As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
RT HYD SYS PRESS EICAS MSG DURING TAXI OUT. RETURNED TO GATE AND WAS GROUNDED BY MAINTENANCE. MAINTENANCE FOUND #3 BRAKE HOSE LEAKING.REMOVED AND REPLACED #3 BRAKE HOSE IAW AMM 32-41-15 NO LEAKS NOTICED. INSTALLED TEMPORALLY LINE FROM HYDRAULIC KIT P/N 24600100360. AIRCRAFT RETURNED TO SERVICE.