What was found
PDR FLIGHT 2553 RETURN TO FIELD - NR 1 ENGINE N1 VIBRATION 1.7 TO 1.9. COMPLIED WITH PIN LUBES AND ENGINE RUNS. NO PARTS REPLACED. OPERATIONAL CHECK GOOD. AIRCRAFT RETURNED TO SERVICE.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
PDR FLIGHT 2553 RETURN TO FIELD - NR 1 ENGINE N1 VIBRATION 1.7 TO 1.9. COMPLIED WITH PIN LUBES AND ENGINE RUNS. NO PARTS REPLACED. OPERATIONAL CHECK GOOD. AIRCRAFT RETURNED TO SERVICE.