# SDR SWAA2021020141488

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 13, 2021
- Submitted: February 1, 2021
- Operation: Air carrier
- Aircraft: [N8610A](https://openairdocs.org/aircraft/N8610A), registered now
- Make and model: Boeing 737-8H4
- Registry model: [Boeing 737-8H4](https://openairdocs.org/model/boeing-737-8h4) (OpenAirDocs)
- Aircraft serial: 36635
- Aircraft time: 27,927 hours, 12,263 cycles
- System (JASC): [5320 · Fuselage Miscellaneous Structure](https://openairdocs.org/jasc/5320)
- Part: Intercostal
- Part number: 141A56901
- Condition: Corroded
- Location: Fwd Cabin Floor
- 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/SWAA2021020141488

## Discrepancy

FORWARD CABIN FLOOR STRUCTURE; STA 305; LBL11; WL208; INTERCOSTAL FLOOR SUPPORT UPPER SURFACE; 2 EA SPOTS OF CORROSION; MRK'D IN RED.  REMOVED CORROSION AT FWD CABIN FLOOR STRUCTURE STA 305 LBL11 INTERCOSTAL FLOOR SUPPORT IAW B737 SRM 51-10-02-0G-0 AND 53-10-51-1A-1.  EVALUATED DAMAGE AS 100% MATERIAL LOSS DUE TO CORROSION INTERCOSTAL FLOOR SUPPORT IS OUT OF LIMITS IAW B737 SRM 53-10-15-1A-1. REMOVED AND REPLACED INTERCOSTAL IAW B737 SRM 51-40-02-0G-0 AND DWG 141A5600 REV PN 141A5690-1.

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