As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLT 738 FROM TOL TO MMIO. AFTER TAKEOFF, GEAR LEVEL WOULD NOT MOVE TO UP POSITION. WARNING HORN WAS SOUNDING AND BOTH PACKS TRIPPED OFF AND AUTO PRESSURIZATION INOPERATIVE. PERFORMED CCIA AOM ABNORMAL PROCEDURE 06-1, AIR TURNBACK AND LANDED IN TOL WITHOUT INCIDENT. AIRCRAFT CONTROL HANDLE LOCK SYSTEM WAS CHECKED AND REPLACED THE AIR SENSOR PROXIMITY SWITCH. OPERATIONAL SYSTEM CHECKS GOOD IAW MM 32-31-11 AND 32-09-221. AIRCRAFT RETURNED TO SERVICE.