As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
APU COMPARTMENT STA-1885 LIGHT SWITCH/ INTERPHONE SUPPORT BRACKET AND ATTACHED HORZ STIFFINER HAS CORROSION AND FILLET SEALANT MISSING IN AREAS. RL013 INSTALLED LIGHT SWITCHES S428 AND APU INTERPHONE JACK D413 IAW B757 AMM 23-41-00-400-801 AND SWPM 20-83-11 AND PERFORMED TEST OF THE SERVICE LIGHTS AND SERVICE INTERPHONE SYSTEM AT LIGHT SWITCH S428 AND APU JACK D413 IAW B757 AMM 33-31-00-712-007, 23-41-00-715-001 OPS CHECK GOOD.