best as possible and returned to airport.retested the autopilot; trim; heading etc. Once on ground power to try to recreate the malfunction and was unable.after complete check out of FMS; autopilot and flight director; relaunched and flew flight filed for with no issues.

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Original NASA ASRS Text

Title: The pilot of a C525 reported control issues suspected to be due to a trim malfunction. After returning to the field; and test of the systems; no issues were identified. The aircraft departed again with no further problems.

Narrative: Departed runway; was assigned 2;000 feet; runway heading and expect vectors.Upon departure experienced trim pulling to the right and difficulty in controlling heading and altitude. Suspected trim malfunction and disengaged autopilot. Tried to assess cause; when unable to identify; requested return to airport. Flew heading and altitude assigned as best as possible and returned to airport.Retested the autopilot; trim; heading etc. once on ground power to try to recreate the malfunction and was unable.After complete check out of FMS; Autopilot and Flight Director; relaunched and flew flight filed for with no issues.

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.