# SDR IPXA2026100523556

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: September 25, 2026
- Submitted: October 5, 2026
- Operation: Air carrier
- Aircraft: [N634UP](https://openairdocs.org/aircraft/N634UP), registered now
- Make and model: Boeing 747-8F
- Registry model: [Boeing 747-8F](https://openairdocs.org/model/boeing-747-8f) (OpenAirDocs)
- Aircraft serial: 37564
- Aircraft time: 37,769 hours, 5,605 cycles
- System (JASC): [5514 · Horizontal Stabilizer Miscellaneous Structure](https://openairdocs.org/jasc/5514)
- Part: Channel
- Part number: 65B0382212
- 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/IPXA2026100523556

## Discrepancy

DURING PERFORM EO-84432-JIC1, FOUND WEDGE CHANNEL CRACK AT RT STAB BL 421.5. PERFORMED THE HEAT TREATMENT FROM O TO T62 CONDITION. IAW SREO-92949-REQ1, REV 1, STEP 5.

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