# SDR UPS00433944

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 14, 2000
- Submitted: October 12, 2000
- Operation: Air carrier
- Aircraft: [N691UP](https://openairdocs.org/aircraft/N691UP), registered now
- Make and model: Boeing 747121
- Aircraft serial: 19641
- Aircraft time: 95,273 hours, 22,812 cycles
- System (JASC): [5320 · Fuselage Miscellaneous Structure](https://openairdocs.org/jasc/5320)
- Part: Forging
- Condition: Corroded
- 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/UPS00433944

## Discrepancy

INSPECTION TYPE:C, CABIN WINDOW FORGING CORRODED AT BS 1560 TO BS 1580 LT.  FORGING REMOVED IAW SRM 51-30-02 AND CORROSION REMOVED IAW SRM 51-10-01.  DEPTH CORROSION REMOVED IS .009 IAW SRM 56-20-01.  FORGING REFITTED IAW SRM 51-30-02 AND QUERY NOTE 66/2000 WHICH IS TO OVERSIZE HOLES BY 1/64 AND PERFORM OPEN HOLE HFEC FOR CRACKS.  MIN EDGE MARGIN IS 1.5D REPAIR/ALTERATION AUTHORIZATION EFN 747-53-1130.

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