Service difficulty report · Intercostal · Boeing 7377H4

Difficulty date
July 6, 2023
Submitted
August 15, 2023
Operation
Air carrier
Aircraft
N229WN
Make and model
Boeing 7377H4
Aircraft serial
32498
Aircraft time
58,665 hours, 35,024 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 277-294 RBL 1 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: 0.890' 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 277-294 RBL 1 WL 208 IAW SRM 51-40-02;[03] RECEIVED; LOCATED AND DRILLED NEW INTERCOSTAL P/N 141A5410U3AAR. LOT #1534252-1. IAW SRM 51-40-05 AND DWG 141A5400 REV: -<BR>OK TO INSTALL;[04] VERIFIED CORRECTIVE ACTION STEPS 1-3.;[05] VERIFIED MEASUREMENT TABLE.;[06] VERIFIED COMPLETION OF CORRECTIVE ACTIONS 1-3.<BR>OK TO INSTALL INTERCOSTAL GIVEN;[07] INSTALLED NEW INTERCOSTAL BS 277-294 RBL 1 WL 208 P/N 141A5410U3AAR LOT#1534252-1 PO#928536/1 IAW SRM 51-40-02 AND DWG 141A5400 REV:-;[08] VERIFIED CORRECTIVE ACTION STEP 7.;[09] VERIFIED COMPLETION OF CORRECTIVE ACTIONS 7 AND MEASUREMENT TABLE.

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