What was found
DUCT PRESSURE SPLIT, L 19 PSI, R 42 PSI READINGS CONSISTENT IN CLIMB AND CRUISE.ACFT GROUNDED. WHILE ACCOMPLISHING T/C #NG-36WC-00001 STEPS 1 TO 5 (G) (2) SUSPECTED 450 DEGREE F THERMOSTAT FAILED AND PRECOOLER CONTROL VALVE SENSOR FAILED. R AND R THE 450 DEGREE F THERMOSTAT ON THE NR 1 ENGINE IAW AMM 36-11-05-000-801-/400-801. R AND R PRECOOLER CONTROL VALVE SENSOR ON NR 1 ENGINE IAW AMM 36-12-03-000-801/400-801. LEAK CHECKED, NO LEAKS FOUND. COMPLETED T/C NG-36WC-0001. OPS CHECKED GOOD.