What was found
EGT EXCEEDANCE ENG 1+2 GROUNDED - YES. FOR ENG #1, ACCOMPLISHED STEP F. (4), HPT BLADES BORESCOPE INSP B737-800 FIM 71-06 TASK 805 AND REF B737-800 AMM TASK 72-00-00-200-807-F00 HPT BORESCOPE INSP. ACCOMPLISHED HPT BOROSCOPE INPECTION IAW AMM 72-00-00-200-807-F00. ALL DAMAGE WITHIN PUBLISHED LIMITS. NOTED THAT BOTH BLADES THAT INCORPORATED NOTCHES HAD 2 NOTHCES VISIBLE AND INTACT. ACCOMPLISHED #1 ENG GEAR BOX COVER LK CHECK REF AMM TASK 71-00-00-700-801-F00. WHILE ACCOMPLISHING FIM 71-06 TASK 805 STEP F.(3) FOUND AIR LEAKING FROM THE REVERSE FLOW SENSOR LINE FOR THE HIGH STAGE REGULATOR. REPLACED THE HIGH STAGE REGULATOR OPS CHECK GOOD REF AMM TASKS 36-11-07-000-801/-400-801. COMPLETED FIM TASK 71-06 TASK 805 STEPS (3), (4) AND G. NO FURTHER DEFECTS NOTED.