# Proposed AD FAA-2015-4809: Airbus Defense and Space S.A. (Formerly Known as Construcciones Aeronauticas, S.A.) Airplanes

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 2016-07-18
- Products: Airbus Defence and Space
- Product type: Aircraft
- Action: Notice of proposed rulemaking (NPRM).
- Published: November 12, 2015, 80 FR 69898
- Comments due: December 28, 2015
- Became: [AD 2016-07-18](https://openairdocs.org/ad/2016-07-18)
- Docket: FAA-2015-4809 (https://www.regulations.gov/docket/FAA-2015-4809, where comments are filed)
- Project: 2015-NM-012-AD
- FR document: 2015-28560
- Official PDF: https://openairdocs.org/files/sha256/58/7b/587b417ddaa435b46db04877ee1790b0db2d5cd934127ac51df778f82d2e5fdd (from https://www.govinfo.gov/content/pkg/FR-2015-11-12/pdf/2015-28560.pdf)
- Federal Register: https://www.federalregister.gov/documents/2015/11/12/2015-28560/airworthiness-directives-airbus-defense-and-space-sa-formerly-known-as-construcciones-aeronauticas
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/06847EF56A59C42386257EFB00567F61.0001
- Page: https://openairdocs.org/proposed/FAA-2015-4809

## Summary

We propose to adopt a new airworthiness directive (AD) for certain Airbus Defense and Space S.A. (formerly known as Construcciones Aeronauticas, S.A.) Model CN-235-200 and CN-235-300 airplanes. This proposed AD was prompted by reports of false engine fire warning events, which consequently led to engine in-flight shut down. This proposed AD would require modification of the location and routing of the engine fire detection system. We are proposing this AD to prevent unnecessary engine in-flight shut down, which could result in reduced controllability of the airplane.

## Notices in this docket

- Nov 12, 2015: Notice of proposed rulemaking (NPRM). (first notice), FR document 2015-28560, comments due Dec 28, 2015 (https://www.federalregister.gov/documents/2015/11/12/2015-28560/airworthiness-directives-airbus-defense-and-space-sa-formerly-known-as-construcciones-aeronauticas)

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