What was found
NR 1 ENG PRECOOLER VALVE FAILED HEALTH CHECK. ACFT GROUNDED. REPLACED NR 1 ENG PRECOOLER CONTROL VALVE IAW MM 36-12-02-400-801. LEAK AND OPS CHECKED GOOD.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
NR 1 ENG PRECOOLER VALVE FAILED HEALTH CHECK. ACFT GROUNDED. REPLACED NR 1 ENG PRECOOLER CONTROL VALVE IAW MM 36-12-02-400-801. LEAK AND OPS CHECKED GOOD.