# SDR DXTA2026021106831

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: February 8, 2026
- Submitted: February 11, 2026
- Operation: Air carrier
- Aircraft: [N486QS](https://openairdocs.org/aircraft/N486QS), registered now
- Make and model: Emb EMB-505
- Registry model: [EMB EMB-505](https://openairdocs.org/model/embraer-executive-emb-505) (OpenAirDocs)
- Aircraft serial: 50500840
- Aircraft time: 1,152 hours, 925 cycles
- System (JASC): [3230 · Landing Gear Retraction/Extension System](https://openairdocs.org/jasc/3230)
- Part: Uplock
- Part number: 26171000403
- Part serial: A0225
- Condition: Faulted
- Location: Nlg
- Stage of operation: LD
- 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/DXTA2026021106831

## Discrepancy

SELECTED GEAR DOWN AT APPROX 300 KIAS, RECEIVED MLG DISAGREE CAS.  HAD TOWER LOOK, CONFIRMED MLG DOWN, NLG UP & NLG DOORS CLOSED.  RAN QRH & WAS ABLE TO GET NLG DOWN.   IAW MM 31-31-00 & 45-45-00.  FIM NLG DOWNLOCK SNSR/LEVER DISAG 32-61-00-810-812-A. JACKED ACFT. PERFORMED 5 SUCESSFULL MLG CYCLES. NO DEFECTS NOTED.  IAW MM 32-31-00-720-801-A/500 VERFIED RIGGING OF FREEFALL SYS. IAW MM 32-35-00-820-801-A/500. FOLLOWING FIM, SHOWED FAILURE OF NLG UPLOCK BOX.   REMOVED & INSTALLED A NEW NLG UPLOCK BOX.  OPS & LEAK CHECKED GOOD. IAW MM 32-31-05-400-801-A. RIGGED FREEFALL SYS AFTER REPLACEMENT OF NLG UPLOCK BOX. IAW MM 32-35-00-820-801-A/500. PERFORMED FULL SYS HYD BLEEDING.

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