As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
NON ETOPS VERIFICATION FLIGHT UNSUCCESSFUL. FLASHING MCP SPEED IN FMA WHILE MCP SPEED WINDOW BLANK. GROUNDED - YES. REMOVED AND REPLACED MCP. REMOVED TAGS AND RESET 9 C/B'S MCP INSTALLATION TEST FOOD REF AMM 22-11-34-740-801 AND LRU REPLACEMENT TEST GOOD 22-11-34/501.