As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
THE LT MAIN "DOWN AND LOCKED" LIGHT WOULD NOT ILLUMINATE. R & R BULB ON LT GEAR DOWN LOCK ANNUNCIATOR. PERFORMED LANDING GEAR FUNCTIONAL CHECK AND FULL HYD SYS BLEED. SYS CHECKS GOOD. SERVICED GEAR BOTTLE AS REQUIRED. ALL WORK DONE IAW MM 32-01-00.