# SDR ASAA2017032120241

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 21, 2017
- Submitted: March 23, 2017
- Operation: Air carrier
- Aircraft: [N559AS](https://openairdocs.org/aircraft/N559AS), registered now
- Make and model: Boeing 737890
- Aircraft serial: 35178
- Aircraft time: 38,908 hours, 11,533 cycles
- System (JASC): [8012 · Engine Start Valves/Controls](https://openairdocs.org/jasc/8012)
- Part: Switch
- Condition: Malfunctioned
- Location: Start Valve
- Stage of operation: TX
- How discovered: O
- Nature of condition: O
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASAA2017032120241

## Discrepancy

NR 1 START VALVE FAILED TO CLOSE AFTER START. MANUALLY SHUT OFF.  ACFT GROUNDED. ACCOMPLISHED START SWITCH TEST OF NR 1 ENGINE START SWITCH IAW  AMM 80-11-00. OPS CHECKED NORMAL.

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