# SDR EIA2005177

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: October 11, 2005
- Submitted: November 8, 2005
- Operation: Air carrier
- Aircraft: N486EV
- Make and model: Boeing 747 212B
- Registry model: [Boeing 747 212B](https://openairdocs.org/model/boeing-747-212b) (OpenAirDocs)
- Aircraft serial: 20888
- Aircraft time: 85,257 hours, 20,133 cycles
- System (JASC): [5315 · Fuselage Main, Floor Beam](https://openairdocs.org/jasc/5315)
- Part: Floorbeam
- Condition: Cracked
- Location: Bs 340
- Stage of operation: IN
- How discovered: E
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/EIA2005177

## Discrepancy

BS 340 FLOORBEAM UPPER CHORD HORIZONTAL AFT FLANGE RBL 45 FLOOR PANEL AFT HOLE CRACKED RUNNING FWD APPROX 0.040 INCH LONG.  DEFECTIVE FLOORBEAM UPPER CHORD REPAIRED AS PER SB 747-53A2431 FIG 9 (HORIZONTAL AFT FLANGE RBL45).

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