# SDR UIEA2025070600843

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 12, 2025
- Submitted: July 14, 2025
- Operation: Air carrier
- Aircraft: [N445MC](https://openairdocs.org/aircraft/N445MC), registered now
- Make and model: Boeing 747-4B5F
- Registry model: [Boeing 747-4B5F](https://openairdocs.org/model/boeing-747-4b5f) (OpenAirDocs)
- Aircraft serial: 33515
- Aircraft time: 91,656 hours, 15,322 cycles
- System (JASC): [5420 · Nacelle/Pylon Miscellaneous Structure](https://openairdocs.org/jasc/5420)
- Part: Brace
- Condition: Chafed
- Location: Zone 400
- 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/UIEA2025070600843

## Discrepancy

NO.1 PYLON DIAGONAL BRACE RH BELOW HYD DEPRESSURIZATION MODULE FOUND CHAFING.(<P>#1 PYLON DIAGONAL BRACE CHAFING AREA SMOOTHED AS PER RI-54-50-17750 REV.A. (AFTER SMOOTH OUT AREA MEASURED: L=2", W=1.25" & D=0.125"). NO FURTHER DEFECTS NOTED.</P>)

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