# SDR ASAA2021072635591

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 26, 2021
- Submitted: August 5, 2021
- Operation: Air carrier
- Aircraft: [N453AS](https://openairdocs.org/aircraft/N453AS), registered now
- Make and model: Boeing 737990ER
- Aircraft serial: 36354
- Aircraft time: 28,310 hours, 9,014 cycles
- System (JASC): [3430 · Landing and Taxi Aids](https://openairdocs.org/jasc/3430)
- Part: Autoland Sys
- Condition: Faulted
- 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/ASAA2021072635591

## Discrepancy

INFO ONLY AUTOLAND UNSUCCESSFUL, NO FLARE ARM *. GROUNDED - YES. ACCOMPLISHED FAULT ISOLATION TASK FOR INBOUND CONDITION RELATED TO AUTOLAND PER B737-900 FIM 22-11 TASK 899 - DFCS FAULT REVIEW SHOWED NO RELEVANT FAULTS ON EITHER FCC AND DFCS GROUP #49 (LAND VERIFY) TEST PER B737-900 AMM 22-11-00-700-801 - ALL TESTS PASS.

---
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.