# SDR ASAA201805144583

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: May 9, 2018
- Submitted: May 18, 2018
- Operation: Air carrier
- Aircraft: [N459AS](https://openairdocs.org/aircraft/N459AS), registered now
- Make and model: Boeing 737990ER
- Aircraft serial: 36352
- Aircraft time: 16,782 hours, 5,559 cycles
- Engine: Cfmint CFM567B27E
- System (JASC): [7320 · Fuel Controlling System](https://openairdocs.org/jasc/7320)
- Part: Hmu
- Part number: 442653
- Part serial: BECW6767
- Condition: Failed
- Location: Nr 1 Engine
- Part time: 33,325 hours, 10,404 cycles
- Stage of operation: TX
- How discovered: O
- Nature of condition: J
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASAA201805144583

## Discrepancy

AFTER NR 1 ENGINE SHUTDOWN,  VALVE CLOSED BLUE LIGHT DID NOT INDICATE VALVE CLOSED.  BLUE LIGHT REMAINS BRIGHT.  ACFT GROUNDED.   REMOVED AND REPLACED THE NR 1 ENGINE HMU IAW T/C N8473000 AND N 8473001. OPS AND LEAK CHECKED GOOD.

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