# SDR ASAA2017040720414

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 7, 2017
- Submitted: April 17, 2017
- Operation: Air carrier
- Aircraft: [N506AS](https://openairdocs.org/aircraft/N506AS), registered now
- Make and model: Boeing 737890
- Aircraft serial: 35690
- Aircraft time: 33,555 hours, 10,237 cycles
- Engine: Cfmint CFM567B27
- System (JASC): [7530 · Compressor Bleed Control](https://openairdocs.org/jasc/7530)
- Part: Actuator
- Condition: Faulted
- Location: Nr 1 Vsv
- Stage of operation: IN
- How discovered: O
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASAA2017040720414

## Discrepancy

FOUND NR 1 ENGINE LONG TERM RECENT FAULT MESSAGE 75-20391.  THE VSV POSITION SIGNAL IS OUT OF RANGE. ACFT GROUNDED.  REMOVED AND REPLACED THE NR 1 ENGINE VSV ACTUATOR.

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