As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
LANDING LIGHT BULBS, OPERATES FOR 10 SECONDS THEN BURNS OUT. FORMING MILKY COATING ON INSIDE SURFACE OF LIGHT. SUSPECT MFG DEFECT SINCE ALL 3 FAILURES ARE OF THE SAME LOT NUMBER. LOT NRS NR1) 02-03-06 17 0824, NR2) 02-03-06 17 0823 NR3) 02-03-06 17 0824.