As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
SATCOM LOG SHOW SAT1 FAIL. GROUNDED - YES. ACCOMPLISHED SDU SOFTWARE LOAD REF B737-900 AMM 23-15-00-470-801 3 FILES LOADED "CONFIG CRC" AC391300 VERIFIED, CIM OPTIONS SAVED. VERIFIED AOC DIR NUMBERS PRESENT. SATCOM SYSTEM TEST PASS REF AMM 23-15-00-730-801 CALLS MADE AND RECEIVED WITH DISPATCHED ALONG WITH TWO STAGE CALL TO AIRCRAFT.