# SDR 3EJA2025100700825

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: September 8, 2025
- Submitted: October 7, 2025
- Operation: Air carrier
- Aircraft: [N739JS](https://openairdocs.org/aircraft/N739JS), registered now
- Make and model: Cessna 525B
- Registry model: [Cessna 525B](https://openairdocs.org/model/cessna-525b) (OpenAirDocs)
- Aircraft serial: 525B0045
- Aircraft time: 12,631 hours, 8,659 cycles
- System (JASC): [5210 · Passenger/Crew Doors](https://openairdocs.org/jasc/5210)
- Part: Seal
- Condition: Failed
- Location: Zone 800
- Part time: 12,631 hours, 8,659 cycles
- Stage of operation: CL
- How discovered: O
- Nature of condition: J
- Precautionary procedure: B, A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/3EJA2025100700825

## Discrepancy

CLIMBING OUT OF FL350 TO FL430 A LOUD BANG AND AUDIBLE HIGH PITCHED WHISTLE OCCURRED.   R & R SECONDARY DOOR SEAL. R & R GEAR LOGIC 1 PCB

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