What was found
BUR - ON CLIMB FOR FLIGHT 2508, RIGHT ENGINE BLEED CAUTION MESSAGE CAME ON 1 MIN AFTER T/O. RETURNED TO THE FIELD AND ACCOMPLISHED A UNEVENTFUL LANDING. FOUND NR 2 AIR CONDITIONING PACK PRECOOLER CRACKED CAUSING THIS DISCREPANCY. AFTER ISOLATING THIS DEFECT RAN BOTH ENGINE'S AND APU BLEED'S NO OTHER DISCREPENCIES NOTED. BLEED AIR FROM THIS CRACK WAS BLOWING UPON SENSE LOOPS. FERRIED AIRCRAFT TO PDX. REMOVED AND REPLACED RT PRECOOLER IAW CRJ 700 AMM TASK 21-53-04-400-801-A01. OPERATIONAL CHECKS GOOD. AIRCRAFT RETURNED TO SERVICE.