As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
REF ASA LG PG 60489947 WHILE ACCOMPLISHING ASA TC: NG-364C-0001 ENGINE BLEED AIR HEALTH CHECK. FOUND #2 ENG HIGH STAGE REGULATOR BODY LEAKING AIR. GROUNDED - YES. REMOVED #2 ENG HIGH STAGE REGULATOR REF B737-900 AMM 36-11-07. INSTALLED #2 ENG HIGH STAGE REGULATOR PER AMM 36-11-07. LEAK & OPS CHECK GOOD. REF AMM 36-11-00-710-801.