What was found
NR 1 ENGINE FAN VIBRATION, 1.8 IN CAUTION RANGE AT FLT LVL 320. PERFORMED FAN BLADE TANG LUBRICATION IAW AMM 72-21-02. PERFORMED HIGH POWER ENGINE RUN. OPS CHECKED GOOD. OK FOR SERVICE.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
NR 1 ENGINE FAN VIBRATION, 1.8 IN CAUTION RANGE AT FLT LVL 320. PERFORMED FAN BLADE TANG LUBRICATION IAW AMM 72-21-02. PERFORMED HIGH POWER ENGINE RUN. OPS CHECKED GOOD. OK FOR SERVICE.