What was found
WHILE ACCOMPLISHING TC 78273000, INTERROGATED THE FMC CDU FOR ENGINE FAULTS, FAULT CODE 73-20052 WAS ILLUMINATED. ACFT GROUNDED. ACCOMPLISHED EEC TEST NO DEFECTS NOTED IAW MM 73-21-00.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
WHILE ACCOMPLISHING TC 78273000, INTERROGATED THE FMC CDU FOR ENGINE FAULTS, FAULT CODE 73-20052 WAS ILLUMINATED. ACFT GROUNDED. ACCOMPLISHED EEC TEST NO DEFECTS NOTED IAW MM 73-21-00.