# SDR UIEA201904233915

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 20, 2019
- Submitted: April 23, 2019
- Operation: Air carrier
- Aircraft: [N1489A](https://openairdocs.org/aircraft/N1489A), registered now
- Make and model: Boeing 767-31K
- Registry model: [Boeing 767-31K](https://openairdocs.org/model/boeing-767-31k) (OpenAirDocs)
- Aircraft serial: 27206
- Aircraft time: 104,704 hours, 20,369 cycles
- System (JASC): [7714 · Engine RPM Indicating System](https://openairdocs.org/jasc/7714)
- Part: Sensor
- Part number: 154EWD
- Part serial: EGNH2925
- Condition: False Activation
- Location: Lt Engine N1
- Stage of operation: CR
- How discovered: O
- Nature of condition: N
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/UIEA201904233915

## Discrepancy

LEFT ENGINE N1 UP TO 10% FLUCTUATION ON BELOW THE RIGHT ENGINE, N2 READS 5 % HIGHER THAN THE RIGHT ENGINE. LEFT EGT BLINKS OFF & ON DURING DESCENT. STATUS MSG L ENG EEC C2. STATUS MESSAGE L PIMU.(<P>L PIMU FAULTED T25 SENSOR CHANNEL A, READING 0 CHANNEL B, READING 92 C.  REPLACED T25 SENSOR ON LEFT ENGINE IAW AMM 73-21-02. OPS CHECK NORMAL IAW AMM 71-00-00 TEST 11. ENG RUN & INDICATION ON N1 & N2 NORMAL IAW 71-00-00. RESET CONNECTORS ON EGT JUNCTION BOX ON LEFT ENGINE. EGT OPS CHECK NORMAL. </P>)

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