What was found
LEFT CDU FAILED 1 HR AFTER T/O. PULLED C/B AND LEFT OUT FOR 20 MINS, RESET AND CDU DID NOT WORK. RETURNED TO JFK. REPLACED LEFT CDU, OPS CHECK GOOD.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
LEFT CDU FAILED 1 HR AFTER T/O. PULLED C/B AND LEFT OUT FOR 20 MINS, RESET AND CDU DID NOT WORK. RETURNED TO JFK. REPLACED LEFT CDU, OPS CHECK GOOD.