# SDR UPS97422026

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: February 2, 1997
- Submitted: March 26, 2000
- Operation: Air carrier
- Aircraft: [N671UP](https://openairdocs.org/aircraft/N671UP), registered now
- Make and model: Boeing 747123
- Aircraft serial: 20323
- System (JASC): [5315 · Fuselage Main, Floor Beam](https://openairdocs.org/jasc/5315)
- Part: Floorbeam
- Condition: Corroded
- Location: Bs 1580
- Stage of operation: IN
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/UPS97422026

## Discrepancy

INSPECTION TYPE-C, MAIN DECK FLOOR STRUCTURE: FLOORBEAM UPPER CHORD BS 1580 IS CORRODED ON  LOWER SIDE OF FLANGE AT LBL 70.  CORROSION FOUND TO BE BEYOND LIMITS OF SRM 53-10-01.  FLOORBEAM UPPER CHORD BS 1580 LBL 0 TO OUTBOARD REPLACED ACC TO SRM 51-30-02.

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