HS 125 Series
Flight Crew Air Transport Pilot (ATP); Flight Crew Flight Instructor; Flight Crew Multiengine; Flight Crew Instrument
Flight Crew Last 90 Days 125; Flight Crew Total 20459; Flight Crew Type 5486
Troubleshooting
Aircraft Equipment Problem Less Severe
Air Traffic Control Provided Assistance; Flight Crew Landed As Precaution; Flight Crew Returned To Departure Airport; General Maintenance Action
Aircraft
After landing; taxied in to pick up additional passengers. After clearing runway; completed after landing checklists; reselected flaps for 15 degrees; and switch settings to takeoff. After landing and taxing in requested a Copilot SIC to complete Post Flight Walk Around; and secure next Clearance while I completed payment for landing charges. Completed before start; and start checklists; and taxied out to line up. Cell Call came in from next Location ground transport; which did interfere with flow; especially because the SIC is low time in Make and Model! Completed Call and re-completed Line UP items; including verifying trims; Fuel; Flap Setting selected to 15 degrees.During transition between 80 knots and V1/VR; felt that aircraft controls indicated flaps were at more than 15 degrees? I continued the takeoff; achieved adequate speed; and V2 + 10 speed! The after positive rate of climb and before retracting gear and flaps; noted that Flap indicator was showing flaps at 45 degrees! I attempted to retract flaps; but they did not retract!We Held on ANY changes to configuration; and announced to tower that we needed an immediate return to runway. We notified tower that we had a Flap malfunction! We notified passengers; and landed uneventfully.Being an A and P and PIC on the aircraft; I immediately examined Flap assemblies found no irregularities! I reset the electrical controllers; Bus and restarted engines!During this process I immediately called the [Duty Manager]; and informed him of what took place! During the call the reset process enabled full operations of the flaps; with visual confirmation; and extension and retraction in ALL settings 4 times! [Duty Manager] was satisfied with the maintenance checks; as well as I and SIC were.We reconfigured for takeoff and departed to next airport. Next Airport functions all worked; but to be safe I requested that the aircraft be moved to nearby airport for Maintenance Inspection and Remedy of indicator and setting discrepancy.
HS-125 Captain reported the flaps indicated 45 degrees and they were unable to retract them during takeoff.