What was found
AIRCRAFT WAS GROUNDED: SIGNIFICANT AIR FRAME VIBRATION FELT PASSING 26,500 FT UNTIL 28,000 FT. FELT IT AGAIN LEVEL AT 13,000 FT. **SUPPLEMENTAL REPORT WILL BE SUBMITTED** (OPEN)
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
AIRCRAFT WAS GROUNDED: SIGNIFICANT AIR FRAME VIBRATION FELT PASSING 26,500 FT UNTIL 28,000 FT. FELT IT AGAIN LEVEL AT 13,000 FT. **SUPPLEMENTAL REPORT WILL BE SUBMITTED** (OPEN)