# SDR USAASB99092

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 7, 1999
- Submitted: March 26, 2000
- Operation: Air carrier
- Aircraft: N435US
- Make and model: Boeing 737-4B7
- Registry model: [Boeing 737-4B7](https://openairdocs.org/model/boeing-737-4b7) (OpenAirDocs)
- Aircraft serial: 24557
- System (JASC): [2424 · AC Regulator](https://openairdocs.org/jasc/2424)
- Part: Gcu
- Part number: 948F4581
- Condition: Failed
- Location: Nr 2 Gen
- Part time: 34,179 hours
- Stage of operation: AP
- Nature of condition: B
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/USAASB99092

## Discrepancy

LGA - FLT 1290 - ON APPROACH TO LGA, DESCENDING THROUGH FL 180, CREW SMELLED A STRONG ELECTRICAL ODOR IN THE FLIGHT COMPARTMENT.  CAPTAIN DECLARED AN EMERGENCY.  FLIGHT LANDED WITHOUT INCIDENT AND TAXIED TO THE GATE.  IT WAS NOTED THAT THE NR 2 GENERATOR CONTROL BREAKER WAS TRIPPED.  MAINTENANCE FOUND THE NR 2 GENERATOR CONTROL UNIT WITH BURNED COMPONENTS. REMOVED AND REPLACED THE NR 2 GENERATOR CONTROL UNIT.  RESET BREAKER AND RAN ENGINES.  ACCOMPLISHED OPERATIONAL CHECK PER MM 24-21-81.  OPERATIONAL 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.