# SDR ASAA2018081095724

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 9, 2018
- Submitted: August 10, 2018
- Operation: Air carrier
- Aircraft: [N468AS](https://openairdocs.org/aircraft/N468AS), registered now
- Make and model: Boeing 737990ER
- Aircraft serial: 41735
- Aircraft time: 16,418 hours, 5,470 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/ASAA2018081095724

## Discrepancy

AUTOLAND UNSUCCESSFUL. BOTH AUTOPILOTS ENGAGED W/ FLARE ARMED. NO NOSE UP TRIMMING OCCURRED. APP WARN AND NO AIII AT 100 FT RA. GROUNDED - YES. ACCOMPLISHED MAINTENANCE PRACTICE FOR LLM SPECIAL CONDITION AUTOLAND REF AMM 22-00-01-730-807 & HGS LANDING REF AMM 22-00-01-730-808. DFCS BITE REF FIM 22-11 TASK 801 SHOWS NO FAULTS. HGS FAULT HISTORY SHOWS RWY ELEV ERROR. FOUND HGS RWY ELV SET TO EL379 INSTEAD OF EL120. RE-ACCOMPLISHED HGS SYSTEM/SENSORS TEST REF SMM 34-36-00 & DFCS (GP 49) REF AMM 22-11-00, OPS CK NML. REF L/P 11912572 FOR A/C APPROACH SURVEY.

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