# SDR ASAA2022050638216

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: May 6, 2022
- Submitted: May 9, 2022
- Operation: Air carrier
- Aircraft: [N538AS](https://openairdocs.org/aircraft/N538AS), registered now
- Make and model: Boeing 737890
- Aircraft serial: 41188
- Aircraft time: 36,509 hours, 10,656 cycles
- System (JASC): [2210 · Autopilot System](https://openairdocs.org/jasc/2210)
- Part: Control Panel
- Part number: 4082260939
- Part serial: 01642878
- Condition: Faulty
- Location: Flight Compartme
- Part time: 15 hours, 8 cycles
- Stage of operation: NR
- How discovered: V
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASAA2022050638216

## Discrepancy

LNAV/VNAV UNABLE TO BE SELECTED. GROUNDED - YES. CURRENT STATUS TEST SHOWS MCP DATA FAULT. REPLACED MCP REF B737-800 AMM 22-11-34-000-801. OPS TEST NORMAL REF AMM 22-11-34-740-801. LAND VERIFY TEST NORMAL REF AMM 22-11-00/201 BITE TEST GROUP #49.

---
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.