# SDR S01472020

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 12, 2001
- Submitted: July 25, 2001
- Operation: Air carrier
- Make and model: Boeing 747-400
- Registry model: [Boeing 747-400](https://openairdocs.org/model/boeing-747-400) (OpenAirDocs)
- Aircraft serial: 29219
- Engine: Pwa PW4056
- System (JASC): [7200 · Engine (Turbine/Turboprop)](https://openairdocs.org/jasc/7200)
- Part: Engine
- Part serial: 727824
- Condition: Surges
- Location: # 3 Eng
- Part time: 14,024 hours, 2,394 cycles
- Stage of operation: TO
- How discovered: O
- Nature of condition: O
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/S01472020

## Discrepancy

B-18207 DUE PERFORMANCE A "PACK OFF",MAX THRUST T/O PERFORMED,AT 500 FT ENG-3 SURGED,THRUST REDUCED ALL PARAMETERS NORMAL.C/A:1.IAW FIM 71-00-00,FIG 107,INSPECT ENG INLET/EXHAUST AREA,MCDS AND BLEED PORTS,BORESCOPE INSPECTED FOR COMPRESSOR/TURBINE BLADES,ALL CONDITION NORMAL. 2.CHECK FOUND INLET GUIDE VANE OUT OF RIG AND ADJUSTED,PERFORMED ENG MAX POWER TEST SATISDIED. 3.THE MOC DECIDED TO REPLACED ENG-3 DUE SURGE ROOT CAUSE NOT IDENTIFIED,ENG REPLACED AND RUN-UP TEST NORMAL.

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