# SDR UPS06446496

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 12, 2006
- Submitted: March 24, 2006
- Operation: Air carrier
- Aircraft: N681UP
- Make and model: Boeing 747121
- Aircraft serial: 19661
- Aircraft time: 106,939 hours, 27,146 cycles
- System (JASC): [5320 · Fuselage Miscellaneous Structure](https://openairdocs.org/jasc/5320)
- Part: Stiffener
- Part number: 65B0794226
- Condition: Cracked
- Location: Bs 260-280
- 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/UPS06446496

## Discrepancy

INSPECTION TYPE:C LH SIDE NWW INTERNAL BTN BS 260 AND 280 CRACK FOUND AT WL150, WL160 OF THE STIFFENER RADIUS RESPECTIVITY, CRACK LENGTH 1/4".  NWW BS 260-280 WL150 AND WL160 INTERNAL STIFFENER REPLACED AS PER SRM 51-10-01 PG 9 AND INSTALLED AS PER SRM 51-30-02.

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