B737 Next Generation Undifferentiated
Flight Crew Instrument; Flight Crew Multiengine; Flight Crew Air Transport Pilot (ATP)
Flight Crew Last 90 Days 140; Flight Crew Total 9100; Flight Crew Type 6200
Troubleshooting
Aircraft Equipment Problem Less Severe
Flight Crew Returned To Departure Airport; General Flight Cancelled / Delayed
Aircraft
Upon climb out from runway 28R in ORD the Captain was unable to trim the stabilizer nose up with the yoke electric trim switch. He advised me of this and I helped him with manual trim from the trim wheel. We leveled off at 5;000 ft. and 250 knots for controllability and received permission from ATC to fly a box pattern to troubleshoot. We subsequently slowed to 230 knots for the pattern.We accomplished the Electronic Stabilizer Trim Inoperative procedure and got a patch through to [Maintenance Control] with dispatch monitoring on radio. Maintenance agreed with the procedure and with our decision to return to ORD. A flaps 15 landing was safely performed per the checklist and the aircraft was returned to [the] Gate.
B737 flight crew reported stabilizer trim malfunction during climb out.