# SDR R61A2024091800430

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: September 18, 2024
- Submitted: September 23, 2024
- Operation: Air carrier
- Aircraft: [N653RW](https://openairdocs.org/aircraft/N653RW), registered now
- Make and model: Emb ERJ 170-100 SE
- Registry model: [EMB ERJ 170-100 SE](https://openairdocs.org/model/embraer-erj-170-100-se) (OpenAirDocs)
- Aircraft serial: 17000076
- Aircraft time: 48,522 hours, 30,891 cycles
- System (JASC): [3230 · Landing Gear Retraction/Extension System](https://openairdocs.org/jasc/3230)
- Part: Uplock Sensor
- Condition: Faulted
- Location: Zone 700
- Stage of operation: CL
- How discovered: O
- Nature of condition: E, J
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/R61A2024091800430

## Discrepancy

LOUD AND CONTINUOUS HYDRAULIC THUMPING SOUND OCCURRING FROM NOSE GEAR AREA. THUMPING STARTED RIGHT AFTER GEAR RETRACTION AND CONTINUED UNTIL GEAR WAS EXTENDED.  THUMPING WAS HEARD AND FELT AT 3-5 SECOND INTERVALS UNTIL THE GEAR WAS EXTENDED SEVERAL MINUTES LATER.  DECLARED EMERGENCY, LANDED WITHOUT INCIDENT. R&R UPLOCK PROXIMITY MLG (RH) SENSOR #2.

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