# SDR ASAA2017053120930

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: May 31, 2017
- Submitted: June 5, 2017
- Operation: Air carrier
- Aircraft: [N491AS](https://openairdocs.org/aircraft/N491AS), registered now
- Make and model: Boeing 737990ER
- Aircraft serial: 44109
- Aircraft time: 6,159 hours, 2,108 cycles
- System (JASC): [2210 · Autopilot System](https://openairdocs.org/jasc/2210)
- Part: Autoland Sys
- Condition: Malfunctioned
- Stage of operation: LD
- 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/ASAA2017053120930

## Discrepancy

UNSUCCESSFUL AUTOLAND.  ACFT GROUNDED.  IAW FIM 22-11, TASK 801 DFCS BITE, NO CURRENT FAULTS. FLIGHT LEG 01 SHOWS FAULTS 22-11210 (FCC-B), 22-11209 (FCC-A). ACCOMPLISHED  FIM 22-11 TASK 801 DFCS BITE GROUP NR 20. TESTS PASS, COULD NOT DUPLICATE. ACCOMPLISHED TEST GROUP NR 49 LAND VERIFY REF 22-11-00/201. ALL REQUIRED TESTS PASSED,  SMM 34-36-00. NO CURRENT FAULTS. LEGS 5 SHOWS AIII INCAP REF G/S ERROR, LEG 7 RO CTN ILS ANOMALY. ACCOMPLISHED HGS SYSTEM AND OPS TEST. ALL REQUIRED TESTS PASSED.

---
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.