As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AFTER TAKEOFF GEAR WOULD NOT RETRACT. ATC REPORTED THAT OUR TRANSPONDER DID NOT APPEAR ON (IT WAS SELECTED TO ALT). AFTRE CLIMBING THROUGH 2000 FT A LOUD CLUNK AND POP WAS HEARD. GEAR THEN RETRACTED NORMALLY. GEAR HANDLE WOULD NOT MOVE UNTIL (POP) WAS HEARD. ITEM IS UNDER INVESTIGATION.