Action
Notice of proposed rulemaking (NPRM).
Summary
We propose to adopt a new airworthiness directive (AD) for certain Bombardier, Inc. Model CL-600-2B19 (Regional Jet Series 100 & 440) airplanes. This proposed AD was prompted by a revision to the airplane airworthiness limitations to introduce more stringent inspection requirements on certain affected components. This proposed AD would require revising the maintenance program to incorporate revised tasks specified in certain temporary revisions. We are proposing this AD to detect and correct fatigue cracking in the affected components and consequent loss of structural integrity.