# SDR UIEA2025021600148

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: February 16, 2025
- Submitted: February 20, 2025
- Operation: Air carrier
- Aircraft: [N453PA](https://openairdocs.org/aircraft/N453PA), registered now
- Make and model: Boeing 747-46NF
- Registry model: [Boeing 747-46NF](https://openairdocs.org/model/boeing-747-46nf) (OpenAirDocs)
- Aircraft serial: 30811
- Aircraft time: 94,648 hours, 16,412 cycles
- System (JASC): [7200 · Engine (Turbine/Turboprop)](https://openairdocs.org/jasc/7200)
- Part: Engine
- Condition: Vibration
- Location: Nr 1
- Stage of operation: CL
- How discovered: O
- Nature of condition: E, J
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/UIEA2025021600148

## Discrepancy

ENG 1 VIB 4.0, N1 FAN, STEADY INCREASE THRU UPPER 20'S FLIGHT LEVEL.(<P>RAN ENG 1 PER 71-00-00-705-057-J00. NOTED 3.1 VIBRATION PEAK PER MCC ENGINEERING. OPS CHECK NORMAL.</P>)

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