What was found
HEAVY AIRFRAME VIBRATION AT 35000 FT FLIGHT LEVEL, 260 KNOTS, 92 PERCENT N1. VIBRATION GOES AWAY WHEN POWER REDUCED. REMOVED AND REPLACED NR 2 ENGINE HMU PER MM.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
HEAVY AIRFRAME VIBRATION AT 35000 FT FLIGHT LEVEL, 260 KNOTS, 92 PERCENT N1. VIBRATION GOES AWAY WHEN POWER REDUCED. REMOVED AND REPLACED NR 2 ENGINE HMU PER MM.