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
Part number
25RH
Condition
Cracked
Location
Fwd Cargo Bay
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 R/H STRINGER 25. ; / [01] CRACK ON STR 25R BS 540 FOUND TO BE OUT OF LIMITS IAW SRM 53-00-03-1A-1. CUT OUT DAMAGED STR SECTION FROM BS 500D+10 - BS 540 STR 25R IAW SRM 53-00-03-2R-1.; [02] PARTIAL UPDATE OF STEP 1-3; [03] VERIFIED SRM APPLICABILITY AND SEVERING OF DAMAGED STR AT BS500D+10 PER SRM 53-00-03-2R-1.; [04] RECEIVED REPAIR STRINGER SECTION FROM OSS FABRICATED FROM 7075 T0 .036 LOT# 1470354 HEAT TREATED TO T62 CONDITION ALL ON SWA PO 851661 DATED 13 JAN 22; RECEIVED REPAIR U CHANNEL FROM OSS FABRICATED FROM 7075 T0 .040 LOT# 1468510-2 HEAT TREATED TO T62 CONDITION ALL ON SWA PO 851668 DATED 13 JAN 22; RECEIVED REPAIR J CHANNELS FROM OSS FABRICATED FROM 7075 T0 .040 LOT# 1468510-2 HEAT TREATED TO T6 CONDITION ALL ON SWA PO 851665 DATED 13 JAN 22. ALL FOR STR REPAIR BS 540 STR 25 R/H>RECEIVED NEW STRINGER SECTION P.O.#852834; [08] REQUEST NDI- HFEC FOR OPEN HOLES; CUTOUT TRIM; AND COUNTERSINK; [09] HFEC INSPECTED OPEN HOLES IAW 737 NDTM PART 6 51-00-00 PROCEDURE 16; NO CRACKS NOTED. <BR>EQUIP USED: NORTEC 600 ID: ATS1465 EQUIP USED: MINIMITE ID: ATS240; [10] HFEC INSPECTED CUT OUT IAW 737 NDTM PART 6 51-00-00 PROCEDURE 23; NO CRACKS NOTED. EQUIP USED: NORTEC 600 ID: ATS1465; BEGAN INSTALLING STR 25R STR REPAIR PER ER 22-153-00042. SRM 53-00-03-REPAIR 1.STR25R/H BS540 WAS REPAIRED PER SWA EA # 22-153-00042