What was found
FLT 372, SLC-JFK, AIR TURNBACK TO SLC. ENG 1 BLEED FAIL FAILED AFTER T/O RAN ECL WHICH LIMITED ALT TO 31000 FT, ENGINE BLEED PRESSURE REGULATING SHUTOFF VALVE (PRSOV) LEFT SIDE ENGINE BLEED OFF, ITEM PLACED ON MEL 36-12-01A CAT C DEACTIVATED AFFECTED LT PRSOV IAW AMP BD500-A-J36-11-01-00AAA-560A-A, ACCOMPLISHED METHOD ONE. VERIFIED NO EVIDENCE OF EXCESSIVE HPV LEAKAGE, A DAMAGED HPV SEALING RING, A MISSING OR BROKEN RETAINING CLIP, OR ANY OTHER CONDITION REQUIRING HPV REPLACEMENT IAW AMP BD500-A-J36 -11-02- 00AAA- 369A-A, HIGH PRESSURE VALVE (HPV) CLIP & SEALING RING. AIRCRAFT OK TO CONTINUE UNDER MEL. PER MCC STEPHEN MX4 UPDATED PLACARD INSTALLED. OPEN.