US (SUPERSEDED BY SL 737-SL-00-025 REV. C). SERVICE LETTER MOS SL 737-SL-00-025 REV. C DISCONTINUED USE OF 3 5 INCH FLOPPY DISKETTES FOR ONBOARD LOADABLE LRU.S. SERVICE LETTER MOS 23-JUL-2014 SL 737-SL-00-026 OPERATOR CORRECTION OF ERRORS IN THE LIFE LIMITED PART LIST AND AIRCRAFT READINESS LOG. SERVICE LETTER