# SDR UPS03440836

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: May 18, 2003
- Submitted: June 11, 2003
- 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: 70,081 hours, 16,930 cycles
- System (JASC): [5320 · Fuselage Miscellaneous Structure](https://openairdocs.org/jasc/5320)
- Part: Floor Support
- Condition: Corroded
- Location: Cargo Bay
- 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/UPS03440836

## Discrepancy

INSPECTION TYPE: C,  BULK CARGO STA 1920-1980 LBL 8 FLOOR SUPPORT STRUCTURE UPPER AND LOWER SURFACE FOUND CORRODED.  CORROSION REMOVED AND REPROTECTED AS PER SRM 51-10-01& 51-10-02 & FLOOR SUPPORT REPAIRED AT BS 1920 TO 1950 LBL 8 AS PER SRM 53-10-07 FIG 20.  CORROSION BLEND OUT (0.020 INCH X 1 INCH X 8 FT).

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