# SDR SWAA2022053100110

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 27, 2022
- Submitted: May 31, 2022
- Operation: Air carrier
- Aircraft: [N479WN](https://openairdocs.org/aircraft/N479WN), registered now
- Make and model: Boeing 737-7H4
- Registry model: [Boeing 737-7H4](https://openairdocs.org/model/boeing-737-7h4) (OpenAirDocs)
- Aircraft serial: 33990
- Aircraft time: 59,976 hours, 35,850 cycles
- System (JASC): [5320 · Fuselage Miscellaneous Structure](https://openairdocs.org/jasc/5320)
- Part: Intercostal
- Part number: 141A56901
- Condition: Corroded
- 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/SWAA2022053100110

## Discrepancy

INTERCOSTAL HAS CORROSION BETWEEN STA 294.50 TO STA 312;LBL12. CORRECT LBL 11.16. REMOVED CORROSION AT INTERCOSTAL BETWEEN STA 294.50 TO STA 312 LBL12. WL 208 IN REF B737-700 SRM 51-10-02-0G-0.REMOVED INTERCOASTAL BETWEEN STA 294.5 TO STA 312; LBL 12 IN REF WITH B737-700 SRM 51-40-02-0G-0. LOCATED AND DRILLED INTERCOSTAL BETWEEN FS 294.50 TO FS 312 LBL 12 WL 208.1 IN REF B737-700 SRM 51-40-05-0G-0;ORIGINAL MAT. 0.070'; MATERIAL REMOVED 0.031'; MAT. REMAINING 0.039'; FOUND OUT OF LIMITS REF. B737-7 SRM 53-10-51-1A-1 ALLOWABLE DAMAGE 1; REMOVED AND REPLACED INTERCOSTAL BETWEEN STA.294.5 TO STA.312; LBL11.16; REF. B737-7 SRM 51-40-02-0G-0 AND DRW #141A5600;

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