0008 NC *New driwings added to modification. Instl. ElectriCal Wire Harness E.O.:. 003, 004, 005, 006, 007 Wire List V727RE E.O.: 001, 002, 003 B. Boeing 727 Service Bulletin 72753A0171, *dated December'14, 1989. Subject: Fuselige - Station 1182 Pressure Bulkhead Web, • Crack Repair'and Preventive Modification . • C.