# SDR UIEA2021060101232

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: May 29, 2021
- Submitted: June 2, 2021
- Operation: Air carrier
- Aircraft: [N493MC](https://openairdocs.org/aircraft/N493MC), registered now
- Make and model: Boeing 747-47UF
- Registry model: [Boeing 747-47UF](https://openairdocs.org/model/boeing-747-47uf) (OpenAirDocs)
- Aircraft serial: 29254
- Aircraft time: 92,141 hours, 14,942 cycles
- System (JASC): [5315 · Fuselage Main, Floor Beam](https://openairdocs.org/jasc/5315)
- Part: Floorbeam
- Condition: Corroded
- Location: Bs 2280 Lbl 70
- Stage of operation: IN
- How discovered: V
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/UIEA2021060101232

## Discrepancy

CORROSION ON FLOOR BEAM UPR CAP AT STA 2280. LBL 70(<P>REMOVE AFFECTED FASTENERS TO ACCESS IAW SRM 51-40-02 REV.91</P><P>REPAIRED DAMAGED AREA IAW SRM 53-00-51-2R-3 REPAIR3 REV.91 AND EI NO T2021A53M-1422 REV.2</P><P>INSTALL FASTENERS IAW SRM 51-40-02 REV.91 AND DWG NO 65B38694 SH3 REV.C J65B04051 SH 45 REV.A</P><P>COND CHK NORMAL.</P>)

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