# SDR UIEA2021060101233

- 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: 92,184 hours
- System (JASC): [5315 · Fuselage Main, Floor Beam](https://openairdocs.org/jasc/5315)
- Part: Floorbeam
- Condition: Corroded
- Location: Bs 2260 Rbl11.33
- 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/UIEA2021060101233

## Discrepancy

CORROSION DAMAGE ON MAIN DECK FLOOR BEAM UPR CAP AT STA 2260 RBL 11.33(<P>REMOVE AFFECTED FASTENERS TO ACCESS IAW SRM 51-40-02 REV.91. </P><P>REPAIR DAMAGE AREA IAW 53-00-51-2R-3 REPAIR 3 REV.91</P><P>INSTALL FASTENERS IAW SRM 51-40-02 REV.91 AND DMG # 65B63533 SH2 REV.A; 65B38113 SH15 REV.A; 65B38113 SH16 REV.C; 65B38251 SH.62 REV.A; 65B38253 SH.1 REV.AP; 65B38251 SH.74 REV.A AND EI # T2021A53M-1459 REV.1</P><P>COND CK NORMAL</P>)

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