ODIFICATION OF STARTER;GENERATOR. PN 286545-7 AND -9 - RECOMMENDED REPLACEMENT OF STATOR HOUSING ASSEMBLY. PN 6430800.4. SERVICE BULLETIN MOS MSC APU - AIRBORNE AUXILIARY POWER - 3.0 INCH DIAMETER SURGE CONTROL VALVE - INSPECTION OF THE CHROME CUSTOMER PLATING ON THE BUTTERFLY SHAFT. PN 3180688-1. USED ON THE 3.0 INCH DIAM