As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
"A/F TEST FAILED" CAUTION MESSAGE ON NR 1 ENGINE AFTER A/F TEST. CHECKED CDS, FOUND FAULT 400A ON NR 1 PEX REF FIM 61-20-09-810-806. FOUND NR1 PEC HAS PRIOR HISTORY OF SAME FAULT ON OTHER ACFT. R & R NR1 PEC IAW AMM 61-20-36-000-801/400-801. CHECKS GOOD IAW AMM 61-20-36-720-801 AND MX 6710006. C/W OPS TEST OF PROPELLER AUTOFEATHER AND UPTRIM SYS IAW AMM 61-20-00-710-801. CHECKS GOOD. NO FURTHER DEFECTS NOTED. RETUREND TO SERVICE.