302) REDUCE OCCURRENCE OF INCORRECT GPS DATE. SERVICE BULLETIN COMPLIED WITH 03-OCT-2008 MOS 23-FEB-2009 3353:18 AFL 804 SB 964-0452-23-39 COMMUNICATION - XK516D HF RADIO SYSTEM - UNIT MODIFICATION (MOD) 48 TO XK516D1 HF TRANSCEIVER (HF RECOMMENDED TRANSCEIVER). PN 964-0452-012. -042. OR -052: INSPECTION AND REPLACEMENT OF HIGH FR

ECEIVER (TRyGIMBAL DRIVE INTERCONNECT CABLE ASSEMBLIES AND THE CLOCK SPRING CLAMPS. VENDOR SERVICE BULLETIN 15-APR-2014 VSB 964-0052-23-41 MOS COMMUNICATION - XK516D HF RADIO SYSTEM - UNIT MODIFICATION (MOD) 49 TO XK51601 HIGH FREQUENCY (HF) OPTIONAL TRANSCEIVER (TRANSCEIVER). PN 964-0452-011. -022. OR -042: DISABLE TWO DISCRETE COUPL