# SDR SWAA2023020790465

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 10, 2023
- Submitted: February 7, 2023
- Operation: Air carrier
- Aircraft: [N209WN](https://openairdocs.org/aircraft/N209WN), registered now
- Make and model: Boeing 737-7H4
- Registry model: [Boeing 737-7H4](https://openairdocs.org/model/boeing-737-7h4) (OpenAirDocs)
- Aircraft serial: 32484
- Aircraft time: 59,684 hours, 35,490 cycles
- System (JASC): [5320 · Fuselage Miscellaneous Structure](https://openairdocs.org/jasc/5320)
- Part: Support
- Part number: NOTREPORTED
- Part serial: NOTREPORTED
- Condition: Corroded
- 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/SWAA2023020790465

## Discrepancy

CORROSION ON AFT CARGO BAY FLOOR TO SIDEWALL SUPPORT AT RBL 21 BS 727A+6; BS 727A+14; BS 727B+18; BS 727C+14; BS 727D+6; BS 727D+14; BS 727D+18; BS 727E.<[01] UPDATE STEP 1-8;[02] TABLE MEASUREMENT COMPLETE;[03] VERIFIED APPLICABILITY FOR ALLOWABLE DAMAGE LIMITS OF ACB FLOOR TO SIDEWALL SUPPORT RBL 21 WL 156 IAW SRM 53-00-53-1A-2 ALLOWABLE DAMAGE2;[04] VERIFIED CORRECTIVE ACTION STEPS 1;2 AND 3.;[05] GENERAL FAULT RESOLVED ON OTHER FAULT (FAULT WAS ON ANOTHER FAULT REF:TTG8Q00H67S4;[06] VERIFIED CORRECTIVE ACTION 5 AND THE MEASUREMENT TABLE.

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