# SDR UPS00431750

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 5, 2000
- Submitted: March 26, 2000
- Operation: Air carrier
- Aircraft: N674UP
- Make and model: Boeing 747123
- Aircraft serial: 20100
- System (JASC): [5330 · Fuselage Main, Plate/Skin](https://openairdocs.org/jasc/5330)
- Part: Window Belt
- Part number: 65B04114
- Condition: Corroded
- Location: Bs 920 - 940
- 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/UPS00431750

## Discrepancy

INSPECTION TYPE:C 44, WINDOW FORGING STA 920 - 940 LHS HAS EVIDENCE OF CORROSION BETWEEN FORGING AND OUTER SKIN.  REMOVE FORGING TO INVESTIGATE.  REFERENCE QUERY NOTE 4/2000 FOR REPAIR INSTRUCTIONS REF EFN 747-53-1 093.

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