# SDR UIEA2026012800018

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 29, 2026
- Submitted: February 2, 2026
- Operation: Air carrier
- Aircraft: [N477MC](https://openairdocs.org/aircraft/N477MC), registered now
- Make and model: Boeing 747-47UF
- Registry model: [Boeing 747-47UF](https://openairdocs.org/model/boeing-747-47uf) (OpenAirDocs)
- Aircraft serial: 29255
- Aircraft time: 108,469 hours, 19,009 cycles
- System (JASC): [5310 · Fuselage Main, Structure](https://openairdocs.org/jasc/5310)
- Part: Torque Box
- Part number: 65B0629568
- Part serial: SNS
- Condition: Cracked
- Location: Zone 100
- 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/UIEA2026012800018

## Discrepancy

AFT CARGO BS 1680 RT TORQUE BOX PANEL FOUND CRACKED.  AFT CARGO BS 1660-1680, RBL 30" TO RBL 45.5" TORQUE BOX UPPER SKIN WEB REPLACED AND INSTALLED IAW SRM 51-10-02 AND SRM 51-40-2. NO FURTHER DEFECTS NOTED.

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