# SDR ASAA2014100609314

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: October 6, 2014
- Submitted: October 10, 2014
- Operation: Air carrier
- Aircraft: [N459AS](https://openairdocs.org/aircraft/N459AS), registered now
- Make and model: Boeing 737990ER
- Aircraft serial: 36352
- Aircraft time: 2,191 hours, 697 cycles
- Engine: Cfmint CFM567B27E
- System (JASC): [7320 · Fuel Controlling System](https://openairdocs.org/jasc/7320)
- Part: Hmu
- Part number: 1853M56P16
- Part serial: BECWB637
- Condition: Faulted
- Location: Nr 1 Engine
- Part time: 2,191 hours, 697 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/ASAA2014100609314

## Discrepancy

FOUND SHORT TIME FAULT 73-10351 THE FMV POSITION SIGNALS DISAGREE ON THE NR 1 ENGINE.  ACFT GROUNDED. DID FIM 73-25, TASK 804, STEP F-G(1) - (5).  WIRING CK'S NORMAL.  R & R THE NR 1 HMU IAW T/C'S N8473000 & N8473001 ENG OPS, LEAK & OPS CHECKED GOOD.  OK FOR CONTINUED SERVICE.

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