What was found
00-23 - REPEAT OF PREV VIB WRITEUP FOR NR 1 ENGINE AT FL 210 W/CRUISE PWR 320 KNOTS AFT 1 MIN IN LVL FLT NR 1 ENG BEGAN SHAKING.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
00-23 - REPEAT OF PREV VIB WRITEUP FOR NR 1 ENGINE AT FL 210 W/CRUISE PWR 320 KNOTS AFT 1 MIN IN LVL FLT NR 1 ENG BEGAN SHAKING.