What was found
MCI - UNUSUAL VIBRATION NOTED FROM NR 1 ENGINE AT IDLE TO 55 PERCENT N-1 AFTER PUSHBACK. REPLACED NR 1 ENGINE PER VANGUARD TASK CARD J271-00-01-C. LEAK AND OPERATIONAL CHECKS OK. (X)
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
MCI - UNUSUAL VIBRATION NOTED FROM NR 1 ENGINE AT IDLE TO 55 PERCENT N-1 AFTER PUSHBACK. REPLACED NR 1 ENGINE PER VANGUARD TASK CARD J271-00-01-C. LEAK AND OPERATIONAL CHECKS OK. (X)