Airworthiness Directives; Bombardier, Inc. Airplanes
airworthiness · Rule · Final rule. · Published 2013-08-30 · Effective 2013-10-04 · 78 FR 53633
Document
Document number
2013-19830
Federal Register citation
78 FR 53633
Type
Rule
Action
Final rule.
Category
airworthiness
Publication date
2013-08-30
Effective date
2013-10-04
FAA docket
Docket No. FAA-2012-1003
Abstract
We are adopting a new airworthiness directive (AD) for certain Bombardier, Inc. Model DHC-8-400 series airplanes. This AD was prompted by reports of advance pneumatic detectors (APDs) for engine fire/ overheat detector assemblies failing to reset after activation due to permanent deformation of the detector switch diaphragm after being exposed to high temperatures. This AD requires replacing all three APDs with new detector assemblies. We are issuing this AD to prevent a continued engine fire indication in the cockpit after the actual fire has been extinguished, which is misleading and might influence the pilot to conduct a potentially hazardous "off-airport" landing.