Service difficulty report · Stringer · Boeing 7377H4

Difficulty date
July 18, 2023
Submitted
August 7, 2023
Operation
Air carrier
Aircraft
N415WN
Make and model
Boeing 7377H4
Aircraft serial
29836
Aircraft time
71,392 hours, 42,326 cycles
Part
Stringer
Part number
UNKNOWN
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

AFT AREA OF FOWARD CARGO BS540 STR 23R CRACKED<[01] VERIFIED APPLICABILITY SRM 53-00-03-2R-1<BR>CUT AND REMOVED THE DAMAGED AREA ON STRINGER 23R BS 540 PER SRM 53-00-03-2R-1 CUT AREA ON BS 513;[02] VERIFIED CORRECTIVE ACTION 1;[03] REQUEST HFEC EDDY CURRENT INSPECTION OF THE REPAIR AREA TO MAKE SURE THAT ALL OF THE DAMAGE IS REMOVED;[04] HFEC INSPECTED REPAIR AREA IAW 737 NDTM PART 6; 51-00-00 PROCEDURE 23.<BR>NO CRACKS NOTED.<BR>EQUIP USED:<BR>-NORTEC 600 ID: ATS1465 CAL DUE: 09/23;[05] RECIVED NEW STRINGER SECTION FROM OSS ITEM HFAB53-STR-010 CUSTOMER RO NO 929664-SWA AND HAT SECTION ITEM HFAB53-HC-011 CUSTOMER RO NO 929725-SWA<BR>LOCATED AND DRILLED STRINGER SECTION AND HAT SECTION ON AFT AREA OF FWD CARGO BS 540 STR 23R PER SRM 53-00-03-2R-1.<BR>APLIED CHEMICAL CONVERSION COATING ON STRINGER SECTION AND HAT SECTION OK TO APPLY PRIMER;[06] VERIFIED CORRECTION ACTION ITEM 5.;[07] APPLIED PRIMED ON STRINGER SECTION AND HAT SECTION PER SRM 53-00-03-2R-1 <BR>OK TO INSTALL REPAIR PARTS;[08] VERIFIED CORRECTION ACTION ITEM 7. OK TO INSTALL GIVEN.;[09] INSTALLED ALL REPAIR PARTS PER SRM 53-00-03-2R-1 .;[10] INSTALLED ALL REPAIR PARTS PER SRM 53-00-03-2R-1 PART 4.K FIGURE 205.;[11] VERIFIED CORRECTIVE ACTION 10.;[12] UPDATE STEP 2.;[13] VERIFIED STEP 2 COMPLETE.;[14] THE DAMAGE WAS REPAIRED PER 737-700 SRM 53-00-03-2R-1 (REPAIR 1) AND EA 23-153-02257;[15] VERIFIED CORRECTIVE ACTION #14 AND MEASUREMENT TABLE;[16] VERIFIED TASK COMPLETE

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