What was found
DURING INSP, THE NR 4 ENGINE INB CORE COWL HEATSHIELD WAS FOUND DAMAGED. REF TO FIG 1 & AMP; 2 FOR DETAILS. A REPAIR SRM 54-45-01, REPAIR 3 WILL BE PERFORMED BUT THERE IS NIL STOCK OF 321 CRES AMS5510 REPAIR DOUBLER WITH THICKNESS OF 0.005" (REQUIRED IAW SRM 54-45-01, REPAIR 3, TABLE 201) AND NIL STOCK OF RIVET GUN TO INSTALL CR2664-4-2 (REQUIRED IAW SRM 54-45-01, REPAIR 3, FIG 201). THE RIVET CR2664-4-2 IS ALSO NOT IN-STOCK. USE AISI 321 REPAIR DOUBLER WITH THICKNESS OF 0.025" IN-LIEU OF 0.005". B) INSTALL REPAIR RIVETS BACR15CE4M* IN-LIEU OF CR2664-4-2.)