What was found
INSPECTION TYPE:N/A ATB - APPROX 45 MINS AFTER DEPARTURE THE CREW REPORTED, LOST OF THE NR 1 AIR CONDITIONING PACK. BASED ON POTENTIAL EN ROUTE ICING CONDITIONS IT WAS DETERMINED THAT THE FLT WOULD RETURN TO HKG. T/S PER FIM 36-12-00 FIG 103, FOUND APU LOAD BLEED VALVE NOT FULLY CLOSED. CLOSED VALVE PERFORMED ADJ/TEST OF PNEUMATIC SYS IAW 36-00-03- 5. CK GOOD. APU LOAD BLEED VALVE POS SWITCH WIRING RETURNED TO NORMAL REF WDM 36-16-01 & EO MD11-4950-24851. VLV OPS CK OK.