# SDR SWIA200514786

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 20, 2005
- Submitted: March 29, 2005
- Operation: Air carrier
- Aircraft: [N918SW](https://openairdocs.org/aircraft/N918SW), registered now
- Make and model: Cndair CL6002B19
- Aircraft serial: 7645
- Aircraft time: 6,888 hours, 6,046 cycles
- System (JASC): [3417 · Air Data Computer](https://openairdocs.org/jasc/3417)
- Part: Adc
- Part number: 8220372445
- Part serial: 138RB
- Condition: Malfunctioned
- Location: Cockpit
- Part time: 50 hours, 46 cycles
- Stage of operation: CR
- How discovered: O
- Nature of condition: S, J
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/SWIA200514786

## Discrepancy

DURING FLIGHT FROM ORD, CAPTAIN`S ALTIMETER JUMPED ERRATICALLY BETWEEN 22.00 - 32.00.  UNABLE TO RESET WITH BARO KNOB TO PROPER SETTING.  DIVERT TO CAK.  REMOVED AND REPLACED NR 1 ADC IAW AMM 34-11-00.  OPERATIONAL CHECK GOOD.  A/C REMAINS CAT II & RVSM.

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