Flight Crew Instrument; Flight Crew Air Transport Pilot (ATP); Flight Crew Multiengine
Aircraft Equipment Problem Less Severe
Aircraft Equipment Problem Dissipated; Flight Crew Returned To Departure Airport; General Flight Cancelled / Delayed; General Maintenance Action
Aircraft
On takeoff leg immediately after; Gear and Flap retraction we received the 'Flaps' aural warning. After 1;500 feet AGL we divided the duties with the First Officer (Pilot Flying) and talking to ATC and the Captain accomplishing the QRH procedure. The Flap Disagreement light was noted. The QRH procedure recommended we select the flaps back to the last position which was flaps 15 for takeoff. After selecting Flaps 15 and with the Engine Power reduced for descent for landing. Back in ZZZ; the aural warning stopped and Flap Disagreement light went out. QRH procedure was completed and recommended to land immediately. After landing; we left the flaps at 15 and taxied to parking. Logbook entry completed and Maintenance was unable to duplicate the problem. Aural Warning on Takeoff leg after Flaps were selected to Up. Malfunction of the Flap Control computer is a possible cause.
Captain reported a flaps aural warning after flap and gear retraction; causing an air turnback and precautionary landing.