Service difficulty report · Stringer · Boeing 7377H4

Difficulty date
August 21, 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 25R AT BS 540 AT FWD CARGO COMPARTMENT ; 2021-384332 / ALONG THE CUT EDGE ON STRINGER PER B737 NDT PART 6 51-00-00 PRO[26] LATE ENTRY REMOVED FASTENER BTW STR 20R TO 26R AND SPLICE LOC. BTW STR 25R TO 26R STA 500C IAW B737-700 SRM-51-40-02; [27] CORRECTED STEP #26 <BR>LATE ENTRY REMOVED FASTENER BTW STR 20R TO 26R AND SPLICE LOC. BTW STR 25R TO 26R STA 500C IAW B737-700 SRM-51-40-02 AND PERFORMED VISUAL INSPECTION ON OPEN HOLE AND NOT FOUND MORE DAMAGE; [28] COMPLETED STEP 27; [29] OK TO INSTALL SHEAR TIE (2EA) LOCATED STA 500D BETWEEN STRINGER 25R TO STRINGER 26R AND STRINGER 24R TO STRINGER 25R ; TIE CLIP (2EA) LOCATED STA 520 STRINGER 25R AND STA 500D STRINGER 25R; WEB LOCATED STRINGER 25R BETWEEN STA 500D TO STA 520; FASTENERS BTW STR 20R TO 26R BS 500C AND SPLICE LOC. BTW STR 25R TO 26R STA 500C.; [30] OK TO INSTALL GRANTED IN STEP 29<BR>RII ACCOMPLISHED; [31] MADE AND DRILLED REPAIR PARTS: -2 CHANNEL AND -3 ANGLE (2E/A) LOC BTW BS 500C TO BS 500D STR 25R IAW B-737-700 SRM 53-00-03-2R-1 REPAIR 1; [32] CERTIFIED STEP 31 RII; [33] APPLIED PROTECTIVE TREATMENT ON REPAIR AREA AND REPAIR PARTS: -2 CHANNEL AND -3 A,NG,NRC,2021-09-14 15:37:23,22Y,Y,MX,0,0,,CRACK STRINGER 25R AT BS 540 AT FWD CARGO COMPARTMENT ; 2021-384332"

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