# SDR 9JLA201207172236

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: May 18, 2012
- Submitted: July 17, 2012
- Operation: Air carrier
- Aircraft: [N928WK](https://openairdocs.org/aircraft/N928WK), registered now
- Make and model: Amd FALCON50MYST
- Aircraft serial: 279
- Aircraft time: 5,029 hours, 3,526 cycles
- System (JASC): [3417 · Air Data Computer](https://openairdocs.org/jasc/3417)
- Part: Adc
- Part number: 8221036467
- Part serial: 3918
- Condition: Faulty
- Stage of operation: DE
- How discovered: O
- Nature of condition: J
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/9JLA201207172236

## Discrepancy

THE CREW REPORTED THAT NR 2 IAS INOPERATIVE WITH "Q" ANNUNCIATOR ILLUMINATED, GEAR WARING AND AUTO SLAT ANNUNCIATOR ILLUMINATED AND POWER LEVER ANGLES REDUCED. CREW REPORTS, Q LIGHT 180 KNOTS AND AUTO-SLAT LIGHT ABOVE 280 KNOTS. TROUBLESHOOTING IDENTIFIED THE NR 2 ADC AS BEING FAULTY. SN 3918 REMOVED, INSTALLED OVERHAULED PN 822-1036-467, SN 21LR.  PERFORMED RVSM SYS FUNCTIONAL AS REQUIRED.

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