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 reports that airplanes with a Class C cargo (baggage) compartment have liners that do not meet flammability requirements. This proposed AD would require replacing the existing cargo compartment liners with liners that comply. We are proposing this AD to prevent inadequate fire protection in the cargo compartment and consequent uncontrolled fire.