# SDR ASAA2015120214080

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 2, 2015
- Submitted: December 4, 2015
- Operation: Air carrier
- Aircraft: [N581AS](https://openairdocs.org/aircraft/N581AS), registered now
- Make and model: Boeing 737890
- Aircraft serial: 35188
- Aircraft time: 32,975 hours, 10,040 cycles
- System (JASC): [2210 · Autopilot System](https://openairdocs.org/jasc/2210)
- Part: Autopilot Sys
- Condition: Malfunctioned
- Stage of operation: AP
- 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/ASAA2015120214080

## Discrepancy

FAILED ATTEMPTED AUTOLAND APPROACH.  AUTOPILOT DISENGAGED.  ACFT GROUNDED. PERFORMED FIM 22-11, TASK 801, FFR SHOWED ON FCC A, LOC BEAM ANOMALY DET NR 22-11367 AND FCC B SHOWED FGN, FCC DROPPED IN APPROXIMATELY 22-11414.  REF SAME FIM, CURRENT STATUS TEST GOOD, PERFORMED LAND VERIFY BITE NR 49, NO FAULTS.

---
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.