# SDR ASAA2017062721206

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: June 27, 2017
- Submitted: June 28, 2017
- Operation: Air carrier
- Aircraft: [N585AS](https://openairdocs.org/aircraft/N585AS), registered now
- Make and model: Boeing 737890
- Aircraft serial: 35683
- Aircraft time: 37,750 hours, 11,280 cycles
- System (JASC): [2210 · Autopilot System](https://openairdocs.org/jasc/2210)
- Part: Unknown
- Condition: Malfunctioned
- Location: Autopilot Sys
- Stage of operation: NR
- 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/ASAA2017062721206

## Discrepancy

F/O MASTER, A/P ENGAGED. AT LOC CAPTURE F/O LOC FLIGHT DIRECTOR BAR REMOVED FROM VIEW. AT GS INTERCEPT, GS FD BAR ALSO REMOVED. AUTOPILOT REMAINED ENGAGED, CONTINUED CORRECT GUIDANCE. A/P MANUALLY DISENGAGED, CYCLED FLIGHT DIRECTORS (BOTH) CA FD REMAINED IN VIEW BUT F/O FD REMAINED EXTINGUISHED. AFTER TOUCHDOWN PSEU LIGHT ILLUMINATED AND EXTINGUISHED APPROXIMATELY 5 MINUTES LATER. GROUNDED - YES. REF LOGPAGE 11724652 FOR WORK PERFORMED: NO PREVIOUS RAD ALT FAULTS LOGGED IN DFCS, HGS, OR PSEU PRIOR TO FLIGHT LEG 3. RESET NR 2 RAD ALT C/B. ACCOMPLISHED RAD ALT OPS CHECK, REF AMM 34-33-00, TEST PASSED. LRU STATUS GREEN DURING BITE CHECK. NO EXISTING FAULTS IN PSEU, HGS, OR DFCS. LAND VERIFY AND HGS SYSTEM TEST PASSED, REF AMM 22-00-01 LLM MAINTENANCE PRACTICES.

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