# SDR DXTA2026050507920

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: May 3, 2026
- Submitted: May 5, 2026
- Operation: Air carrier
- Aircraft: [N588QS](https://openairdocs.org/aircraft/N588QS), registered now
- Make and model: Cessna 560XL
- Registry model: [Cessna 560XL](https://openairdocs.org/model/cessna-560xl) (OpenAirDocs)
- Aircraft serial: 5605721
- Aircraft time: 16,364 hours, 12,366 cycles
- System (JASC): [5210 · Passenger/Crew Doors](https://openairdocs.org/jasc/5210)
- Part: Door Seal
- Part number: 952213
- Part serial: 0722
- Condition: Cut
- Location: Zone 800
- Stage of operation: CR
- How discovered: O
- Nature of condition: O
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/DXTA2026050507920

## Discrepancy

AT ALTITUDES ABOVE 16,500' AN ULTRA-HIGH PIERCING FREQUENCY SOUND CAN BE HEARD IN THE CABIN. TOUGH TO PINPOINT, BUT SEEMS TO COME FROM AREA AROUND MAIN CABIN DOOR. PRESSURIZATION SYSTEM SEEMED TO BE HOLDING UP.  IN DESCENT FROM HIGH ALTITUDE THE RATE CONTROL FLUCTUATED BETWEEN +2 AND -1.   REPLACED MAIN CABIN LOWER AFT DOOR ACOUSTIC SEAL WITH NEW DOOR SEAL IAW AMM 52-10-04. OPS AND LEAK CHECK GOOD. AIRCRAFT RESTORED TO ORIGINAL CONFIGURATION.

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