# SDR AALA202004019009

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 31, 2020
- Submitted: April 1, 2020
- Operation: Air carrier
- Aircraft: [N980AN](https://openairdocs.org/aircraft/N980AN), registered now
- Make and model: Boeing 737823
- Aircraft serial: 33203
- Aircraft time: 33,608 hours, 13,725 cycles
- System (JASC): [2210 · Autopilot System](https://openairdocs.org/jasc/2210)
- Part: Control Panel
- Condition: Malfunctioned
- Location: Cockpit
- Stage of operation: CL
- How discovered: O
- Nature of condition: G
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/AALA202004019009

## Discrepancy

AIRCRAFT NOT GROUNDED - MULTIPLE AVIONICS FAILURES DURING CLIMBOUT, VNAV INOP, DISPLAY SOURCE 1 FEW SECONDS THEN NORMAL, MODE CONTROL PANEL (MCP) COULD NOT RESET VALUE IN ALT WINDOW TEMPORARILY.  TROUBLESHOOTING ACCOMPLISHED.  NO. 1 DISPLAY ELECTRONIC UNIT (DEU) FAULT, TESTED NORMAL PER FIM 31-63-00.  VNAV INOP, CHECKS NORMAL PER FIM 34-61-00.  RESET MODE CONTROL PANEL (MCP) AND ACCOMPLISHED TEST PER FIM 22-11-00, ALL TESTS NORMAL.

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