# SDR P5CA0601473

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 12, 2006
- Submitted: May 1, 2006
- Operation: Air carrier
- Aircraft: [N452PA](https://openairdocs.org/aircraft/N452PA), registered now
- Make and model: Boeing 747-46NF
- Registry model: [Boeing 747-46NF](https://openairdocs.org/model/boeing-747-46nf) (OpenAirDocs)
- Aircraft serial: 30810
- Aircraft time: 22,177 hours, 3,866 cycles
- Engine: Ge CF680C2*
- Engine time: 14,549 hours, 2,501 cycles
- System (JASC): [7200 · Engine (Turbine/Turboprop)](https://openairdocs.org/jasc/7200)
- Part: Blades
- Part number: 1338M51P03
- Part serial: CGE17671
- Condition: Bird Strike
- Location: Nr 4 Engine
- Stage of operation: CL
- How discovered: O
- Nature of condition: C, J
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/P5CA0601473

## Discrepancy

CREW REPORTED JUST AFTER ROTATION, ENGINE NR 4 INDICATED FAN 5.0 VIBRATION.  VIBRATION AUDIBLE AND VARIED WITH THRUST SETTING.  PERFORMED BIRD STRIKE INSPECTION PER AMM 05-51-202-001.  PERFORMED GAS PATH AND CHIP DETECTOR INSPECTION, NIL RESULTS.  CHANGED DAMAGED FAN BLADES, OPERATION NORMAL PER AMM 72-31-02-004.

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.