# SDR UIEA200800269

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 20, 2008
- Submitted: August 4, 2008
- Operation: Air carrier
- Aircraft: [N522MC](https://openairdocs.org/aircraft/N522MC), registered now
- Make and model: Boeing 747-2D7B
- Registry model: [Boeing 747-2D7B](https://openairdocs.org/model/boeing-747-2d7b) (OpenAirDocs)
- Aircraft serial: 21783
- Engine: Ge CF650E2
- System (JASC): [7200 · Engine (Turbine/Turboprop)](https://openairdocs.org/jasc/7200)
- Part: Engine
- Part number: CF650E2
- Part serial: 517475
- Condition: Vibration
- Location: Nr 2
- Stage of operation: NR
- How discovered: O
- Nature of condition: E, J
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/UIEA200800269

## Discrepancy

BLOCK TURNBACK NR 2 ENGINE EGT FLAG IN VIEW WITH UNUSUAL NOISE (RUMBLING) HEARD AND FELT DURING THROTTLE MOVEMENT FROM NR 2 ENGINE.  REPLACED ENGINE IAW WORK CARD E2008.  (A)

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