As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
BLEED TRIP OFF LIGHT ILLUMINATED AFTER 28 PSI SPLIT ON CLIMB WILL NOT EXTINGUISH. ACFT GROUNDED. FOUND PRECOOLER CONTROL VALVE LOOSE AND SHEARED SHAFT, REPLACED VALVE REF AMM 36-12-02-400-801, INSTALLATION TEST GOOD. ACCOMPLISHED HEALTH CHECK T/C NG- 36WC-00001, NO DEFECTS NOTED. ACCOMPLISHED ENGINE BLEED AIR CROSSOVER OPS TEST IAW AMM 36-11-00-710-801 NR 2 ENGINE , ALL PARAMETERS NORMAL.