# SDR UPS02439485

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: September 9, 2002
- Submitted: September 18, 2002
- Operation: Air carrier
- Aircraft: N683UP
- Make and model: Boeing 747121
- Aircraft serial: 20353
- Aircraft time: 81,157 hours, 20,074 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/UPS02439485

## Discrepancy

INSPECTION TYPE:C M/D BS 320 BL 0 - RBL 1 FLOORBEAM LOWER CHORD CRACKED.  FLOORBEAM LOWER CHORD CRACKED AREA REPAIRED AS PER SRM 51-40-04 FIG 2.

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