Service difficulty report · Stringer · Boeing 7377H4

Difficulty date
June 1, 2023
Submitted
June 29, 2023
Operation
Air carrier
Aircraft
N295WN
Make and model
Boeing 7377H4
Aircraft serial
32541
Aircraft time
51,370 hours, 30,880 cycles
Part
Stringer
Part number
UNKNOWN
Condition
Cracked
Location
Zn 100 Fus Lower
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

STRINGER S-24L IS CRACKED AT STA 540.<[01] CRACK FOUND OUT OF LIMITS ON STRINGER S-24L BS 535 SKIN ATTACHMENT FLANGE 100% OF MATERIAL THICKNESS L=0.5' IAW SRM 53-00-03-1A-1;[02] VERIFIED APPLICABILITY OF SRM 53-00-03-2R-1 REP.1. FOR STRINGER S-24L BS 535 SKIN ATTACHMENT FLANGE.;[03] REMOVED DAMAGED SECTION OF STRINGER S-24L BS 500D+10' - BS 535 IAW SRM 53-00-03-2R-1 REP.1 PAR 4 A-B.;[04] PERFORMED A GVI ON REPAIR AREA OF STRINGER S-24L BS 500D+10' - BS 535 AND NOT FOUND ADDITIONAL DAMAGE IAW SRM 53-00-03-2R-1 REP.1 PAR 4 B.;[05] VERIFIED ITEM 4 CORRECTIVE ACTIONS.;[06] VERIFIED ITEM 3 CORRECTIVE ACTIONS.;[07] VERIFIED ITEM 2 CORRECTIVE ACTIONS.;[08] REQUIRED NDI INSPECTION HFEC FREE CRACK CUT OUT IAW SRM 53-00-03-2R-1 REP.1 PAR 4 C.;[09] ACCOMPLISHED HFEC SURFACE SCAN OF CUT EDGE IAW 737 NDTM PART 6 CHAPTER 51-00-00 PROCEDURE 23. NO CRACKS NOTED.<BR><BR>EQUIPMENT USED: NORTEC 600 ID: ATS1465 CAL DUE: 09/2023;[10] RECEIVED PARTS NEW STRINGER SECTION OF STR-24L RO. 922490-SWA-3 AND SPLICE SECTION RO. 922490-SWA-1 IAW SRM 53-00-03-2R-1 REP.1 PAR 4 D.

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