What was found
BOTH CDU FAILED. QRF TO VVI. AFTER TROUBLESHOOTING IN FMCS BOTH CDU WERE CLEANED. OPERATIONAL CHECK OK.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
BOTH CDU FAILED. QRF TO VVI. AFTER TROUBLESHOOTING IN FMCS BOTH CDU WERE CLEANED. OPERATIONAL CHECK OK.