# SDR USAAD99142

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: September 29, 1999
- Submitted: March 26, 2000
- Operation: Air carrier
- Aircraft: N813US
- Make and model: Doug DC-9-81(MD-81)
- Registry model: [Doug DC-9-81(MD-81)](https://openairdocs.org/model/mcdonnell-douglas-dc-9-81-md-81) (OpenAirDocs)
- Aircraft serial: 48093
- System (JASC): [3460 · Flight Management Computing Hardware System](https://openairdocs.org/jasc/3460)
- Part: Circuit Breaker
- Part number: 15000532
- Condition: Failed
- Location: Epc Panel
- Stage of operation: CL
- Nature of condition: J
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/USAAD99142

## Discrepancy

BOS-ATL - FLT 1957 - PRIOR TO REACHING CRUISE THE CAPTAINS FLIGHT DIRECTOR FAILED, THE AUTO PILOT AND AUTO THROTTLE DISCONNECTED.  SWITCH 'A' FOR THE DFGS WOULD NOT RESET.  THE AIRCRAFT DIVERTED TO CLT AND LANDED WITHOUT INCIDENT.  MAINTENANCE REPLACED THE CIRCUIT BREAKER TO THE 'A' SWITCH FOR THE DFGS.  (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.