What was found
ON T/O ROLL AT 70KTS, GOT THE NR 1 AND NR 2 BLEED HOT CAUTION LIGHT, AFTER FOLLOWING ABNORMAL CHECKLIST, BLEED, PRESSURIZATION ALL WORKING NORMALLY. INTERIGATED CDS, NO FAULTS FOUND, C/W OPS TEST OF THE BLEED AIR SYS IAW AMM TASK 36-11-00-710-802, OPS TEST GOOD , NO DEFECTS NOTED. COULD NOT DUPLICATE. RETURNED TO SERVICE. NO PARTS REPLACED.