What was found
AFTER LANDING AND ENGINES AT IDLE. RH DUCT PRESSURE WAS AT 6 PSI, LH DUCT PRESSURE WAS AT 18PSI. AFTER SWITCHING TO APU BLEED AIR BOTH PRESSURES ROSE TO 05 PSI. GROUNDED - YES. (RESOLVED ON W/O: 1969307 TASKCARD: N/R-00001 ) FOUND #2 HSR FAILD, REPLACED HSR REF MM 36-11-07-400-801. LEAK CK GOOD. REQUIRES CROSSOVER CK. . DURING CROSSOVER BLEED OPS TEST, DUCT SPLIT OF 17PSI FOUND AT 80% N1. REMOVED AND REPLACED TEMP BLEED AIR OVER TEMP SENSOR REF AMM 36-11-05-400-801 AND PRECOOLER CONTROL VALVE 36-12-03-400-801. NO LEAKS NOTED, THIS CLEARS MEL 36-9B CN 11056409 REVERSE MEL PROCEDURES PLACARDS REMOVED SEAMC NOTIFIED.