# SDR UPS06447661

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 10, 2006
- Submitted: August 14, 2006
- Operation: Air carrier
- Aircraft: [N676UP](https://openairdocs.org/aircraft/N676UP), registered now
- Make and model: Boeing 747123F
- Aircraft serial: 20101
- Aircraft time: 83,907 hours, 23,132 cycles
- System (JASC): [5315 · Fuselage Main, Floor Beam](https://openairdocs.org/jasc/5315)
- Part: Floorbeam
- Condition: Corroded
- Location: Bs 520
- 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/UPS06447661

## Discrepancy

BS 520 LBL 33-47 FLOORBEAM FOUND CORROSION AS MARKED.  CORROSION BLEND OUT 0.051" BY 1.5" BY 2" EXCEED SRM 53-10-01 FIG 1 LIMITS, AND U/D BS 520 FLOORBEAM UPPER CHORD REPAIRED AS PER HX RS NR R53-25-35537 REFER NRC NR IB70247 FOR WORKING DETAIL AND REF UPS EO NR B747-5310-24843-A.

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