Service difficulty report · Stringer · Boeing 7377H4

Difficulty date
August 22, 2021
Submitted
September 21, 2021
Operation
Air carrier
Aircraft
N758SW
Make and model
Boeing 7377H4
Aircraft serial
27873
Aircraft time
74,045 hours, 43,671 cycles
Part
Stringer
Condition
Cracked
Location
Fuselage
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

CRACK STRINGER 26R AT LEVEL BS 540 AT FWD CARGO COMPARTMENT ; 2021-384401 / [23] INSTALLED REPAIR PARTS: -7 STRINGER SECTION; -2 CHANNEL; -3 ANGLE (2E/A) LOC BTW BS 500D TO BS 540 STR 26R AND TIE CLIP LOC BS 540 STR 26R IAW B737-700 SRM SRM 53-00-03-2R-1 REPAIR 1 DWG. 143A3230 REV. A; [24] CORRECTED STEP 23 <BR>INSTALLED REPAIR PARTS: -7 STRINGER SECTION; -2 CHANNEL; -3 ANGLE (2E/A) LOC BTW BS 500D TO BS 540 STR 26R AND TIE CLIP LOC BS 520 STR 26R IAW B737-700 SRM SRM 53-00-03-2R-1 REPAIR 1 DWG. 143A3230 REV. A; [25] RII; STEP 24 COMPLETED.; [26] OBTAINED OK TO INSTALL SHEAR TIE AND FASTENERS LOC BS 520 BTW STR 25R AND STR 26R; [27] RII; STEP 26 COMPLETED. <BR>OK2INS GRANTED.; [28] INSTALLED SHEAR TIE AND FASTENERS LOC BS 520 BTW STR 25R AND STR 26R IAW B737-700 SRM 51-40-02 DWG # 143A3230 REV. A; [29] STEP 28 COMPLETED AS RII.; [30] PERFORMED REPAIR LOCATED BTW BS 500D + 10 TO BS 540 STR 26R IAW B737-700 SRM SRM 53-00-03-2R-1 REPAIR 1 DWG. 143A3230 REV. A; [31] CORRECTED STEP 30 PERFORMED REPAIR LOCATED BTW BS 500D + 10 TO BS 540 STR 26R IAW B737-700 SRM SRM 53-00-03-2R-1 REPAIR 1 DWG. 143A3230 REV. A. MEASURED OF<BR>CRACK IS 0.482 TOOL USED CALIPER P/N 2340A1,NG,NRC,2021-09-14 15:43:37,22Y,Y,MX,0,0,,CRACK STRINGER 26R AT LEVEL BS 540 AT FWD CARGO COMPARTMENT ; 2021-384401"

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