# SDR USAASB98299

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: November 12, 1998
- Submitted: March 26, 2000
- Operation: Air carrier
- Aircraft: [N376US](https://openairdocs.org/aircraft/N376US), registered now
- Make and model: Boeing 737-3B7
- Registry model: [Boeing 737-3B7](https://openairdocs.org/model/boeing-737-3b7) (OpenAirDocs)
- Aircraft serial: 22955
- System (JASC): [2450 · AC Power Distribution System](https://openairdocs.org/jasc/2450)
- Part: Relay
- Part number: 91252ZC7C4001
- Condition: Failed
- Location: E/E Bay
- Stage of operation: CR
- Nature of condition: O
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/USAASB98299

## Discrepancy

CLT - FLT 272 - DURING CRUISE AT FL 330, THE NR 1 TRANSFORMER RECTIFIER UNIT CIRCUIT BREAKER TRIPPED SEVERAL TIMES AND WOULD NOT RESET.  CAPTAIN DECIDED TO DIVERT TO CLT WHERE THE FLIGHT LANDED WITHOUT INCIDENT.  NO EMERGENCY WAS DECLARED.  MAINTENANCE REMOVED AND REPLACED THE R3 TRANSFER RELAY.  GROUND RAN ENGINE.  OPS 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.