# SDR CALA2014020700157

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 31, 2014
- Submitted: February 7, 2014
- Operation: Air carrier
- Aircraft: [N78866](https://openairdocs.org/aircraft/N78866), registered now
- Make and model: Boeing 757-33N
- Registry model: [Boeing 757-33N](https://openairdocs.org/model/boeing-757-33n) (OpenAirDocs)
- Aircraft serial: 32591
- Aircraft time: 39,686 hours, 12,006 cycles
- Engine: Rroyce RB21122*
- System (JASC): [7732 · Engine Vibration Analyzer](https://openairdocs.org/jasc/7732)
- Part: Accelerometer
- Part number: 144957000111
- Condition: Faulty
- Location: Vibration Sys
- Stage of operation: CL
- How discovered: O
- Nature of condition: N
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/CALA2014020700157

## Discrepancy

ON CLIMB OUT, NR 1 ENG N3 INCREASED TO AMBER, RAN QRH, REDUCED THRUST FROM 89% N1 TO 75% N1 TO REMAIN OUT OF THE AMBER RANGE, DIVERTED TO HNL.  R & R AVM ACCELEROMETER IAW AMM 77-31-01 RBN 5109 R & R NR 1ENG N3 TACH GEN IAW AMM 77-12-02.M7165.  PERFORMED HIGH POWER RUN OF ENG NR 1.  TAKE OFF VIBE 1.3 WITHIN LIMITS IAW AMM 71-00-00 -715-223.  ROTABLE PARTS CHANGE WAS INDICATED TT 1652698, SN OFF 00661, TT 1653245, SN OFF 03791 TRANSMITTER, VI OFF 19-7731-9-9001 0661, ON 19-7731-9-9001 0426 SENSOR, SPEED, OFF 19-7712-9-9001 3791 & ON 19-7712-9-9001 3812.

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