B737 flight crew reported an auto and electric trim system anomaly resulting in a return to the depa...

Attributes
ACN	1675109
Time
Date	201908
Place
Locale Reference	ZZZ.Airport
State Reference	US
Environment
Flight Conditions	VMC
Aircraft 1
Make Model Name	B737 Undifferentiated or Other Model
Operating Under FAR Part	Part 121
Flight Phase	Climb
Flight Plan	IFR
Component
Aircraft Component	Horizontal Stabilizer Trim Motor
Person 1
Function	First Officer Pilot Flying
Qualification	Flight Crew Multiengine Flight Crew Instrument Flight Crew Air Transport Pilot (ATP)
Experience	Flight Crew Last 90 Days 211 Flight Crew Total 2785 Flight Crew Type 1651
Person 2
Function	Pilot Not Flying Captain
Qualification	Flight Crew Multiengine Flight Crew Instrument Flight Crew Air Transport Pilot (ATP)
Experience	Flight Crew Last 90 Days 230 Flight Crew Total 3758
Events
Anomaly	Aircraft Equipment Problem Critical

Narrative:

During takeoff and initial climb auto trim and electric trim via trim switch on pilot control wheel operated normally. Around 3;000 ft. I tried to trim via trim switch with no success. As we accelerated more control force was required and neither auto trim nor electric trim via control wheel switch would work. I briefed the captain on the issue then we transferred the controls to allow the captain to try his trim switch with no luck. We transferred control back to me while he ran appropriate checklists and communicated to all parties. Afterwards we decided to air return to ZZZ. Aircraft was hand flown utilizing manual pitch trim back to a normal approach and landing in ZZZ.

Original NASA ASRS Text

Title: B737 flight crew reported an auto and electric trim system anomaly resulting in a return to the departure airport.

Narrative: During takeoff and initial climb auto trim and electric trim via trim switch on pilot control wheel operated normally. Around 3;000 ft. I tried to trim via trim switch with no success. As we accelerated more control force was required and neither auto trim nor electric trim via control wheel switch would work. I briefed the Captain on the issue then we transferred the controls to allow the Captain to try his trim switch with no luck. We transferred control back to me while he ran appropriate checklists and communicated to all parties. Afterwards we decided to air return to ZZZ. Aircraft was hand flown utilizing manual pitch trim back to a normal approach and landing in ZZZ.

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.