# SDR UIEA2026082000782

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 20, 2026
- Submitted: August 21, 2026
- Operation: Air carrier
- Aircraft: [N409MC](https://openairdocs.org/aircraft/N409MC), registered now
- Make and model: Boeing 747-47UF
- Registry model: [Boeing 747-47UF](https://openairdocs.org/model/boeing-747-47uf) (OpenAirDocs)
- Aircraft serial: 30558
- Aircraft time: 106,491 hours, 17,065 cycles
- System (JASC): [2760 · Drag Control System](https://openairdocs.org/jasc/2760)
- Part: Switch
- Part number: 2FS551
- Condition: Faulted
- Location: Spoilers
- Stage of operation: TO
- How discovered: O
- Nature of condition: F, J
- Precautionary procedure: C
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/UIEA2026082000782

## Discrepancy

RTO MASTER WARNING AURAL "CONFIG SPOILERS". LOW SPEED RTO 65KTS, RETURNED TO GATE.  R & R AUTOMATIC SPEED BRAKE ARM SWITCH IAW AMM 27-62-10/401 AND AIPC 2762-55-01 ITEM 344. PERFORMED OPS CHK, CHKD OK. PERFORMED T/O WARNING TEST IAW AMM 31-51-00-725-024, TEST PASSED. NO EICAS MESSAGES DISPLAYED. OK FOR SERVICE.

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