# SDR SWAA2023070554486

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: May 31, 2023
- Submitted: July 5, 2023
- Operation: Air carrier
- Aircraft: [N962WN](https://openairdocs.org/aircraft/N962WN), registered now
- Make and model: Boeing 737-7H4
- Registry model: [Boeing 737-7H4](https://openairdocs.org/model/boeing-737-7h4) (OpenAirDocs)
- Aircraft serial: 36963
- Aircraft time: 38,452 hours, 23,554 cycles
- System (JASC): [5320 · Fuselage Miscellaneous Structure](https://openairdocs.org/jasc/5320)
- Part: Intercostal
- Part number: UNKNOWN
- Condition: Cracked
- Location: Zn 100 Fus Lower
- Stage of operation: IN
- How discovered: 9
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/SWAA2023070554486

## Discrepancy

CRACKED INTERCOSTAL AT FWD CABIN BS344+5 RBL50 WL208.<[01] VERIFIED APPLICABILITY OF SRM 53-10-51-1A-1 ALLOWABLE DAMAGE 1 - SECTION 41 FLOOR STRUCTURE;[02] ACCOMPLISHED EVALUATION ON INTERCOSTAL AT FWD CABIN STA-344+5'' RBL50 WL208 AND FOUND TO BE OUT OF LIMITS IAW SRM 53-10-51-1A-1 PART 4.E FIG.105. <BR>TOOL USED CALIPER ID: ATS2739 S/N: A22004232 DUE DATE:11/2023.;[03] REMOVED INTERCOSTAL IAW SRM 51-40-02-0G-0;[04] LOCATED AND DRILLED NEW INTERCOSTAL IAW SRM 51-40-05-0G-0 AND DWG#141A5400.<BR>OK TO INSTALL.;[05] VERIFIED CORRECTIVE ACTION 4 'LOCATED AND DRILLED NEW INTERCOSTAL IAW SRM 51-40-05-0G-0 AND DWG#141A5400.' <BR>OK TO INSTALL NOT GIVEN DUE TO END OF SHIFT.;[06] UPDATED STEP 1;[07] REQUEST OK TO INSTALL PART;[08] OK TO INSTALL PART;[09] INSTALLED INTERCOSTAL AT FLOOR STRUCTURE BS 344- BS 360 RBL 50 WL 208 PER SRM 51-40-02-0G-0 AND DWG 141A5400;[10] VERIFIED CORRECTIVE ACTION #9;[11] THE TASK CANNOT BE COMPLETED BECAUSE THERE IS AT LEAST ONE PART INSTALLATION THAT HAS NOT BEEN COMPLETED.;[12] UPDATE SELECT PART;[13] VERIFIED STEP 1 COMPLETE; CARD COMPLETE.

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