# SDR USAAD97127

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 25, 1997
- Submitted: March 26, 2000
- Operation: Air carrier
- Aircraft: [N825US](https://openairdocs.org/aircraft/N825US), registered now
- Make and model: Doug DC-9-82
- Registry model: [Doug DC-9-82](https://openairdocs.org/model/mcdonnell-douglas-dc-9-82) (OpenAirDocs)
- Aircraft serial: 49237
- System (JASC): [2131 · Cabin Pressure Controller](https://openairdocs.org/jasc/2131)
- Part: Controller
- Part number: 21171802
- Condition: Faulty
- Location: Cabin
- Part time: 21,774 hours
- Stage of operation: CR
- Nature of condition: J
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/USAAD97127

## Discrepancy

CLT - FL 1090 - CAPTAIN REPORTED THAT HE HAD PRESSURIZATION CONTROL PROBLEMS.  FLIGHT RETURNED TO CLT AND LANDED WITH NO FURTHER INCIDENT.  THE AFT PRESSURIZATION CONTROLLER FAILED THE TAKEOFF TEST.  AFT CONTROLLER C/B WAS PULLED.  MAINTENANCE REPLACED THE AFT CONTROLLER.  (M)

---
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.