# SDR IPXA2026051623776

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: May 11, 2026
- Submitted: May 19, 2026
- Operation: Air carrier
- Aircraft: [N621UP](https://openairdocs.org/aircraft/N621UP), registered now
- Make and model: Boeing 747-8F
- Registry model: [Boeing 747-8F](https://openairdocs.org/model/boeing-747-8f) (OpenAirDocs)
- Aircraft serial: 65785
- Aircraft time: 24,034 hours, 3,568 cycles
- System (JASC): [5524 · Elevator Miscellaneous Structure](https://openairdocs.org/jasc/5524)
- Part: Stiffener
- Part number: 65B0570155
- 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/IPXA2026051623776

## Discrepancy

CRACKED STIFFENER DURING PERFORM EO-94633-REQ1 FOUND LT INBD ELEVATOR STIFFENER CRACK   INSTALL NEW STIFFENER IAW SRM 51-40-02-0G REV.48 AND BOEING DWG 65B05701, SH 2, REV J.

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