# SDR ASAA2022040337887

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 3, 2022
- Submitted: April 6, 2022
- Operation: Air carrier
- Aircraft: [N407AS](https://openairdocs.org/aircraft/N407AS), registered now
- Make and model: Boeing 737990ER
- Aircraft serial: 41731
- Aircraft time: 35,194 hours, 11,038 cycles
- System (JASC): [3460 · Flight Management Computing Hardware System](https://openairdocs.org/jasc/3460)
- Part: Unknown
- Part number: UNKNOWN
- Condition: Unknown
- Location: Unknown
- Stage of operation: NR
- How discovered: V
- Nature of condition: J
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASAA2022040337887

## Discrepancy

F/O SIDE MAP FLAG, NO VSPD FLAG AND LDG ALT FLAG. GROUNDED - YES. FOUND RT FMC FAIL ALONG WITH FMC DISAGREE MESSAGE. PULLED, THEN RESET FMCS COMPTR 2 C/B AND ACCOMP'D B737-900 FIM 34-61 TASK 801, OPS NRML AND ALL FLAGS AND MESSAGES EXTINGUISHED. ETOPS SIGNIF SYST - GND VERIFICATION SUCCESSFUL.

---
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.