# SDR CA980325043

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 9, 1998
- Submitted: January 19, 2001
- Operation: Air carrier
- Make and model: Lkheed 10113853
- Aircraft time: 50,644 hours
- Engine: Rroyce RB211524B402
- System (JASC): [2917 · Hydraulic Pressure Regulator, Main](https://openairdocs.org/jasc/2917)
- Part: Controller
- Condition: Failed
- Location: Hyd Pressure
- Stage of operation: CR
- 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/CA980325043

## Discrepancy

(CAN) A/C RETURNED DUE TO PRESSURIZATION PROBLEMS IN CRUISE. RAPID DESCENT INITIATED, AND PRESSURIZATION RECOVERED AT FL280, DESCENT STOPPED AT FL250 LANDED SAFELY. CABIN PRESSURE CONTROLLER REPLACED.

---
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.