# SDR ASAA2022031337700

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 13, 2022
- Submitted: March 17, 2022
- Operation: Air carrier
- Aircraft: [N474AS](https://openairdocs.org/aircraft/N474AS), registered now
- Make and model: Boeing 737990ER
- Aircraft serial: 40715
- Aircraft time: 25,073 hours, 7,906 cycles
- System (JASC): [7320 · Fuel Controlling System](https://openairdocs.org/jasc/7320)
- Part: Hmu
- Part number: 1853M56P16
- Part serial: BECWC932
- Condition: Faulty
- Location: #2 Engine
- Part time: 25,097 hours, 7,913 cycles
- 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/ASAA2022031337700

## Discrepancy

DURING INTERROGATE OF FMC FOUND # 2 FAULT CODE 73-10342 FMV POS SIG OUT OF RANGE, (SHORT TIME) PER T/C 78273000. GROUNDED - YES. REMOVED HMU AND FUEL PUMP IAW TASK CARDS N8473000 AND N8473002. INSTALLED HMU/FUEL PUMP REF T/C N8473001 AND N8473003.

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