What was found
BLEED 1 FAIL MSG IN FLIGHT WITH BLEED 2 DEFERRED WITH RAPID DECOMPRESSION. PERFORMED QRC .5 & QRH 2.5. DEFERRED IAW MEL 36-00-00-3, TRANSFERRED TO SDI LOG, NO MX PROCEDURES REQUIRED. PLACARD INSTALLED, ACFT OK FOR SERVICE. BLEED 1 FAILED IN FLIGHT. PERFORMED FIM TASK 36-11-00-810-815A, NO FIX. TROUBLESHOOTING WILL CONTINUE, ITEM REMAINS ON MEL. CLEARED DM 1948234. R & R NR ENG FAN AIR VLV IAW AMM 36-11-09. OPERATIONS CHECKED GOOD. THIS CLEARS DI, PLACARD REMOVED, MX NOTIFIED. OK FOR SERVICE.