# SDR UPS02437664

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 24, 2002
- Submitted: February 18, 2002
- Operation: Air carrier
- Aircraft: [N673UP](https://openairdocs.org/aircraft/N673UP), registered now
- Make and model: Boeing 747123
- Aircraft serial: 20325
- Aircraft time: 68,011 hours, 20,052 cycles
- System (JASC): [5720 · Wing Miscellaneous Structure](https://openairdocs.org/jasc/5720)
- Part: Stiffener
- Part number: 65B01020375
- Condition: Cracked
- Location: Lt Wing
- 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/UPS02437664

## Discrepancy

INSPECTION TYPE:C L/W - L/E CAVITY FRONT SPAR 1 EA VERTICAL STIFFENER FOUND CRACKED AT LOWER END ABOUT 2 INCHES AT WS 382 JUST BEHIND NR 13 K/FLAP.  STIFFENER IS REPAIRED AS PER HAECO RS R-57-21-34726.

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