Service difficulty report · Intercostal · Boeing 7377H4

Difficulty date
September 24, 2022
Submitted
November 9, 2022
Operation
Air carrier
Aircraft
N201LV
Make and model
Boeing 7377H4
Aircraft serial
29854
Aircraft time
59,586 hours, 35,374 cycles
Part
Intercostal
Condition
Corroded
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

CORROSION ON INTERCOSTAL UPPER FLANGE AT STA 328+12; LBL 11; WL 208. / [01] CORROSION ON INTERCOSTAL UPPER FLANGE AT STA 328+12; LBL 11; WL 208 P/N 141A5410-17 AREA OT= 0.080''; RT=0.065'';X=0.015'';L=1.500'' WITH DEPTH GAGE ID:ATS2473<BR>S/N:UNKNOWN<BR>DATE:08/2022<BR>DUE:08/2023<BR>FOUND TO BE OUT LIMITS I.A.W SRM 53-10-51-0L-2 FOR IDENTIFICATION AND SRM 53-10-51-1A-1 FOR ALLOWABLE DAMAGE; IT WILL BE REPAIRABLE BY REPLACEMENT I.A.W SRM 51-10-02-0G PAR 9C .;[02] VERIFIED THE APPLICABILITY OF SRM 53-10-51-0L-2 FOR IDENTIFICATION AND SRM 53-10-51-1A-1 FOR ALLOWABLE DAMAGE .;[03] REMOVED DAMAGED INTERCOSTAL FROM BS 328 TO BS 344 LBL 11 WL 208 IAW SRM 51-40-02 . RECEIVED NEW INTERCOSTAL ; LOCATED AND DRILLED IAW SRM 51-40-05 AND DWG # 141A5400 ; OK TO INSTALL;[04] VERIFIED CORRECTIVE ACTION ITEM 1-3. OK TO INSTALL.;[05] INSTALLED NEW INTERCOSTAL BETWEEN BS 328 - BS 344 LBL 11 WL 208 IAW SRM 51-40-02 AND DWG # 141A5400;[06] VERIFIED CORRECTIVE ACTION #5.<BR>VERIFIED MEASUREMENTS.

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