# SDR VNAA2020031331101

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 11, 2020
- Submitted: March 13, 2020
- Operation: Air carrier
- Aircraft: [N592NN](https://openairdocs.org/aircraft/N592NN), registered now
- Make and model: Cndair CL6002D24
- Aircraft serial: 15404
- Aircraft time: 9,502 hours, 8,784 cycles
- System (JASC): [3417 · Air Data Computer](https://openairdocs.org/jasc/3417)
- Part: Adc
- Part number: 8220372638
- Part serial: 41HDVT
- Condition: Failed
- Location: Cockpit
- Part time: 8,733 hours, 8,004 cycles
- Stage of operation: AP
- How discovered: O
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/VNAA2020031331101

## Discrepancy

BOTH ADC'S FAIL ON APPROACH. REMOVED AND REPLACED ADC 1 IAW CRJ 900 AMM 34-13-01-000/400-801-A01-PSA, ADC OPS CHECK GOOD AT THIS TIME. REMOVED AND REPLACED OF THE SOURCE SELECTOR CONTROL PANEL IAW CRJ 900 AMM 34-25-07-000/400-801, SOURCE SELECTOR PANEL OPS CHECK GOOD AT THIS TIME. REMOVED AND REPLACED AIR DATA REFERENCE PANEL IAW CRJ 900 AMM 34-13-04-000/400-801, AIR DATA REFERENCE PANEL OPS CHECK GOOD AT THIS TIME.

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.