What was found
AIR TURN BACK ENG 2 BLEED LEAK. GROUNDED - YES. PERFORMED TSM 36-22-00-810-901-A FOUND LEAK AT BOTTOM SECTION OF FORWARD PRECOOLER CLAMP & PINHOLE LEAK AT FORWARD OUTBOARD CORNER ON TOP OF PRECOOLER. ASKED AVIONICS FOR PRECAUTIONARY CHECK OF ELEMENT. CHECKED SENSOR (2HF2) CONTINUED TO LP 100215336-1 CONTINUTED FROM LP 100215335-2 RESISTNCE READ (.3) OHMS, NO SHORTS TO GROUND. LOOP CHECKED GOOD. SWAPPED FWD & AFT CLAMP FOR T/S. FOUND CLAMP DAMAGED NEED TO REPLACE AFT PRECOOLER CLAMP. CONT. FROM LP 100215336-1REPLACED PRECOOLER ON NR 2 ENG IAW AMM 36-11-42-400-804-A UP TO STEP 4.A. PIN INSTALLED FWD CLAMP & LEAK CHECK. NO FAULT NOTED. OK FOR SERVICE.