# SDR QXEA2020112500329

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: November 25, 2020
- Submitted: November 25, 2020
- Operation: Air carrier
- Aircraft: [N634QX](https://openairdocs.org/aircraft/N634QX), registered now
- Make and model: Emb ERJ 170-200 LR
- Registry model: [EMB ERJ 170-200 LR](https://openairdocs.org/model/embraer-s-a-erj-170-200-lr) (OpenAirDocs)
- Aircraft serial: 17000726
- Aircraft time: 5,696 hours, 3,473 cycles
- System (JASC): [3444 · Ground Proximity System](https://openairdocs.org/jasc/3444)
- Part: Control Unit
- Part number: 066011534001
- Condition: Malfunctioned
- Location: Radar Altimeter
- Stage of operation: AP
- How discovered: O
- Nature of condition: J
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/QXEA2020112500329

## Discrepancy

AUTOLAND UNSATISFACTOR AUTOPILOT DISENGAGED AT 8 FEET ABOVE RUNWAY.  CA LANDED AIRCRAFT.  DEFERRED RADAR ALTIMETER.  CLEARED BY REPLACING NR 1 RADAR ALTIMETER UNIT, IAW E175 AMM TASK 34-31-01-000/400-801-A.  OPERATIONS CHECK GOOD, AIRCRAFT IS CATEGORY III QUALIFIED COCKPIT PLACARD READ CAT III.  RETURNED TO SERVICE.

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