What was found
DISCREPANCY: NOSE GEAR WOULD NOT RETRACT ON TAKEOFF OUT OF BOS. CORRECTIVE ACTION: PINNED ALL GEAR AND INSPECTED BY MX FOR FERRY FLIGHT FROM BOS TO RDU. UPON RETURN TO RDU FOUND OLEO CENTER/EXTEND PROX SENSOR BRACKET. REMOVED AND REPLACED PROX SENSOR BRACKET IAW CRJ AMM 32-52-01. REMOVED AND REPLACED TARGET BRACKET IAW CRJ AMM 32-61-05. ADJUSTED PROX SENSOR IAW CRJ AMM 32-61-05. PREFORMED RETRACTION CHECK OF LANDING GEAR SYSTEM IAW CRJ AMM 32-30-00. ALL OPS CHECKS GOOD AT THIS TIME.