# Proposed AD FAA-2012-0861: Bombardier, Inc. Airplanes

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 2013-04-07
- Products: Bombardier
- Product type: Aircraft
- Action: Notice of proposed rulemaking (NPRM).
- Published: August 28, 2012, 77 FR 51946
- Comments due: October 12, 2012
- Became: [AD 2013-04-07](https://openairdocs.org/ad/2013-04-07)
- Docket: FAA-2012-0861 (https://www.regulations.gov/docket/FAA-2012-0861, where comments are filed)
- Project: 2012-NM-074-AD
- FR document: 2012-21102
- Official PDF: https://openairdocs.org/files/sha256/7d/4f/7d4ff7773ced1930b94d9bc4f17177243a0ed843c88f88bc9a6babd9aa71a4db (from https://www.govinfo.gov/content/pkg/FR-2012-08-28/pdf/2012-21102.pdf)
- Federal Register: https://www.federalregister.gov/documents/2012/08/28/2012-21102/airworthiness-directives-bombardier-inc-airplanes
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/B125E4877638B52D86257A6800465F44.0001
- Page: https://openairdocs.org/proposed/FAA-2012-0861

## Summary

We propose to adopt a new airworthiness directive (AD) for certain Bombardier, Inc. Model DHC-8-102, -103, -106, -201, -202, -301, -311, and -315 airplanes. This proposed AD was prompted by reports of the loss of the fixed frequency system, leading to the loss of power to the left and right buses and all systems serviced by these buses. This proposed AD would require modification of the wiring and changes to existing airworthiness limitations. We are proposing this AD to prevent loss of the fixed frequency system, which could lead to loss of a number of the pilot's and co-pilot's flight instruments, in addition to other avionics systems.

## Notices in this docket

- Aug 28, 2012: Notice of proposed rulemaking (NPRM). (first notice), FR document 2012-21102, comments due Oct 12, 2012 (https://www.federalregister.gov/documents/2012/08/28/2012-21102/airworthiness-directives-bombardier-inc-airplanes)

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