# SDR ASAA2014061608237

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: June 16, 2014
- Submitted: June 18, 2014
- Operation: Air carrier
- Aircraft: [N435AS](https://openairdocs.org/aircraft/N435AS), registered now
- Make and model: Boeing 737990ER
- Aircraft serial: 43292
- Aircraft time: 2,453 hours, 798 cycles
- System (JASC): [3460 · Flight Management Computing Hardware System](https://openairdocs.org/jasc/3460)
- Part: Button
- Condition: Failed
- Location: Display
- Part time: 2,455 hours, 798 cycles
- Stage of operation: NR
- How discovered: O
- Nature of condition: O
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASAA2014061608237

## Discrepancy

F/O'S MCDU LINE SELECT BUTTON 5L REQUIRES ABNORMALLY FIRM PRESS TO SELECT THE LINE INTO THE SCRATCHPAD.  ACFT GROUNDED.  REPLACED MCDU.  SYS TESTS GOOD REF TASK 34-61-01-400-802.

---
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.