What was found
ON TAKEOFF, ENGINE WAS UNABLE TO ACHIEVE FULL POWER AND ACFT RETURNED TO BASE. A NORMAL LANDING WAS CARRIED OUT. UPON INSP, THE P3 LINE FROM THE COMPRESSOR CASE TO THE FCU WAS FOUND CRACKED, PREVENTING FULL P3 AIR FROM REACHING THE FCU. LINE WAS REPLACED, NO FURTHER ISSSUES.