As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
MSP - FLT 421 - WHILE TAXIING, THE PILOT NOTICED RAPID LOSS OF HYDRAULIC PRESSURE AND THE NOSEWHEEL STEERING BECAME STIFF. AFTER RETURNING TO HANGAR, MAINTENANCE FOUND A LINE CHAFED BY A CLAMP IN THE RIGHT FLAP WELL. THE FAULTY LINE WAS REPLACED AND LEAK CHECKED AND THE AIRCRAFT WAS RETURNED TO SERVICE. (X)