# SDR FDEA201910072484

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: October 7, 2019
- Submitted: October 7, 2019
- Operation: Air carrier
- Aircraft: [N603FE](https://openairdocs.org/aircraft/N603FE), registered now
- Make and model: Doug MD-11F
- Registry model: [Doug MD-11F](https://openairdocs.org/model/mcdonnell-douglas-md-11f) (OpenAirDocs)
- Aircraft serial: 48459
- Aircraft time: 80,423 hours, 19,241 cycles
- System (JASC): [3416 · Altimeter, Barometric/Encoder](https://openairdocs.org/jasc/3416)
- Part: Adc
- Part number: 4059060901
- Part serial: 93030546
- Condition: Failed
- Location: Nr 2
- Stage of operation: CL
- How discovered: O
- Nature of condition: O
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/FDEA201910072484

## Discrepancy

DURING CLIMBOUT,  NOTICED FIRST OFFICER'S AIRSPEED AND  CAPTAIN AIRSPEED DID NOT MATCH,  DETERMINED F/O  INDICATOR WAS UNRELIABLE.  STANDBY AIRSPEED AND ALTIMETER  MATCHED THE CAPTAIN'S,   NR 2 ADC FAILED A FUNCTIONAL TEST,  R & R THE NR 2 ADC IAW MM 34-16-01-4.  OPS CHECKED NORMAL.

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