# SDR UPS06446899

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: May 9, 2006
- Submitted: May 19, 2006
- Operation: Air carrier
- Aircraft: N521UP
- Make and model: Boeing 747-200
- Registry model: [Boeing 747-200](https://openairdocs.org/model/boeing-747-200) (OpenAirDocs)
- Aircraft serial: 21944
- Aircraft time: 77,205 hours, 18,330 cycles
- System (JASC): [5315 · Fuselage Main, Floor Beam](https://openairdocs.org/jasc/5315)
- Part: Floorbeam
- Condition: Cracked
- Location: Fuselage
- 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/UPS06446899

## Discrepancy

INSPECTION TYPE:C U/D BS 360 FLOORBEAM UPPER CHORD AFT FLANGE AT RBL 43 FOUND 1EA FLOOR PANEL ATT HOLE CRACK RUNNING FWD .0626 INCH LONG.  CRACK LENGTH .0625 INCH.  U/D BS 360 FLOORBEAM UPPER CHORD AFT FLANGE AT RBL43 REPAIRED AS PER EO B747-5320-12407 APP D PLAN C FIG 3.

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