Flight Crew Flight Instructor; Flight Crew Air Transport Pilot (ATP); Flight Crew Instrument; Flight Crew Multiengine
Flight Crew Last 90 Days 200; Flight Crew Total 12575; Flight Crew Type 1700
Distraction; Troubleshooting
Aircraft Equipment Problem Less Severe
Flight Crew Diverted; Flight Crew Landed As Precaution
Aircraft; Human Factors
We departed for ZZZ with 2 crew and 1 passenger prior to the Tower opening and picked up our IFR clearance to ZZZ from [TRACON].Preflight checks were normal; conditions were VMC; Part 91 flight; owner on board.Flaps 0 were selected climbing out of 400 feet however the flaps did not retract. We continued climb to a safe altitude; communicated with ATC and began working on the problem.We were unable to retract the flaps; canceled our IFR flight plan; requested VFR flight following and diverted to ZZZ1 which is where our maintenance base for this aircraft is as well as having a longer runway to deal with a potential flap issue on landing.1 of the 4 circuit breakers associated with the flap controls was apparently not fully seated. It's possible that a headset cord could have caught it. This breaker is not in a particularly good location for a visual inspection; moving forward we will check these breakers more closely should the situation arise again.
corporate Captain reported being unable to retract the flaps after takeoff.