Service difficulty report · Stringer · Boeing 737

Difficulty date
January 5, 2022
Submitted
April 26, 2022
Operation
Air carrier
Aircraft
N233LV
Make and model
Boeing 737
Aircraft serial
32501
Aircraft time
53,746 hours, 31,891 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

SUPPLEMENTAL INFORMATION: CRACK ON FWD CARGO BAY BS 540 L/H STRINGER 24. ; CRACK WAS FOND AT BS 540 LH STRINGER 26; NOT 24. / [01] UPDATED MEASUREMENT TABLE; [09] RECEIVED REPAIR STRINGER SECTION FABRICATED FROM 7075-T0 .045 LOT# 1451784 HEAT TREATED TO T6 CONDITION ALL ON SWA PO 851715 DATED 12 JAN 22 RECEIVED REPAIR HAT SECTION FABRICATED FROM 7075 T0 .050 LOT#1407037-1 HEAT TREATED TO T6 CONDITION ALL ON SWA PO 851717 DATED 12 JAN 22; [10] TRIMMED; LOCATED AND DRILLED NEW STRINGER REPAIR SECTION AND NEW HAT SECTION APPLIED CHEMICAL CONVERSION COAT TO REPAIR PARTS AND REPAIR AREA ALL IAW SRM 53-00-03-2R-1 FIG 205 AND SRM 51-40-05-0G-0 OK TO PRIME; [11] LOCATED AND DRILLED NEW STRINGER REPAIR SECTION AND NEW HAT SECTION APPLIED CHEMICAL CONVERSION COAT TO REPAIR PARTS AND REPAIR AREA ALL IAW SRM 53-00-03-2R-1 FIG 205 AND SRM 51-40-05-0G-0.<BR>VERIFIED OK TO PRIME.; [12] PRIMED REPAIR STRINGER; HAT SECTION AND REPAIR AREA FOR BS 540 STR 26 L/H IAW SRM 53-00-03-2R-1 STEP 4 J; 18] INSTALLED STRINGER26L AND STRINGER SPLICE FROM B/S 506 TO 540 IAW B737 SRM 51-40-02 AND SRM 53-00-03-2R-1 AND DWG 143A3230. COMPLETED INSTALLATION STEP 2 AND PARTIAL INSTALLED STEP 1.; [19] CORRECTED PARTIAL STEP 2 BY ADDING SRM 51-40-02;