Airworthiness Directives; Bombardier Model CL-600-2B19 (Regional Jet Series 100 & 440) Airplanes
airworthiness · Rule · Final rule; request for comments. · Published 2006-08-23 · Effective 2006-09-07 · 71 FR 49337
Document
Document number
E6-13831
Federal Register citation
71 FR 49337
Type
Rule
Action
Final rule; request for comments.
Category
airworthiness
Manufacturer
Bombardier Model CL-600-2B19 (Regional Jet Series 100 & 440)
Publication date
2006-08-23
Effective date
2006-09-07
FAA docket
Docket No. FAA-2006-25657
Abstract
The FAA is superseding an existing airworthiness directive (AD) that applies to certain Bombardier Model CL-600-2B19 (Regional Jet Series 100 & 440) airplanes. The existing AD currently requires inspecting contactors 1K4XD, 2K4XD, and K4XA to determine the type of terminal base plate, and applying sealant on the terminal base plates, if necessary. This new AD revises the effective date of the existing AD. This AD results from incidents of short circuit failures of certain alternating current (AC) contactors located in the avionics bay. We are issuing this AD to prevent short circuit failures of certain AC contactors, which could result in arcing and consequent smoke or fire.