A MD83 flight crew; with the first officer flying; reports a strong right rolling tenancy after lift...

Attributes
ACN	1278975
Time
Date	201507
Local Time Of Day	0601-1200
Place
Locale Reference	ZZZ.Airport
State Reference	US
Aircraft 1
Make Model Name	MD-83
Operating Under FAR Part	Part 121
Flight Phase	Takeoff
Flight Plan	IFR
Component
Aircraft Component	Rudder Trim System
Person 1
Function	Captain Pilot Not Flying
Qualification	Flight Crew Air Transport Pilot (ATP)
Person 2
Function	Pilot Flying First Officer
Qualification	Flight Crew Air Transport Pilot (ATP)
Events
Anomaly	Aircraft Equipment Problem Less Severe

Narrative:

After takeoff with the first officer (first officer) flying it was apparent that the aircraft was out of trim. The first officer said he was having trouble keeping the wings level. We then received a vector to the north. We then leveled off and determined the rudder trim was malfunctioning. It took about 8 units of left trim to maintain level flight. We [elected to return to the departure airport] and received vectors back. We determined the aircraft was controllable in the landing configuration at approach speed. We ran the overweight landing checklist and returned for an uneventful landing flown by the captain.

Original NASA ASRS Text

Title: A MD83 Flight Crew; with the First Officer flying; reports a strong right rolling tenancy after lift off. Eventually eight units of rudder trim are required for wings level flight and the crew elects to return to the departure airport for an over weight landing.

Narrative: After takeoff with the First Officer (FO) flying it was apparent that the aircraft was out of trim. The FO said he was having trouble keeping the wings level. We then received a vector to the north. We then leveled off and determined the rudder trim was malfunctioning. It took about 8 units of left trim to maintain level flight. We [elected to return to the departure airport] and received vectors back. We determined the aircraft was controllable in the landing configuration at approach speed. We ran the overweight landing checklist and returned for an uneventful landing flown by the Captain.

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.

A MD83 flight crew; with the first officer flying; reports a strong right rolling tenancy after lift off. Eventually eight units of rudder trim are required for wings level flight and the crew elects to return to the departure airport for an over weight landing.