# SDR ASAA2022080539385

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 5, 2022
- Submitted: August 9, 2022
- Operation: Air carrier
- Aircraft: [N453AS](https://openairdocs.org/aircraft/N453AS), registered now
- Make and model: Boeing 737990ER
- Aircraft serial: 36354
- Aircraft time: 32,303 hours, 10,195 cycles
- System (JASC): [2210 · Autopilot System](https://openairdocs.org/jasc/2210)
- Part: Lru
- Part number: UNKNOWN
- Condition: Faulted
- Location: Unknown
- Stage of operation: NR
- How discovered: O
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASAA2022080539385

## Discrepancy

AUTOLAND NO SUCCESSFUL. ATTEMPTED TO LAND GREATER THAN 50' LEFT OF CENTERLINE. WINDS 350/8 RWY 03. CRITICAL AREA PROTECTED. GROUNDED - YES. INITIAL EVALUATION, PERFORMED HGS SYSTEM TEST IAW B737-900 SMM 34-36-00 SEC 500. FAULT REVIEW REVEALED ILS ANOMALY DETECTED ON LEG 7, WHICH WOULD LINE UP WITH DEFECT ORIGINATION DATE. ALSO NOTED: FCC1 ON 2 LEGS IN LAST 20. NO OTHER DEFECTS NOTED. SYSTEM TEST PASS. PERFORMED DFCS FAULT REVIEW IAW B737-900 AMM 22-11-00-740-806. NO RELEVANT FAULTS NOTED. PERFORMED DFCS LAND VERIFY IAW AMM 22-11-00-700-801. ALSO REF B737-900 FIM 22-11 TASK 899. LRU REPLACE TEST FOR FCC IAW B737-900 22-11-00-740-815 DUE TO HGS FAULTS NOTED. ALL TESTS PASS. NO ADDITIONAL FAULTS NOTED. NO HISTORY FOR THIS DEFECT.

---
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.