Service difficulty report · Intercostal · Boeing 7377H4

Difficulty date
March 10, 2023
Submitted
April 18, 2023
Operation
Air carrier
Aircraft
N281WN
Make and model
Boeing 7377H4
Aircraft serial
36528
Aircraft time
51,516 hours, 31,045 cycles
Part
Intercostal
Condition
Cracked
Location
Zn 200 Fus Top
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

CRACKED INTERCOSTAL AT FWD CABIN BS312+5 RBL31 WL208.<[01] CRACKED INTERCOSTAL AT FWD CABIN BS312+5 RBL 31; WL 208.1 FOUND 100% OUT OF LIMITS IAW SRM 51-10-02;[02] REMOVED INTERCOSTAL FROM BS312-BS344 RBL 31 IAW SRM 51-40-02;[03] VERIFIED CORRECTIVE ACTION 1;[04] RECEIVED; LOCATED AND DRILLED NEW INTERCOSTAL <BR>P/N 141A5410-12 IAW SRM 51-40-05 AND DWG 141A5400<BR>OK TO INSTALL;[05] VERIFIED CORRECTIVE ACTION 4.<BR>OK TO INSTALL;[06] INSTALLED NEW INTERCOSTAL AT BS312+5 RBL 31 WL 208<BR>P/N 141A5410-12 IAW SRM 51-40-02-0G-0 AND DWG 141A5400;[07] VERIFIED CORRECTIVE ACTION STEP 1;[08] ALL STEPS COMPLETE

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