What was found
R1 DOOR WARNING HORN DOES NOT COME ON WHILE USING PRESS TO TEST SWITCH, DOOR WARNING LIGHT FLASHES DURING TEST. AWM: 52-73-01 ESPM: CH. 20 FOUND WIRE W5273-1085-22 PULLED LOOSE FROM TERMINAL ON R1 DOOR PUSH BUTTON TEST SWITCH (40WN). RETERMINATE SAME, SWITCH REQUIRE INSTALL AND OPS CHECK. AMM: 52-73-14-04-02 REINSTALLED R1 DOOR WARNING TEST SWITCH PER ABOVE REF. OPS CHECK GOOD. THIS CLEARS MEL PLACARD REMOVED. ACFT OK TO CONTINUE.