# SDR UIEA2023030900230

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 8, 2023
- Submitted: March 10, 2023
- Operation: Air carrier
- Aircraft: [N476MC](https://openairdocs.org/aircraft/N476MC), registered now
- Make and model: Boeing 747-47UF
- Registry model: [Boeing 747-47UF](https://openairdocs.org/model/boeing-747-47uf) (OpenAirDocs)
- Aircraft serial: 29256
- Aircraft time: 93,201 hours, 17,179 cycles
- System (JASC): [5300 · Fuselage Structure (General)](https://openairdocs.org/jasc/5300)
- Part: Stiffener
- Part number: 65B0182821
- Part serial: NSN
- Condition: None
- Stage of operation: IN
- How discovered: V
- Nature of condition: O
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/UIEA2023030900230

## Discrepancy

CORROSION ON LWR FUSELAGE KEEL BEAM STIFFENER AT STA 1000 WL 90 LBL9(<P>1. REMOVE DAMAGE PARTS IAW SRM 51-40-02-OG-0 REV96 2. INSTALL NEW PARTS IAW SRM 51-40-02-0G-0 REV96 AND DWG NO: 65B01828 SH34 REV-A AND DWG NO: 65B01828 SH44 REV-C 3. JOB COMPLETED AND COND CHK NML</P>)

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