What was found
EXCESSIVE VIBRATION AND GRINDING SOUND ON NR 3 ENG POWER LEVER, INCREASES WITH SPEED AND ALTITUDE. ENGINE NR 3 USED 1 GALLON OF OIL DURING THE 1 HOUR PLUS 15 MIN FLIGHT. C/W ENGINE BORESCOPE PER W/C 7200-5005. NO DEFECTS NOTED.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
EXCESSIVE VIBRATION AND GRINDING SOUND ON NR 3 ENG POWER LEVER, INCREASES WITH SPEED AND ALTITUDE. ENGINE NR 3 USED 1 GALLON OF OIL DURING THE 1 HOUR PLUS 15 MIN FLIGHT. C/W ENGINE BORESCOPE PER W/C 7200-5005. NO DEFECTS NOTED.