Service difficulty report · Stringer · Boeing 737*

Difficulty date
October 5, 2021
Submitted
November 11, 2021
Operation
Air carrier
Aircraft
N788SA
Make and model
Boeing 737*
Aircraft serial
30603
Aircraft time
68,361 hours, 40,407 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

CRACKED STRINGER AT AREA AFT OF FCB BS540 S-26R WL153. MARKED ; / [01] PERFORMED CUT OUT STRINGER 26R FCB AT BS 500D+ 10 TO BS 540 WL 153 IAW SRM 53-00-03-2R-1; [02] VERIFIED PERFORMED CUT OUT STRINGER 26R FCB AT BS 500D+ 10 TO BS 540 WL 153 IAW SRM 53-00-03-2R-1; [03] REQ HFEC CUT OUT FOR FREE CRACK CONDITION STR 26R FCB AT BS 500D+10 IAW SRM 53-00-03-2R-1; [04] HFEC INSPECTED IAW B737 NDTM P6; 51-00-00 PROC 23. NO CRACKS FOUND. TOOL ID IS000450; N500; [05] RECEIVED REPLACEMENT STRINGER SECTION FROM OSS TO HT T62 AND PENETRANT INSPECTED ON CUSTOMER # 840677-SWA IAW SRM 53-00-03-2R-1 REPAIR 1; [06] FABRICATED REPLACEMENT STRINGER SECTION FROM ITEM 5 ABOVE AND HAT SECTION SPLICE FROM PN# BAC1498-132#7075T62 CLAD LOT# 1454946-1. TREATED REAIR PARTS IAW SRM 53-00-03-2R-1 REPAIR 1... OK TO PRIME REPAIR PARTS AND REWORKED AREA; [07] VERIFIED CORRECTIVE ACTIONS 5 AND 6.; [08] PRIMED REPAIR PARTS AND REWORKED AREA IAW SRM 53-00-03-2R-1 REPAIR 1.... OK TO INSTALL; [09] VERIFIED ITEM 8 CORRECTIVE ACTIONS. OK TO INSTALL.; [10] INSTALLED REPAIR PARTS IAW SRM 53-00-03-2R-1 REPAIR 1; [11] REMOVED STRINGER CLIP AT BS 520 STR 26R IAW SRM 51-40-02; [12] INSTALLED STRINGER CLIP AT BS 520 STR26R IAW SRM 51-40-02; [13] VERIFIED CORRECTIVE ACTIONS 10-12