As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
HYD 3 LO PRESS IN FLIGHT. QRH DID NOT FIX PROBLEM. DECLARED EMERGENCY. UPON LANDING LIMITED BRAKING AND AIRCRAFT PULLED TO THE RIGHT. FLT3092. HYD #3 NO DEFECTS NOTED. REMOVED AND REPLACED #2 ENG IDG IAW AMM. OPS AND LEAK CHECKED GOOD.