# SDR SIMA20140605008

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: June 5, 2014
- Submitted: June 6, 2014
- Operation: Air carrier
- Aircraft: [N665BC](https://openairdocs.org/aircraft/N665BC), registered now
- Make and model: Emb EMB-145LR
- Registry model: [EMB EMB-145LR](https://openairdocs.org/model/embraer-emb-145lr) (OpenAirDocs)
- Aircraft serial: 145783
- Aircraft time: 26,905 hours, 22,773 cycles
- System (JASC): [3417 · Air Data Computer](https://openairdocs.org/jasc/3417)
- Part: Adc
- Condition: Malfunctioned
- Location: Cockpit
- Stage of operation: UK
- How discovered: O
- Nature of condition: J
- Precautionary procedure: B
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/SIMA20140605008

## Discrepancy

AT FL 360 CAPTAIN`S AIRSPEED INDICATED 244, FIRST OFFICER`S 248 & STANDBY 248.  BRIEFLY SPS ADV ON EICAS.  AT FL 350 CAPTAIN`S AIRSPEED 231 FIRST OFFICER`S 248 & STANDBY 244.  SOMEWHERE BETWEEN FL 350 & 310 CAPTAIN`S AIRSPEED & ALTITUDE DROPPED ABNORMALLY LOW.  CAPTAIN`S PFD ALSO SHOWED AMBER IAS THROUGHOUT THIS TIME.  INSPECTED PITOT DRAIN TUBES FOR WATER NONE FOUND.  R & R NR 1 ADC IAW 124 34-15-1.  PERFORMED OPERATIONAL TEST IAW 34-15-00-700-802 & PERFORMED NR 1 PITOT LEAK CHECK IAW 34-13-00-790-802.  ACFT IS COMPLIANT FOR CONTINUE CAT II OPERATION.

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