# SDR SWAA2021091599387

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 28, 2021
- Submitted: September 15, 2021
- Operation: Air carrier
- Aircraft: [N447WN](https://openairdocs.org/aircraft/N447WN), registered now
- Make and model: Boeing 737-7H4
- Registry model: [Boeing 737-7H4](https://openairdocs.org/model/boeing-737-7h4) (OpenAirDocs)
- Aircraft serial: 33720
- Aircraft time: 58,733 hours, 34,620 cycles
- System (JASC): [5320 · Fuselage Miscellaneous Structure](https://openairdocs.org/jasc/5320)
- Part: Intercostal
- Condition: Cracked
- Location: Bs 277-294
- 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/SWAA2021091599387

## Discrepancy

CRACKED INTERCOSTAL AT B.S. 277-294.5; RBL 1; WL 208.1. ; / [01] REMOVED INTERCOSTAL LOCATED BTW BS.277-294.5 RBL 1 WL 208.1 IAW SRM 53-00-04-1A-1 ALLOWABLE DAMAGE 1 THE LOCATION OF THE DAMAGED IS NOT CONTEMPLATED IN THE SRM. INTERCOSTAL MUST BE REPAIRED BY REPLACEMENT PER SRM 51-10-02 ITEM 9.C.; [02] RECEIVED INTERCOSTAL WITH P/N 141A5410-12. LOCATED AND DRILLED IAW SRM 51-40-05 DWG#141A5400. OK TO INSTALL.; [03] VERIFIED CORRECTIVE ACTION #2<BR>OK TO INSTALL.; [04] INSTALLED NEW INTERCOSTAL BTW BS 277-294.5 RBL 1 ; WL 208.1 IAW SRM 51-10-02; SRM 51-40-02; DWG#141A5400. ALL REQUIRE MAINTENANCE ACTIONS ARE COMPLETE REQUEST FINAL BUYOFF.; [05] RII INSPECTED GOOD INSTALLATION OF NEW INTERCOSTAL PER SRM 51-40-02 AND DWG 141A5400.; [06] VERIFIED; CONFIRMED JOB COMPLETE

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