Airworthiness Directives; Bombardier Model CL-600-2B19 (Regional Jet Series 100 & 440) Airplanes
airworthiness · Rule · Final rule; request for comments. · Published 2005-11-14 · Effective 2005-11-29 · 70 FR 69073
Document
Document number
05-22309
Federal Register citation
70 FR 69073
Type
Rule
Action
Final rule; request for comments.
Category
airworthiness
Manufacturer
Bombardier Model CL-600-2B19 (Regional Jet Series 100 & 440)
Publication date
2005-11-14
Effective date
2005-11-29
FAA docket
Docket No. FAA-2005-22867
Abstract
The FAA is adopting a new airworthiness directive (AD) for certain Bombardier Model CL-600-2B19 (Regional Jet Series 100 & 440) airplanes. This AD requires revising the Airworthiness Limitations section of the Instructions for Continued Airworthiness of the Canadair Regional Jet Maintenance Requirements Manual by incorporating new procedures for repetitive detailed and special detailed inspections for cracking of the aft pressure bulkhead. This AD results from a fatigue test, which revealed cracking of the aft pressure bulkhead; subsequent in-service reports show that fatigue cracking has been found on other airplanes. We are issuing this AD to detect and correct cracking in the aft pressure bulkhead, which could result in reduced structural integrity and rapid decompression of the airplane.