# Proposed AD FAA-2008-1210: Avidyne Corporation Primary Flight Displays (Part Numbers 700-00006-000, -001, -002, -003, and -100)

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 2009-05-05
- Products: Avidyne
- Product type: Appliance
- Action: Notice of proposed rulemaking (NPRM).
- Published: November 14, 2008, 73 FR 67429
- Comments due: January 13, 2009
- Became: [AD 2009-05-05](https://openairdocs.org/ad/2009-05-05)
- Docket: FAA-2008-1210 (https://www.regulations.gov/docket/FAA-2008-1210, where comments are filed)
- Project: 2008-CE-047-AD
- FR document: E8-27082
- Official PDF: https://openairdocs.org/files/sha256/60/16/601613a273405d6912f53fe55dddbf743c1cd16468792fd15c34374583d26f07 (from https://www.govinfo.gov/content/pkg/FR-2008-11-14/pdf/E8-27082.pdf)
- Federal Register: https://www.federalregister.gov/documents/2008/11/14/E8-27082/airworthiness-directives-avidyne-corporation-primary-flight-displays-part-numbers-700-00006-000--001
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/D9D2972A15545CED8625750100754E09.0001
- Page: https://openairdocs.org/proposed/FAA-2008-1210

## Summary

We propose to supersede Airworthiness Directive (AD) 2008-06- 28 R1, which applies to certain Avidyne Corporation (Avidyne) Primary Flight Displays (PFDs) (part numbers (P/Ns) 700-00006-000, -001, -002, -003, and -100) that are installed on airplanes. AD 2008-06-28 R1 currently requires you to do a check of the maintenance records and inspection of the PFD (if necessary) to determine if an affected serial number PFD is installed and incorporate (if necessary) operational limitations. Since we issued AD 2008-06-28 R1, Avidyne developed a factory service procedure that will correct the problems on these Avidyne PFDs and also factory serviced certain serial number PFDs. Consequently, this proposed AD would retain the actions from AD 2008- 06-28 R1 until the affected PFD is factory serviced; add the actions of a label or marking check, an air data system performance verification test, and (if necessary) replacement of the PFD and factory servicing of the failed PFD; and reduce theserial number applicability from that of AD 2008-06-28 R1. We are proposing this AD to prevent certain conditions from existing when PFDs display incorrect attitude, altitude, and airspeed information. This could result in airspeed/ altitude mismanagement or spatial disorientation of the pilot with consequent loss of airplane control, inadequate traffic separation, or controlled flight into terrain.

## Notices in this docket

- Nov 14, 2008: Notice of proposed rulemaking (NPRM). (first notice), FR document E8-27082, comments due Jan 13, 2009 (https://www.federalregister.gov/documents/2008/11/14/E8-27082/airworthiness-directives-avidyne-corporation-primary-flight-displays-part-numbers-700-00006-000--001)

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