Service difficulty report · Stringer · Boeing 7377H4

Difficulty date
June 9, 2021
Submitted
July 15, 2021
Operation
Air carrier
Aircraft
N489WN
Make and model
Boeing 7377H4
Aircraft serial
33855
Aircraft time
54,253 hours, 32,244 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-25R WL155. MARKED ; / [01] REMOVED DAMAGED S25R SECTION AT BS 500D+10' - 540 AND GVI PERFORMED NO ADDITIONAL DAMAGED FOUND IAW SRM 53-00-03-2R-1;[05] HFEC INSPECTED OPEN HOLES IN REPAIR ARE EXCEPT FOR 1 HOLE COMMON TO S-25R AT BS 500D+13 NOTED ON FAULT TTG8Q005F2UA PER NDTM PART 6; 51-00-00 PROCEDURE 16. NO CRACKS NOTED.<BR>CAL ID: ATS1465 S/N: 60004150296 <BR>CAL ID: ATS1411 S/N: MM12030Z012384; [06] PERFORMED CLEANED AND INSPECTED BY HFEC ON HOLE AT S-25R AT BS 500D+13 NOTED ON FAULT TTG8Q005F2UA AND NO DAMAGED FOUND IAW SRM 51-10-02-0G-0 PAR 11 A (5).; [07] VERIFIED CLEANING AND HFEC INSPECTION OF HOLE AT S-25R AT BS 500D+13 NOTED ON FAULT;[08] RECEIVED STRINGER SECTION FROM OSS; VERIFIED FABRICATION PER DWG 143A3241 ON PO 827321-SWA; VERIFIED HEAT TREAT PER BAC5602 ON PO 827321-SWA; VERIFIED DYE PEN INSPECT PER SOPM 20-20-02 ON PO 827321-SWA. RECEIVED U-CHANNEL FROM OSS; VERIFIED FABRICATION PER SRM 53-00-03-2R-1 ON PO 827319-SWA; VERIFIED HEAT TREAT PER BAC5602 ON PO 827319-SWA; VERIFIED DYE PEN INSPECT PER SOPM 20-20-02 ON PO 827319-SWA. RECEIVED J-CHANNEL FROM OSS; VERIFIED FABRICATION PER EA 21-153-01634 AND SRM 53-00-03-2R-1 ON PO 827322-SWA; VERIFIED HEAT TREAT PER BAC5602 ON PO 827322-SWA; [13] OK TO INSTALL; [14] INSTALLED STRINGER AND ALL REPAIR PARTS AT AFT AREA AFT OF FCB BS500D+13 - BS540 STR25R WL155 IAW SRM 51-40-02-0G-0; DWG 143A3230 AND EA 21-153-01634;

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