# SDR UIEA2025040700445

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 8, 2025
- Submitted: April 10, 2025
- Operation: Air carrier
- Aircraft: [N472MC](https://openairdocs.org/aircraft/N472MC), registered now
- Make and model: Boeing 747-45E
- Registry model: [Boeing 747-45E](https://openairdocs.org/model/boeing-747-45e) (OpenAirDocs)
- Aircraft serial: 27062
- Aircraft time: 129,648 hours, 22,005 cycles
- System (JASC): [5511 · Horizontal Stabilizer, Spar/Rib](https://openairdocs.org/jasc/5511)
- Part: Rib
- Condition: Cracked
- Location: Zone 300
- 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/UIEA2025040700445

## Discrepancy

EMP - RH HORI STAB TIP CLOSURE RIB LOWER CHORD CRACK.(<P>LOWER CHORD REPLACED AS PER SRM 51-10-02 & NEW LOWER CHORD HOLES TRANSFERRED AS PER SRM 51-40-05 AND NEW LOWER CHORD INSTALLED AS PER SRM 51-40-02. NO FURTHER DEFECTS NOTED.</P>)

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