# SDR ROSA2005040

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 15, 2005
- Submitted: August 26, 2005
- Operation: Air carrier
- Aircraft: N166DE
- Make and model: Doug DC-9-15F
- Registry model: [Doug DC-9-15F](https://openairdocs.org/model/mcdonnell-douglas-dc-9-15f) (OpenAirDocs)
- Aircraft serial: 47152
- Aircraft time: 46,553 hours, 59,882 cycles
- System (JASC): [2133 · Pressure Regulator/Outflow Valve](https://openairdocs.org/jasc/2133)
- Part: Actuator
- Part number: 54447211
- Part serial: 46244
- Condition: Failed
- Location: Outflow Valve
- Part time: 754 hours, 468 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/ROSA2005040

## Discrepancy

LOST CABIN PRESSURE AT 19,000 FEET, RETURNED TO AIRPORT.  REMOVED AND REPLACED OUTFLOW VALVE ACTUATOR AND CABIN PRESSURE CONTROLLER SIGNAL AMPLIFIER SYSTEM FUNCTION CHECKS SATISFACTORY AT THIS TIME.

---
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.