As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ON ENGINE RUN RT ENGINE ON HIGH STAGE AIR FLUX + - 5 PSI. AFTER RUNNING ENGINE ON HI STAGE FOR APPROX 10 MIN (PACK ON) AND SHIFTING TO LOW STAGE, LOW STAGE AIR BLED TO ALMOST ZERO. (SUSPECT TEMP THEROMOSTAT). REPLACED RT ENGINE FAN AIR TEMP SENSOR PER MM 36-11-17. NEED TO COMPLETE FROM STEP 3E(11) PG 406.