As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLT#20, LHR-JFK. (ETOPS) 'ON HYD PAGE ENG 2 EDP SHOWS IN LINE GREEN WITH HYD ENG 2 PUMP PUSH BUTTON SWITCH IN AUTO .- DEPRESSUIZTION FUNCTION (ENGINE DRIVEN PUMP SYS - DEPRESS FUNC); REF AWM 29-13-02, CHK WIRING AT FIN 3074GD SHIELDING AND WIRE. THE CONTINUITY CHECK IS GOOD. REMOVED AND REPLACED ENG 2 PUMP PRESS SWITCH FIN 3074GD AS A PRECAUTIONARY T/SHOOTING IAW 29-12-00. RAN ENG 2 AT IDLE AND OPS TEST YELLOW HYD SYS IAW 29-13-00 WITH FLT CONTROLS OPS TEST. ALL OPS CHECK IS NORMAL. CLEARED MDDR# 493753. MX-4 UPDATED AND MCC NOTIFIED.'