# SDR SWAA950738

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: November 18, 1995
- Submitted: March 26, 2000
- Operation: Air carrier
- Aircraft: N305SW
- Make and model: Boeing 737-3H4
- Registry model: [Boeing 737-3H4](https://openairdocs.org/model/boeing-737-3h4) (OpenAirDocs)
- Aircraft serial: 22945
- System (JASC): [2420 · AC Generation System](https://openairdocs.org/jasc/2420)
- Part: Relay
- Part number: 91252FC7C4001
- Condition: Malfunctioned
- Location: Nr 1 Buss
- 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/SWAA950738

## Discrepancy

EN ROUTE, NUMBER 1 TRANSFER BUSS CIRCUIT BREAKER TRIPPED.  RESET BREAKER, BUT TRIPPED AGAIN.  CABIN PRESSURE BEGAN TO CLIMB IN AUTO.  AIRCRAFT DESCENDED TO 10,000, DIVERTED TO DAL AND MADE AN UNEVENTFUL LANDING.  INSPECTED, REPLACED R3 RELAY AND PERFORMED BUSS TRANSFER CHECK.

---
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.