# SDR CA180822009

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 20, 2018
- Submitted: August 18, 2020
- Operation: General aviation
- Make and model: Frchld SA227DC
- Aircraft time: 28,823 hours
- Engine: Garrtt TFE33112UHR
- Propeller: Mcauly 4HFR34C652
- System (JASC): [2131 · Cabin Pressure Controller](https://openairdocs.org/jasc/2131)
- Part: Controller
- Part number: 10234010
- Condition: Out Of Adjust
- Location: Cabin Pressure
- 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/CA180822009

## Discrepancy

(CAN) PILOT REPORTED THAT THEY WERE HAVING CABIN PRESSURIZATION ISSUES, WHICH CAUSED THE UN-CONTROLLED DE-PRESSURIZATION.  THIS CAUSED THEM TO INITIATE AN EMERGENCY DECENT.  PRESSURIZATION SYSTEM WAS MEL`D ONCE ON THE GROUND AND THE AC FLEW UNPRESSURIZATION.  WHEN IT GOT TO HOME BASE MAINTENANCE FOUND MOISTURE IN THE AIR-STAIR DOOR SEAL LINE, WHICH WAS REMOVED AND ADJUSTED.  THE CABIN DOOR AIR SWITCH AND SUBSEQUENT FLIGHT TEST COMPLETED OK. (TC# 20180822009)

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.