# SDR UPS03440551

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 13, 2003
- Submitted: April 30, 2003
- Operation: Air carrier
- Aircraft: N681UP
- Make and model: Boeing 747121
- Aircraft serial: 19661
- Aircraft time: 100,611 hours, 25,820 cycles
- System (JASC): [5313 · Fuselage Main, Longeron/Stringer](https://openairdocs.org/jasc/5313)
- Part: Stringer
- Condition: Cracked
- Location: Fuselage
- 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/UPS03440551

## Discrepancy

INSPECTION TYPE: C,   BS 1000 - 1020,  S6L STRINGER CRACKED.     BS 1000 S-6L STRINGER REPAIRED AS PER HX RS R53-21-35017 AND ENGINEERING FILE NUMBER ; 747-53-20138.

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