# SDR UPS05845402

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: September 12, 2005
- Submitted: September 12, 2005
- Operation: Air carrier
- Aircraft: N703UP
- Make and model: Doug DC-8-71F
- Registry model: [Doug DC-8-71F](https://openairdocs.org/model/douglas-dc-8-71f) (OpenAirDocs)
- Aircraft serial: 45939
- System (JASC): [3417 · Air Data Computer](https://openairdocs.org/jasc/3417)
- Part: Adc
- Condition: Failed
- Location: Nr 1
- Stage of operation: CL
- How discovered: O
- Nature of condition: O
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/UPS05845402

## Discrepancy

INSPECTION TYPE:N/A ATB - AFTER T/O LOST NR 1 ADC, PULLED C/B COULD NOT RESTORE, XFRD TO NR 2 ADC ON CAPT SIDE.  ATB DUE TO SLIGHT ELEC BURNING SMELL.  REMOVED AND REPLACED AIR DATA COMP IAW MM 34-11-01-4 AND NR 1 ADC SELECT XFR RELAY IAW MM 20-50-16-2.  CHECK WIRE FROM C/B'S TO RELAY TO ADC NO DEFECTS NOTED.  AIR DATA COMPUTER & XFR RELAY NEEDS OPS CHECK.  PERFORMED ADC TEST PER MM 34-11-00.

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