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 S23l
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

STR23L IS CRACKED AT BS536 LBL45 WL162 ; / HFEC INSPECTED TRIMMED EDGE OF DAMAGE CUTOUT PER 737NDT PART 6 51-00-00 PROCEDURE 23. NO CRACKS FOUND.;LOCATED AND DRILLED STRINGER AND HAT SECTION AT STR23L FROM BS500D+10 - BS540 IAW SRM 53-00-03-2R-1 PARA 4 STEPS (A-I) AND EA 21-153-01297;PERFORMED GVI OF REPAIR AREA IAW SRM 53-00-03-2R-1; NO ADDITIONAL FAULTS RAISED; OK TO INSTALL REPAIR PARTS;RII FUNCTION; VERIFIED ACCOMPLISHED STRINGER REPAIR STR23L AT BS 536 PER EA 21-153-01297 AND SRM 53-00-03-2R-1;RECEIVED STRINGER SECTION AND HAT SECTION FROM O.S.S; VERIFIED HEAT TREATED TO T6 CONDITION PER BAC5602 AND DYE PEN PER SOPM 20-20-02 ON PO# 824520-SWA;REFER TO EA 21-153-01297 SUMMARY REQUIREMENT; BARCODE: TTG8Q005DY9K.;REQUEST NDI FOR HFEC AT CUTOUT FOR CRACK FREE CONDITION PER SRM 53-00-03-2R-1.;VERIFIED ACCOMPLISHED STRINGER REPAIR STR23L AT BS 536 PER EA 21-153-01297 AND SRM 53-00-03-2R-1;VERIFIED (RII) INSTALLATION OF REPAIR PARTS AT BS 500D -540 STR-23L AND APPLICATION OF SEALANT AROUND REPAIR AREA IAW SRM 53-00-03 REP.1; DWG 143A1215; DWG 143A3230 & EA 21-153-01297 WIP2<BR><BR>VERIFIED APPLICATION OF CIC ON REPAIR AREA IAW SRM 53-00-03 REPAIR 1 AND EA 21-153-01297 WIP2;VERIFIED APPLICATION OF CIC;VERIFIED COMPLETION OF WORK IAW SRM 53-00-03-REPAIR 1 AND EA 21-153-01297 WIP1 AND -WIP2;VERIFIED CUTOUT STRINGER SECTION BS 500D +10; STR 23L PER SRM 53-00-03-2R-1.

More about the Boeing 737-7H4