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 S27l
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

STR27L IS CRACKED AT BS536 LBL15 WL150 ; / HFEC INSPECTED TRIMMED EDGE OF DAMAGE CUTOUT PER 737NDT PART 6 51-00-00 PROCEDURE 23. NO CRACKS FOUND.;LOCATED; DRILLED; DEBURRED STRINGER SECTION AND HAT SECTION PER SRM 53-00-03-2R-1 REPAIR 1; STEPS 4; D;E;F;G;H; FIG 205; APPLIED A CHEMICAL CONVERSION COATING PER SRM 53-00-03-2R-1; STEP 4;I.;PERFORMED GVI OF REPAIR AREA IAW SRM 53-00-03-2R-1; NO FAULTS NOTED; OK TO INSTALL REPAIR PARTS;RECEIVED STRINGER SECTION; P.O.#824533. RECEIVED HAT SECTION ; P.O.# 824534.;VERIFIED CARD COMPLETE;VERIFIED; INSTALLED REPAIR PARTS AT BS 500D+6' -540 STR-27R AND APPLIED SEALING AROUND REPAIR AREA AND CIC IAW SRM 53-00-03 REP.1;DWG 143A1215;143A3230.;CUTOUT STR SECTION BS 500D +11 - 538; STR 27 L PER SRM 53-00-03-2R-1;;INSTALLED REPAIR PARTS AT BS 500D+6' -540 STR-27R AND APPLIED SEALING AROUND REPAIR AREA AND CIC IAW SRM 53-00-03 REP.1;DWG 143A1215;143A3230.;PERFORMED GVI ON REPAIR AREA AND NO ADDITIONAL DAMAGED FOUND; APPLIED PRIMER ON REPAIR PARTS AND REPAIR AREA IAW SRM 53-00-03 REP.1. OK TO INSTALL.;REQUEST NDI TO HFEC CUT SECTION FOR CRACK FREE CONDITION PER SRM 53-00-03-2R-1 STEP 4;C.;UPDATED MEASUREMENTS;VERIFIED CUTOUT OF STR SECTION BS 500D +11 - 538; STR 27 L PER SRM 53-00-03-2R-1;VERIFIED LOCATE DRILLED; DEBURRED STRINGER SECTION AND HAT SECTION PER SRM 53-00-03-2R-1 REPAIR 1; STEPS 4; D;E;F;G;H; FIG 205; APPLIED A CHEMICAL CONVERSION COATING PER SRM 53-00-03-2R-1; STEP 4;I.

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