Summary
The FAA proposes to supersede Airworthiness Directive (AD) 2015-05-03, which applies to certain MHI RJ Aviation ULC Model CL-600- 2B19 (Regional Jet Series 100 & 440) airplanes. AD 2015-05-03 requires revising the maintenance or inspection program, as applicable, to incorporate new or revised maintenance requirements and airworthiness limitations, and incorporating structural repairs and modifications to preclude widespread fatigue damage (WFD). Since the FAA issued AD 2015- 05-03, the FAA has determined that new or more restrictive airworthiness limitations are necessary, as well as the corresponding structural repairs and modifications to preclude WFD. This proposed AD would require revising the existing maintenance or inspection program, as applicable, to incorporate new or more restrictive airworthiness limitations and would require incorporating structural repairs and modifications to preclude WFD. The FAA is proposing this AD to address the unsafe condition on these products.