Service difficulty report · Intercostal · Boeing 7377H4

Difficulty date
July 25, 2023
Submitted
August 18, 2023
Operation
Air carrier
Aircraft
N292WN
Make and model
Boeing 7377H4
Aircraft serial
32538
Aircraft time
51,861 hours, 31,244 cycles
Part
Intercostal
Part number
UNKNOWN
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 BS 328-344 LBL 45 WL 208.<[01] VERIFIED APPLICABILITY FOR ALLOWABLE DAMAGE LIMITS IAW SRM 53-10-51-1A-1 ALLLOWABLE DAMAGE 1 AND IDENTIFICATION IAW SRM 53-10-51-01-2 IDENTIFICATION 2.<BR>EVALUATED CRACKED INTERCOSTAL L: 0.900' AND FOUND OUT ALLOWABLE DAMAGE LIMITS IAW SRM 53-10-51-1A-1 ALLLOWABLE DAMAGE 1 FIGURE 105 DETAIL A AND K. TOOL USED CALIPER ID: ATS2883 CAL DUE 04/024;[02] REMOVED INTERCOSTAL LOCATED AT BS 328-344 LBL 45 WL 208 IAW SRM 51-40-02;[03] RECEIVED; LOCATED AND DRILLED NEW INTERCOSTAL BS 328-344 LBL 45 WL 208 P/N 141A5410U16. LOT #1535380-1 PO#931623/1 IAW SRM 51-40-05 AND DWG 141A5400 REV: -<BR>OK TO INSTALL;[04] VERIFIED CORRECTIVE ACTION STEPS 1-3.;[05] INSTALLED NEW INTERCOSTAL BS 328-344 LBL 45WL 208 P/N 141A5410U16 LOT#1535380-1 PO#931623/1 IAW SRM 51-40-02 AND DWG 141A5400 REV:-;[06] VERIFIED CORRECTIVE ACTION STEP 5.;[07] VERIFIED COMPLETION OF CORRECTIVE ACTIONS 6 AND MEASUREMENT TABLE.

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