# SDR ASAA2023033142703

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 31, 2023
- Submitted: April 4, 2023
- Operation: Air carrier
- Aircraft: [N481AS](https://openairdocs.org/aircraft/N481AS), registered now
- Make and model: Boeing 737990ER
- Aircraft serial: 44106
- Aircraft time: 28,400 hours, 8,883 cycles
- System (JASC): [7320 · Fuel Controlling System](https://openairdocs.org/jasc/7320)
- Part: Hmu
- Part number: 1853M56P16
- Part serial: BECWD190
- Condition: Faulted
- Location: Nr 1 Engine
- Part time: 28,495 hours, 8,912 cycles
- Stage of operation: TX
- How discovered: V
- Nature of condition: J
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASAA2023033142703

## Discrepancy

#1 ENG VALVE CLOSED VALVE LT REMAINS IN BRIGHT WITH ENG SHUT DOWN. GROUNDED - YES.  REMOVED AND INSTALLED #1 ENGINE HMU REF. ASA T/C # N8473000 AND T/C # N8473001. P6-3 ENGINE FUEL ENG 1 HPSOV IND CIRCUIT BREAKER RESET. OPS CHECK AND LEAK CHECK GOOD. EEC BITE CHECK GOOD. ENG #1 FUEL CONTROL VALVE INDICATION OPERATES NORMALLY.

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