# SDR 3EJA202607270526

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 25, 2026
- Submitted: July 27, 2026
- Operation: Air carrier
- Aircraft: [N753JS](https://openairdocs.org/aircraft/N753JS), registered now
- Make and model: Cessna 525B
- Registry model: [Cessna 525B](https://openairdocs.org/model/cessna-525b) (OpenAirDocs)
- Aircraft serial: 525B0100
- Aircraft time: 5,213 hours, 3,506 cycles
- System (JASC): [5210 · Passenger/Crew Doors](https://openairdocs.org/jasc/5210)
- Part: Seal
- Condition: Leaking
- Location: Zone 800
- Stage of operation: CL
- How discovered: O
- Nature of condition: O
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/3EJA202607270526

## Discrepancy

UPON CLIMBING THROUGH FL310, WE HEARD LOUD WHISTLE FROM MAIN CABIN DOOR.  THERE WAS NO LOSS OF CABIN PRESSURE AND THE PRESSURE DIFFERENTIAL REMAINED AT 7.5 PSI AND 4,000 CABIN ALTITUDE.   PERFORMED CABIN PRESSURIZATION LEAK CHECK IAW AMM 21-30-TWO AREA THAT REQUIRED CLEANING AND SEALANT APPLIED AND DOOR SEAL ADJUSTMENT. PERFORMED REQUIRED CLEANING AND SEALANT APPLIED AND DOOR SEAL ADJUSTMENT. PERFORMED PRESSURIZATION TEST 3X.THE 2ND AND 3RD TIME TESTING RESULTS, PRODUCED NO NOISE IN CABIN AND THE DEFFERENTIALL PRESSURE WAS AT8.35. OK FOR SERVICE

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