As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ON CLIMBOUT FROM ANC LANDING GEAR WOULD NOT RETRACT. AIRCRAFT RETURNED TO ANC AND MX CLEANED WEIGHT ON WHEEL SWITCHES. THE NEXT DAY AIRCRAFT HAD A SIMILAR PROBLEM AND MX REPLACED THE LT WEIGHT ON WHEEL SWITCHES. NO FURTHER PROBLEMS HAVE BEEN NOTED SINCE.