As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ON FLIGHT 5561, THE CREW WAS TAXING OUT WHEN THEY NOTICED THE RT ENGINE WOULD ONLY MAKE 1000 FT LBS TORQUE ON TAKE OFF. THE TAKE OFF WAS ABORTED AND THE AIRCRAFT RETURNED TO GATE WITHOUT ANY FURUTHER INCIDENT. THE CORRECTIVE ACTION WAS THAT MAINTENANCE REMOVED AND REPLACED THE BLEED VALVE. STILL AWAITING MORE INFORMATION.