# SDR GTIA020221

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 8, 2002
- Submitted: April 8, 2002
- Operation: Air carrier
- Aircraft: [N810NK](https://openairdocs.org/aircraft/N810NK), registered now
- 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: 48015
- System (JASC): [3497 · Navigation System Wiring](https://openairdocs.org/jasc/3497)
- Part: Circuit Breaker
- Condition: Failed
- Location: Nav Transformer
- Stage of operation: IN
- How discovered: V
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/GTIA020221

## Discrepancy

FLL - NAV INST XFMR L C/B-F16 TRIPPED CAUSED 1, ALT WINDOWS TO GO BLANK 2 ART TO FIRE 3, NO AUTO THROTTLE.  FOUND NR 1 NAV INST TRANSFORMER C/B WEAK NO HOLDING.  REMOVED AND REPLACED THE 2A C/B IAW MM 31-15-01.  OP CHECK NORMAL.  PERFORMED OPERATIONAL CHECK OF AUTOTHROTTLE SYSTEM IAW MM 22-30-00 NORMAL.  NO FAULT INDICATION FOR ART SYSTEM IAW 73-20-00.  CHECK NORMAL.  (M)

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