# Proposed AD FAA-2016-9054: Bombardier, Inc. Airplanes

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 2017-06-10
- Products: Bombardier
- Product type: Aircraft
- Action: Notice of proposed rulemaking (NPRM).
- Published: August 30, 2016, 81 FR 59539
- Comments due: October 14, 2016
- Became: [AD 2017-06-10](https://openairdocs.org/ad/2017-06-10)
- Docket: FAA-2016-9054 (https://www.regulations.gov/docket/FAA-2016-9054, where comments are filed)
- Project: 2016-NM-081-AD
- FR document: 2016-20691
- Official PDF: https://openairdocs.org/files/sha256/10/93/1093c8062e35f76628d948dec8f873c1abc5c1d556a43caebd20deb021072249 (from https://www.govinfo.gov/content/pkg/FR-2016-08-30/pdf/2016-20691.pdf)
- Federal Register: https://www.federalregister.gov/documents/2016/08/30/2016-20691/airworthiness-directives-bombardier-inc-airplanes
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/4449CB1CCC574EF08625801F00552805.0001
- Page: https://openairdocs.org/proposed/FAA-2016-9054

## Summary

We propose to adopt a new airworthiness directive (AD) for certain Bombardier, Inc. Model DHC-8-400 series airplanes. This AD was prompted by reports of interior emergency lights remaining ``ON'' following routine operational checks of the emergency light system. We are proposing this AD to require changing the wiring gauge for the affected emergency lights power supplies wiring to prevent overheating in the wires. Overheating can damage the wire insulation, causing a fire.

## Notices in this docket

- Aug 30, 2016: Notice of proposed rulemaking (NPRM). (first notice), FR document 2016-20691, comments due Oct 14, 2016 (https://www.federalregister.gov/documents/2016/08/30/2016-20691/airworthiness-directives-bombardier-inc-airplanes)

---
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.