Summary
We propose to adopt a new airworthiness directive (AD) for certain Bombardier, Inc., Model CL-215-6B11 (CL-415 Variant) airplanes. This proposed AD was prompted by a report indicating that an oxygen bottle was found loose while the clamp strap was in the locked position. This proposed AD would require modification of the clamp strap and installation of additional shims, as applicable, to the flight crew's oxygen bottle retaining structures. We are proposing this AD to address the unsafe condition on these products.