# SDR ASAA2021082535793

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 25, 2021
- Submitted: August 30, 2021
- Operation: Air carrier
- Aircraft: [N918AK](https://openairdocs.org/aircraft/N918AK), registered now
- Make and model: Boeing 737-9
- Registry model: [Boeing 737-9](https://openairdocs.org/model/boeing-737-9) (OpenAirDocs)
- Aircraft serial: 44083
- Aircraft time: 1,112 hours, 442 cycles
- System (JASC): [3460 · Flight Management Computing Hardware System](https://openairdocs.org/jasc/3460)
- Part: Display
- Condition: Malfunctioned
- Location: Left
- Stage of operation: CR
- How discovered: 9
- Nature of condition: O
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASAA2021082535793

## Discrepancy

LEFT MCDU DISPLAY AT MAX BRIGHTNESS IS ONLY 1/2 AS BRIGHT AS THE RIGHT MCDU. NOTE: LEFT MCDU WENT TO FULL BRIGHT APPROX AFTER 2 HOURS AT CRUISE. GROUNDED - YES. COULD NOT DUPLICATE ISSUE. CAPTAIN'S MCDU OPS NML REF B737-9 MM 34-61-01. ETOPS GROUND VERIFICATION TEST SUCCESSFUL. SEAMC ETOPS JEREMY NOTIFIED.

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.