# SDR 2004F00212

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 16, 2004
- Submitted: July 27, 2004
- Operation: Air carrier
- Aircraft: [N140CA](https://openairdocs.org/aircraft/N140CA), registered now
- Make and model: Lear 25B
- Registry model: [Lear 25B](https://openairdocs.org/model/gates-lear-jet-25b) (OpenAirDocs)
- Aircraft serial: 140
- System (JASC): [2130 · Cabin Pressure Control System](https://openairdocs.org/jasc/2130)
- Part: Flow Valve
- Part number: 238015611
- Condition: Inoperative
- Location: Cabin Pressure
- 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/2004F00212

## Discrepancy

DEPARTED DTW, EN ROUTE TO ADS, AFTER ABOUT 5 MINUTES AT FLIGHT LEVEL 390 THE ALTITUDE ALERTER CAME ON.  THE FLIGHT CREW FOLLOWED EMERGENCY PROCEDURES AND LANDED AT SUS WITHOUT INCIDENT.  INSPECTED AIRCRAFT AND FOUND FLOW CONTROL VALVE HAD GONE BAD.  REPLACED FLOW CONTROL VALVE ALL OPERATIONAL CHECKS AND TEST FLIGHT CHECK GOOD.  (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.