# SDR ASAA2021080435621

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 4, 2021
- Submitted: August 10, 2021
- Operation: Air carrier
- Aircraft: [N587AS](https://openairdocs.org/aircraft/N587AS), registered now
- Make and model: Boeing 737890
- Aircraft serial: 35684
- Aircraft time: 49,407 hours, 14,326 cycles
- System (JASC): [3433 · Microwave Landing System](https://openairdocs.org/jasc/3433)
- 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/ASAA2021080435621

## Discrepancy

ATTEMPTED AUTOLAND & HGS AIII, DEVELOPED A HIGH SINK RATE AND DID NOT FLARE. THEN APP/WARN IN THE HUD. DISCONNECTED A/P A/T AND LANDED MANUALLY. GROUNDED - YES. CHECKED FOUND HGS APCH WARN FOR LEG 6 AIRSPEED EXCEEDANCE. HGS SYSTEM TEST PASSED REF HGS 4000 SSM 34-36-00. ACCOMPLISHED LAND VERIFY TEST. TEST PASSED GROUND VERIFICATION TEST PASS. REF B737-800 AMM 22-11-00-700-801.

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