# SDR AALA202607201591

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 17, 2026
- Submitted: July 20, 2026
- Operation: Air carrier
- Aircraft: [N814NN](https://openairdocs.org/aircraft/N814NN), registered now
- Make and model: Boeing 737823
- Aircraft serial: 29562
- Aircraft time: 50,266 hours, 21,288 cycles
- System (JASC): [3160 · Central Display](https://openairdocs.org/jasc/3160)
- Part: Deu
- Part number: 4081600940
- Part serial: 40616764
- Condition: Erratic
- Location: Zone 200
- Part time: 24,819 hours, 10,902 cycles
- Stage of operation: CL
- How discovered: O
- Nature of condition: N
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/AALA202607201591

## Discrepancy

AIRCRAFT WAS GROUNDED: APPROXIMATELY 10,000 FEET AFTER TAKE OFF, THE DISPLAY SOURCE 1 LIGHT ILLUMINATED ON BOTH PILOT PFD'S THEN EXTINGUISHED AFTER APPROXIMATELY 20 SECONDS. LESS THAN A MINUTE LATER THE DISPLAY SOURCE ILLUMINATED AGAIN ON BOTH SIDES ACCOMPANIED BY BOTH EEC'S TOALTN MODE. THEY ALL EXTINGUISHED APPROXIMATELY AFTER ABOUT 2 MINUTES FOR REMAINDER OF FLIGHT. BROUGHT UP HYD PAGE AND SYS A WAS 74 AND SYS B WAS 86. DECESION MADE TO DIVERT TO PNS, EMERGENCY WAS DECLARED AND AIRCRAFT LANDED OVERWEIGHT WITHOUT ISSUE. MAINTENANCE REPLACED DEU 1 IAW AMM 31-62-21-400-801.

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