# SDR DXTA2026101210105

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: October 9, 2026
- Submitted: October 12, 2026
- Operation: Air carrier
- Aircraft: [N484QS](https://openairdocs.org/aircraft/N484QS), registered now
- Make and model: Emb EMB-505
- Registry model: [EMB EMB-505](https://openairdocs.org/model/embraer-executive-emb-505) (OpenAirDocs)
- Aircraft serial: 50500837
- Aircraft time: 1,840 hours, 1,448 cycles
- System (JASC): [3230 · Landing Gear Retraction/Extension System](https://openairdocs.org/jasc/3230)
- Part: Priority Valve
- Part number: 22170030403
- Part serial: 00496
- Condition: Defective
- Location: Zone 700
- Stage of operation: AP
- How discovered: O
- Nature of condition: J
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/DXTA2026101210105

## Discrepancy

REPEAT WRITE UP. ON APPROACH WE SELECTED LANDING GEAR DOWN AND A LOUD BANG NOISE HEARD & FELT FROM NLG. THE MLG INDICATORS TURNED GREEN WHILE NLG INDICATOR REMAINED YELLOW FOR A PERIOD LONGER THAN USUAL. EVENTUALLY IT TURNED GREEN. ABORTED APPROACH & EXECUTED A GO AROUND & SELECTED MLG UP AS NORMAL. NO ABNORMAL NOISE OR JARRING BANG FELT. CLIMBED TO ALTITUDE & DECIDED TO DIVERT BACK TO ORIGIN AIRPORT KDAL. ON SECOND APPROACH WHEN SELECTED MLG DOWN, WAS A SIGNIFICANTLY LESS INTENSE BANG (SEEMED MORE NORMAL) AND THE INDICATOR FOR NLG TURNED GREEN SOONER THAN FIRST APPROACH. A NORMAL LANDING WITH NORMAL BRAKING & TAXING WAS THEN SAFELY COMPLETED.  REPLACED PRIORITY VALVE. OPS CHKD GOOD. IAW AMM 32-31-00-720-801-A

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