# SDR UPS01435585

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 8, 2001
- Submitted: April 16, 2001
- Operation: Air carrier
- Aircraft: N672UP
- Make and model: Boeing 747123F
- Aircraft serial: 20324
- Aircraft time: 64,819 hours, 19,473 cycles
- System (JASC): [5313 · Fuselage Main, Longeron/Stringer](https://openairdocs.org/jasc/5313)
- Part: Longeron
- 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/UPS01435585

## Discrepancy

INSPECTION TYPE: C,  LT MLG WW. CORROSION ON TOP CHORD OF LT OVERWING LONGERON A T BS 1241     LONGERON REPAIRED IAW DRAWING NO. 144U3542

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