What was found
(CAN) INVEST OF CLUNKING SOUND COMING FROM NOSE AREA OF DA20-C1 , FOUND THAT LT LWR ENG MNT TO FIREWALL ATTACH BOLT WAS UNDER TORQUE (5 FT LBS VS. 15 FT LBS). MNT HAD APPROX. 60 THOU END PLAY,WAS SOURCE OF CLUNKING SOUND. RT MNT WAS ALSO UNDER TORQUE AT ABOUT 5 FT LBS. ALL OF THE MS21306-1C WASHERS UNDER THE HEAD OF THESE BOLTS HAD BEEN DISHED IN. UPPER ENG MNT TO FIRE WALL BOLTS ON A/C WERE REMOVED AND FOUND MS21306-1C WASHERS UNDER BOLT HEAD WERE ALSO DISHED IN. MS21306-1C WASHERS HAVE ID OF AN-7 WASHER ON AN ENG MNT BOLT THAT IS AN AN-6. A/C WAS CHECKED AND FOUND ALL WASHERS TO BE DAMAGE UPPER AND LOWER WITH THE LOWER SHOWING MORE WEAR.