Service difficulty report · Intercostal · Boeing 73776N

Difficulty date
February 6, 2023
Submitted
March 6, 2023
Operation
Air carrier
Aircraft
N7885A
Make and model
Boeing 73776N
Aircraft serial
33379
Aircraft time
62,518 hours, 31,343 cycles
Part
Intercostal
Condition
Cracked
Location
Zn 100 Fus Lower
Stage of operation
IN
How discovered
9
Nature of condition
O
Precautionary procedure
K

As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.

What was found

INTERCOSTAL IN AFT CARGO BAY BS 927-947 RBL 21 UNDER R/H FLOOR TO SIDEWALL SUPPORT IS CRACKED<[01] CRACKED ON INTERCOSTAL IN AFT CARGO BAY BS 927-947 RBL 21 WITH NEXT DIMENSION L=0.850 TOOL USED ID: ATS1317; S/N: UNKNOWN; DATE:08/2022; DUE: 08/2023 FOUND TO BE OUT LIMITS I.A.W SRM 53-70-53-0L-2 FOR IDENTIFICATION AND SRM 53-00-53-1A-2 FOR ALLOWABLE DAMAGE IT WILL BE REPAIRABLE BY REPLACEMENT I.A.W SRM 51-10-02-0G PAR 9C .;[02] VERIFIED CORRECTIVE ACTION #1.;[03] RECEIVED NEW INTERCOSTAL P/N 147A7580-63. LOCATED AND DRILLED IAW SRM 51-40-05 AND DWG 147A7500<BR>OK TO INSTALL;[04] VERIFIED CORRECTIVE ACTION ITEM 3.<BR>OKAY TO INSTALL NEW INTERCOSTAL.;[05] INSTALLED ON AFT CARGO BAY NEW INTERCOSTAL BS 927 TO BS 947 RBL 21 IAW SRM 51-40-02 AND DWG 147A7500;[06] VERIFIED CORRECTIVE ACTION 5;[07] VERIFIED MEASUREMENT TABLE. WORKSCOPE COMPLETE

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