Service difficulty report · Stringer · Boeing 7377H4

Difficulty date
May 10, 2021
Submitted
June 17, 2021
Operation
Air carrier
Aircraft
N732SW
Make and model
Boeing 7377H4
Aircraft serial
27864
Aircraft time
74,727 hours, 43,976 cycles
Part
Stringer
Condition
Cracked
Location
Bs 536 S23r
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

STR23R IS CRACKED AT BS536 RBL45 WL162 ; / HFEC INSPECTED TRIMMED EDGE OF DAMAGE CUTOUT PER 737NDT PART 6 51-00-00 PROCEDURE 23. NO CRACKS FOUND.;PERFORMED GVI INSP; NO DEFECTS NOTED. VERIFIED PRIMER AND OK TO INSTALL PER SRM AND EA 21-153-01302.;RII FUNCTION;REPAIRED CRACK STRINGER AT STR-23R BS 536 PER SRM 53-00-03-2R-1 AND EA 21-153-01302;REFER TO EA 21-153-01302 SUMMARY REQUIREMENT; BARCODE: TTG8Q005E8R7.;VERIFIED;REPAIRED CRACK STRINGER AT STR-23R BS 536 PER SRM 53-00-03-2R-1 AND EA 21-153-01302;VERIFIED APPLICATION OF SEALANT AND CIC;VERIFIED CUTOUT OF STR SECTION BS 500D +10 - 538 STR 23R PER SRM SRM 53-00-03-2R-1.;VERIFIED NEW STRINGER SECTION AND SPLICE INSTALL PER SRM 53-00-03 REP 1 AND EA 21-153--01302.;APPLIED AT STR-23R BS 500D+6' -540 SEALING AROUND REPAIR AND CIC ON REPAIR AREA IAW SRM 53-00-03 REP.1 AND EA 21-153-01302 WIP2.;CORRECTIVE ACTIONS 6 & 7. REVIEWED R.O. 824531-SWA/ 824532-SWA. VERIFIED STRINGER SECTION / HAT CHANNEL PARTS FABRICATED; LOCATED AND DRILLED IAW 21-153-01302 AND SRM 53-00-23-2R-1 REPAIR 1.;CUTOUT STR SECTION BS 500D +10 - 538 STR 23R PER SRM SRM 53-00-03-2R-1.;FABRICATED REPAIR PARTS STR-23 SECTION AND HAT CHANNEL SECTION;LOCATED & DRILLED AND CHEMICAL CONVERSION COATING APPLIED IAW E/A 21-153-01302 AND SRM 53-00-03 REP.1;INSTALLED NEW STR-23 SECTION AND SPLICE AT BS 500D+6' - 540 IAW SRM 53-00-03 REP.1 AND EA 21-153-01302;PERFORMED GVI;

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