As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
RT ENG BLEED OFF LIGHT ON WITH ALSO THE RT PACK OFF LIGHT ON DURING TAXI. AIRCRAFT LINED UP FOR TAKE OFF AND RT ENG. BLEED LIGHT DID NOT EXTINGUISH DURING ENGINE ACCELERATION. AIRCRAFT ABORTED TAKEOFF AND RETURNED TO GATE. MAINTENANCE GROUNDED AIRCRAFT. REMOVED AND REPLACED RIGHT PRSOV IAW AMM 36-11-09. AIRCRAFT RELEASED FOR FLIGHT.