What was found
DURING CLIMB OF THE AIRCRAFT AS FLIGHT AV536 FROM SAP-HONDURAS TO SAL, THE AIRCRAFT TURNED BACK TO SAP AIRPORT DUE TO A BLEED 2 FAIL MESSAGE WHILE BLEED SYS 1 WAS DEFERRED. NO OVERWEIGHT LANDING REPORTED. ENGINE 2 FAIN AIR VALVE WAS REPLACED PER MAINTENANCE MANUAL INSTRUCTIONS AND FOUND NOT DISCREPANCIES AFTER PERFORMING REQUIRED TEST. ADDITIONALLY, THE NACELLE PRESSURE REGULATING SHUT OFF VALVE WAS REPLACED TO CLEAR THE DIFFERED ENGINE 1 BLEED SYSTEM. THE AIRCRAFT WAS RETURNED TO SERVICE AFTER CORRECTING THE REPORTED FAILURES.