As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AFTER TAKE OFF THE LANDING GEAR WOULD NOT RETRACT. THE GEAR DID NOT EVEN COME OUT OF THE LOCKS, WE HAD 3 GREEN THE ENTIRE TIME. WE CHECKED THE CB'S AND NONE WERE TRIPPED. JACKED AIRCRAFT AND SWING GEAR SEVERAL TIMES. WE HAD HYD. PRESSURE LIGHT. THE THREE GREENS EXTINGUISHED AND CAME ON AT APROPRIATE TIMES. GEAR SWINDS WERE NORMAL, COULD NOT DUPLICATE DISCREPANCY. WORK DONE IAW MM 32-30-00.