# SDR R61A2022021100120

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: February 7, 2022
- Submitted: February 11, 2022
- Operation: Air carrier
- Aircraft: [N418YX](https://openairdocs.org/aircraft/N418YX), 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: 17000383
- Aircraft time: 20,418 hours, 13,763 cycles
- System (JASC): [3200 · Landing Gear System](https://openairdocs.org/jasc/3200)
- Part: Sensor
- Condition: Inoperative
- Location: Zone 700
- Stage of operation: CR
- 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/R61A2022021100120

## Discrepancy

DURING CRUISE, PILOTS FELT A HARD JOLT FROM UNDER SEAT THAT FLIGHT ATTENDANTS COULD FEEL AS WELL.  GOT WORSE AS WE DESCENDED. DID NOT NOTICE ONCE WE DROPPED THE NOSE GEAR, THUMP OCCURRED EVERY 15-20 SECONDS. DECLARED EMERGENCY, LANDED WITHOUT INCIDENT. R&R #2 NLG UPLOCK SENSOR.

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