# SDR ASAA2014100609298

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: October 6, 2014
- Submitted: October 7, 2014
- Operation: Air carrier
- Aircraft: [N570AS](https://openairdocs.org/aircraft/N570AS), registered now
- Make and model: Boeing 737890
- Aircraft serial: 35185
- Aircraft time: 29,022 hours, 8,673 cycles
- Engine: Cfmint CFM567B27
- System (JASC): [7320 · Fuel Controlling System](https://openairdocs.org/jasc/7320)
- Part: Hmu
- Part number: 442597
- Part serial: BECW7645
- Condition: Warning Light
- Location: Nr 1 Engine
- Part time: 15,251 hours, 4,716 cycles
- Stage of operation: IN
- How discovered: 9
- Nature of condition: J
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASAA2014100609298

## Discrepancy

NR 1 ENGINE VALVE CLOSED LIGHT IS ILLUMINATED, CLOSED.  ACFT GROUNDED. REPLACED THE HMU IAW T/C'S N8473000 & N8473001.  OPS & LK CK'S GOOD.  OK FOR CONTINUED SERVICE.

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