# SDR FDEA201509182900

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: September 18, 2015
- Submitted: September 22, 2015
- Operation: Air carrier
- Aircraft: [N916FD](https://openairdocs.org/aircraft/N916FD), registered now
- Make and model: Boeing 757-27B
- Registry model: [Boeing 757-27B](https://openairdocs.org/model/boeing-757-27b) (OpenAirDocs)
- Aircraft serial: 24137
- Aircraft time: 694 hours, 25,526 cycles
- System (JASC): [7731 · Engine Ignition Analyzer](https://openairdocs.org/jasc/7731)
- Part: Accelerometer
- Part number: 144957000111
- Part serial: 1060
- Condition: Failed
- Location: Lt Engine
- Part time: 3,132 hours, 1,946 cycles
- Stage of operation: UK
- How discovered: O
- Nature of condition: N
- Precautionary procedure: E
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/FDEA201509182900

## Discrepancy

LEFT ENG BREAD BAND VIBRATION INDICATOR ENTERED & REMAINED IN AMBER BAND.  CREW CONDUCTED COMPULSORY LT ENG SHUTDOWN IAW QRH.  CREW REPORTED THAT THEY DIDN'T FEEL ANY VIBRATION.  EICAS MX MSGS LT ENG BB VIB & LT ENG VIB BITE PRESENT, SUSPECTED INDICATION.  R & R RED LT ENG AVM ACCELEROMETER IAW AMM 77-31-01-4.  R & R RED LT ENG AVM SIGNAL CONDITIONER IAW MM 77-31-03-4.  NEED TO PERFORM HIGH POWER RUN.  PERFORMED AVM SYS OPERATIONAL TEST IAW AMM 77-31-00-5-0 AT 70 PERCENT N1. PERFORMED LT ENG VIBRATION SURVEY TEST 6 IAW AMM 71-00-00-5-3.

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