What was found
OVEN DOES NOT HEAT ENOUGH. FOUND CB POPPED. WHEN RESET CB, A VERY, VERY SERIOUS ARC OCCURRED BEHIND OVEN. LATER FOUND CHARRED WIRES BEHIND OVEN. EXAMINATION OF ANOTHER AIRCRAFT REVEALED EXTREMELY TIGHT CLAMPING OF R53 HARNESS USING TIE-WRAP ON SELF-STICK STANDOFF. IT IS NOW BELIEVED THAT THIS METHOD OF CLAMPING INDUCES CHAFING AND SUBSEQUENT CONTACT BETWEEN CONDUCTORS AND SHORT CIRCUITING. GALLEY MANUFACTURER STATES THEY DO NOT USE TIEWRAP/STICKON AS A MEANS OF WIRE SUPPORT. EG3924 ISSUED TO AFFECTED AIRCRAFT TO CHECK HARNESSES AND REMOVE TIEWRAP/STICK-ON IF INSTALLED. NO OTHER ANOMALIES REPORTED. ALERT BULLETIN "TRIPPED CIRCUIT BREAKERS - RESETTING" ISSUED 1/24/05. NO FURTHER ACTION REQUIRED.