As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
SWITCH LIGHTS FOR THE ALTERNATE DRIVES FOR TE FLAPS & LE SLATS DO NOT ILLUMINATE. FOUND BOTH ALTERNATE FLAP & ALTERNATE SLAT SWITCHES MISSING DIODE BLOCK, PCN 563-3969. REPLACED BOTH SWITCHES. ALTERNATE FLAP & SLAT DRIVE SYS TESTED OK IAW AMM 27-51-00.