As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
WHEN GEAR WAS RETRACTED AFTER TAKEOFF, THE LT MAIN INDICATED BOTH RED AND GREEN LIGHTS AND THE NOSE AND RT MAIN INDICATED RED LIGHTS. UPON PLACING THE LEVER IN THE DOWN POSITION 3 GREEN AND NO RED LIGHTS WERE OBSERVED. REMOVED U/C HANDLE SWITCH P/N 25-7NF859-601, NSN FOR FAULTY CONTACTS AND INSTALLED NEW UNDERCARRIAGE MICROSWITCH P/N 25-7NF859-601, NSN AND PERFORMED OPERATIONAL CHECK WITH NO FAULTS FOUND I.A.W HAWKER 800XP M/M CH 32-60-00.