What was found
SAL - FLT 581 - DURING CRUISE, ENGINE NR 1 BLEED VALVE REMAINS CLOSED AND THE ENGINE NR 2 PRECOOLER REACHED THE LIMITS IN A SINGLE BLEED OPERATION. THE AIRCRAFT WAS DEVIATED TO SAL STATION FOR MAINTENANCE. AFTER LANDING AT SAL, TECHS REPLACED THE PRESSURE REGULATOR BLEED VALVE ON ENGINE NR 1 PER AMM 36-11-52, ON ENGINE NR 2 THE FAN AIR VALVE CONTROL THERMOSTAT (P/N 342B030000, WAS REPLACED PER AMM 36-11-43. AN ENGINE RUN UP WAS PERFORMED PER AMM 71-00-00. BLEED SYSTEM WAS OPERATIONG NORMALLY. ALSO, A TEST FLIGHT WAS PERFORMED PER AMM 71-00-00. BLEED SYSTEM WAS OPERATING NORMALLY. ALSO, A TEST FLIGHT WAS PERFORMED. ALL RESULTS WERE SATISFACTORY AND THE AIRCRAFT RETURNED TO NORMAL OPERATION. (M)