What was found
AFTER SERVICING OXYGEN OF UPPER CREW BOTTLE - BOTTLE WAS INSTALLED & DURING TURN ON AT BOTTLE OXYGEN LINE & REGULATOR RUPTURED & CAUSED FLASH FIRE "A" PIT OXYGEN BOTTLE AREA. INSPECTED PURGED AND LEAK CHECKED CREW OXYGEN SYSTEM IAW OPS 4.901 AND TEST DRAWING 7649000 WORK PROCEDURE RECORDED ON JAC EMERY 358-001. R&R CREWS OXYGEN REGULATOR IAW DC-8 MM 35-10-4. NOTED LEAK CHECK. R&R LINE TO CREWS OXYGEN IAW DC-8 MM 20-12-0 & 20-13 -0 NEED LEAK CHECK.