# SDR IPXA2019101347830

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: October 13, 2019
- Submitted: October 14, 2019
- Operation: Air carrier
- Aircraft: [N451UP](https://openairdocs.org/aircraft/N451UP), registered now
- Make and model: Boeing 757-24APF
- Registry model: [Boeing 757-24APF](https://openairdocs.org/model/boeing-757-24apf) (OpenAirDocs)
- Aircraft serial: 27739
- Aircraft time: 34,094 hours, 19,504 cycles
- Engine: Rroyce RB211*
- System (JASC): [7200 · Engine (Turbine/Turboprop)](https://openairdocs.org/jasc/7200)
- Part: Engine
- Condition: Power Loss
- Location: Left
- Stage of operation: CL
- How discovered: O
- Nature of condition: R
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/IPXA2019101347830

## Discrepancy

DURING CLIMB LEFT ENGINE N1 READ AS MUCH AS 6% HIGHER THAN THE RIGHT ENGINE. NO ASSYMETRIC THRUST NOTED BY YOKE POSITION EGT FUEL HOW N2 AND N3 WERE A LITTLE HIGHER BUT NOT AS MUCH AS THE N1. NO LIMITS EXCEEDED. NO EICAS OF STATUS MESSAGE,  PERFORMED ENGINE PER MM 71 00 00 CONFIRMED A 4% DIFFERENCE IN N1 AT ALL SPEEDS ABOVE IDLE REQUIRES FURTHER T/S LF 1199911 10/12/19 UPON FURTHER REIVE FOUND TO BE WITHIN LIMITS REF MM 76 11 00

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