As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ON APPROACH WE HEARD HUMMING/LOW VIBRATIONS IN THE FLIGHT DECK. WHEN VIBES STOPPED 10 SECONDS LATER HYD SYS 2 LOW PRESSURE EICAS MESSAGE. HYD EDP 2A FAIL. EMERGENCY DECLARED. REMOVED RT ENG EDP PER A220 AMP 29-11 (963844) INSTALLED NEW RT ENG EDP PER A220 AMP 29-11. STILL NEEDS OPS AND LEAK CHKS. (859299) RT ENG EDP PASSES OPS TEST AS PER A220 AMP 29-11. NO LEAKS NOTED. (LP# 4455982)