# SDR SWAA2023031301718

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: February 10, 2023
- Submitted: March 13, 2023
- Operation: Air carrier
- Aircraft: [N277WN](https://openairdocs.org/aircraft/N277WN), registered now
- Make and model: Boeing 737-7H4
- Registry model: [Boeing 737-7H4](https://openairdocs.org/model/boeing-737-7h4) (OpenAirDocs)
- Aircraft serial: 32531
- Aircraft time: 51,901 hours, 31,206 cycles
- System (JASC): [5320 · Fuselage Miscellaneous Structure](https://openairdocs.org/jasc/5320)
- Part: Strap
- Condition: Corroded
- Location: Zn 200 Fus Top
- 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/SWAA2023031301718

## Discrepancy

MAIN CABIN AFT WET AREA FLOOR STRAP CORROSION AT RBL 18' STA 1060+10' MAIN CABIN AFT WET AREA FLOOR STRAP CORROSION AT RBL 18' STA 1006 + 10'<[01] FOUND EXFOLIATING CORROSION TO BE OUT OF LIMITS REF SRM 51-70-15-1A-1. PART NEEDS REPLACEMENT.;[02] REMOVED MAIN CABIN AFT WET AREA FLOOR STRAP AT RBL 18'' STA 1060 + 10' REF SRM 51-40-02-0G-0;[03] REMOVED MAIN CABIN AFT WET AREA FLOOR STRAP AT RBL 18'' STA 1006 + 10' REF SRM 51-40-02-0G-0;[04] LOCATED; DRILLED AND COUNTERZUNK HOLES AT AFT WET AREA NEW STRAP AT RBL 18' BETWEEN STA 1006 + 10' REF 51-40-05-0G-0;[05] CORRECTION TO STEP 2 AND 3: REMOVED MAIN CABIN AFT WET AREA FLOOR STRAP AT RBL 18'' STA 1006 + 10' REF SRM 51-40-02-0G-0;[06] VERIFIED STEP 1;4 AND 5. OK TO INSTALL FLOOR STRAP AT RBL 18 AND BETWEEN STA 1006+10.;[07] INSTALLED MAIN CABIN AFT WET AREA FLOOR STRAP AT RBL 18'' STA 1006 + 10' REF SRM 51-40-02-0G-0 AND DWG 147A5730;[08] VERIFIED AND INSPECTED STEP #7. FINAL.;[09] VERIFIED.

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