# SDR ASAA2015021910728

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: February 19, 2015
- Submitted: February 23, 2015
- Operation: Air carrier
- Aircraft: [N538AS](https://openairdocs.org/aircraft/N538AS), registered now
- Make and model: Boeing 737890
- Aircraft serial: 41188
- Aircraft time: 10,842 hours, 3,240 cycles
- System (JASC): [7714 · Engine RPM Indicating System](https://openairdocs.org/jasc/7714)
- Part: Fault Code
- Condition: Activated
- Location: N2 Tach
- Stage of operation: IN
- How discovered: 9
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASAA2015021910728

## Discrepancy

WHILE ACCOMPLISHING AAVM INTERROGATION, FOUND E2 N2 TACH LOSS FAULTS LOGGED IN AAVM.  ACFT GROUNDED. ON DEFERRAL.

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