What was found
ABNORMAL LEFT ENG VIBE ABOVE 77 PC N2. REMOVED AND REPLACED NR 1 EDP, OPS CHECK GOOD.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
ABNORMAL LEFT ENG VIBE ABOVE 77 PC N2. REMOVED AND REPLACED NR 1 EDP, OPS CHECK GOOD.