# SDR ASAA2017032120240

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 21, 2017
- Submitted: March 27, 2017
- Operation: Air carrier
- Aircraft: [N508AS](https://openairdocs.org/aircraft/N508AS), registered now
- Make and model: Boeing 737890
- Aircraft serial: 35691
- Aircraft time: 33,092 hours, 9,966 cycles
- Engine: Cfmint CFM567B27
- System (JASC): [7530 · Compressor Bleed Control](https://openairdocs.org/jasc/7530)
- Part: Actuator
- Part number: 1211313010
- Part serial: APMRK643
- Condition: Failed
- Location: Nr 1 Engine
- Part time: 33,149 hours, 9,979 cycles
- Stage of operation: IN
- How discovered: V
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASAA2017032120240

## Discrepancy

NR 1 ENGINE BITE TEST, FOUND SHORT TIME FAULT MESSAGE 75-30401 - THE VSV POSITION SIGNALS DISAGREE.  ACFT GROUNDED. REMOVED AND REPLACED RIGHT VSV ACTUATOR IAW AMM 75-31-01. LEAK TESTED GOOD, ACTUATORS TESTED GOOD.

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