# SDR ASAA2019121931646

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 19, 2019
- Submitted: December 19, 2019
- Operation: Air carrier
- Aircraft: [N581AS](https://openairdocs.org/aircraft/N581AS), registered now
- Make and model: Boeing 737890
- Aircraft serial: 35188
- Aircraft time: 47,802 hours, 14,312 cycles
- Engine: Cfmint CFM567B27
- System (JASC): [7320 · Fuel Controlling System](https://openairdocs.org/jasc/7320)
- Part: Switch
- Part number: 2688072
- Condition: Indication
- Location: #2 Eng - Hmu
- 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/ASAA2019121931646

## Discrepancy

HISTORY OF "AFTER ENGINE START, RIGHT ENGINE VALVE CLOSED LIGHT REMAINED ILLUMINATED" GROUNDED - YES. ACCOMP. TSR REMOVED AND REPLACED #2 ENG. HMU HPSOV SWITCH IAW AMM 73-21-09-000-801-F00. OPS CK GOOD. NO FAULTS. GROUND VERIFICATION ACCOMPLISHED OPTS CK GOOD.

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