# SDR UIEA2026091700882

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: September 17, 2026
- Submitted: September 18, 2026
- Operation: Air carrier
- Aircraft: [N415MC](https://openairdocs.org/aircraft/N415MC), registered now
- Make and model: Boeing 747-47UF
- Registry model: [Boeing 747-47UF](https://openairdocs.org/model/boeing-747-47uf) (OpenAirDocs)
- Aircraft serial: 32837
- Aircraft time: 95,721 hours, 16,012 cycles
- Engine: Ge CF680C2B5F
- System (JASC): [7200 · Engine (Turbine/Turboprop)](https://openairdocs.org/jasc/7200)
- Part: Engine
- Condition: Vibration
- Location: Nr 1
- Stage of operation: CR
- How discovered: O
- Nature of condition: E
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/UIEA2026091700882

## Discrepancy

MULTIPLE ALT VIBRATIONS FELT FIRST THEN INDICATIONS ON NR 1 ENG UP TO 5.0.  ACCOMPLISHED VIBE SURVEY ENGINE SUCCESSFULLY BALANCED N1 AT 0.6 AT 99% N1 IAW AMM 71-00-00 AND 72-32-00 AND ECM 2026P-292. NO FURTHER DEFECTS NOTED.

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