Stage 5 Noise Rules Go Into Effect

A more stringent noise standard for newly certified jet airplanes goes into effect starting Dec. 31, 2020 for applications for new aircraft with an mtow of  less than 121,254 pounds. Last December, the revised requirements began to apply to new applications for aircraft with mtow of 121,254 pounds or more. The agency stressed that the rule, known as Stage 5, is “intended only for new aircraft and is not signaling the start of an action aimed at phasing out the existing noise standards that apply to the production or operation of current models.”