# SDR ASAA2020040332598

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 31, 2020
- Submitted: April 3, 2020
- Operation: Air carrier
- Aircraft: [N563AS](https://openairdocs.org/aircraft/N563AS), registered now
- Make and model: Boeing 737890
- Aircraft serial: 35180
- Aircraft time: 50,929 hours, 15,112 cycles
- System (JASC): [7320 · Fuel Controlling System](https://openairdocs.org/jasc/7320)
- Part: Warning System
- Condition: False Activation
- Location: Cockpit
- Stage of operation: IN
- How discovered: O
- Nature of condition: N
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASAA2020040332598

## Discrepancy

FMC CDU FAULTS: ENGINE #1, 73-31741 (DEU 1 LEFT FLAP AND RIGHT FLAP POSITION DATA DISAGREE) SHORT TIME FAULT. ENGINE #1, 73-31751 (DEU 2 LEFT FLAP AND RIGHT FLAP POSITION DATA DISAGREE) SHORT TIME FAULT. ENGINE #2, 73-31742 (DEU 1 LEFT FLAP AND RIGHT FLAP POSITION DATA DISAGREE) SHORT TIME FAULT. ENGINE #2, 73-31752 (DEU 2 LEFT FLAP AND RIGHT FLAP POSITION DATA DISAGREE) SHORT TIME FAULT. GROUNDED - YES. NO MORE FAULTS IN NEW LEGS 1-6. CW B737-800 FIM 73-24 TASK 810 FOUND FCC B FAULT 31-67340 IN HISTORY CW FIM 31-63 TASK 809 FCC B LLM TESTS CHECKED GOOD INTERMITTENT FAULT. COMPLETED REPAIR CONFIRMATION IN FIM 73-24 TASK 810 AND ALL TESTS NORMAL.

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