As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WAS GROUNDED: NUMBER 2 ENGINE VIBE 1.1 AT 76% N1, ACCOMPANIED WITH HUD JITTER BETWEEN 75-78% N1. TACTILE VIBE FELT IN FLOORBOARD AT SAME 75-78% N1.**SUPPLEMENTAL REPORT FOR (AALA202312227007): CORRECTED ENGINE VIBRATION DISCREPANCY IN ACCORDANCE WITH JPC 08L40077001. ENGINE VIBRATION OPERATION CHECKS GOOD **(CLOSED).