# SDR UPS02439582

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: September 15, 2002
- Submitted: October 4, 2002
- Operation: Air carrier
- Aircraft: N683UP
- Make and model: Boeing 747121
- Aircraft serial: 20353
- Aircraft time: 81,157 hours, 20,074 cycles
- System (JASC): [5313 · Fuselage Main, Longeron/Stringer](https://openairdocs.org/jasc/5313)
- Part: Longeron
- 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/UPS02439582

## Discrepancy

DURING C CHECK,  LT BLG OVERWING LONGERON BS 1413 FOUND TWO CRACKS BOTH CRACKS THROUGH THICKNESS ONE CRACK IS 5.5 INCH INLENGTH ANOTHER ONE CRACK IS 3 INCH IN LENGTH .     BS 1413 LT OVERWING LONGERON ANGLE REPAIR CARRIED OUT AS PER HX RS  R-53-43-34909 AND RA  747-53-20114.

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