What was found
DURING TAKEOFF HIGH TEMP LIGHT IN TAIL COMPARTMENT RESULT IN UNSCHEDULED LANDING/RETURN TO STL. PNEUMATIC PRESS REGULATOR RELIEF LINE LOOSE HEAT EXCHANGE VENTING TO TAIL COMPARTMENT RT HEAT EXCHANGE PERRY SEAL LEAKING. TIGHTENED B-NUT ON LT PRESS REGULATOR RELIEF LINE REPOSITIONED HEAT EXCHANGER SEALS REPLACED RT PAC PERRY SEAL. LEAK CHECK TAIL COMPARTMENT WITH ENGINES AT HI POWER PER MD 9-36-07. LEAK CHECK ALL NORMAL.