# SDR OEJA202606080001

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: June 4, 2026
- Submitted: June 9, 2026
- Operation: Air carrier
- Aircraft: [N75TG](https://openairdocs.org/aircraft/N75TG), registered now
- Make and model: Beech 400A
- Registry model: [Beech 400A](https://openairdocs.org/model/hawker-beechcraft-400a) (OpenAirDocs)
- Aircraft serial: RK28
- Aircraft time: 6,880 hours, 6,011 cycles
- System (JASC): [2910 · Hydraulic System, Main](https://openairdocs.org/jasc/2910)
- Part: Control Valve
- Part number: 5916001
- Condition: Sticking
- Location: Zone 400
- Part time: 6,880 cycles
- Stage of operation: CL
- 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/OEJA202606080001

## Discrepancy

ON TAKE OFF THE AIRCRAFT WAS CLIMING AND THE CREW HEARD A POPPPING NOISE AND THE CABIN BEGAN TO DROP, SO THE TURNED AROUND WENT BACK TO THE AIRPORT. THEY NOTIFED MAINTENANCE , PERFORMED SOME ENGINE RUNS AND THE AIRCRAFT PRESSURIZED ON THE GROUND , AIRCRAFT RETURNED  TO KPWA WITHOUT A INCIDENT.

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