; or (C) under contract or subcontract, produces components, parts, or systems of aircraft, aircraft engines, or appliances for inclusion in an aircraft, aircraft engine, or appliance. (4) COVID–19 public health emergency The term COVID–19 public health emergency means the public health emergency with respect to the 2019 Novel Coronavirus. (5) Senior executive employee The term senior executive employee means a chief executive officer, chief operating officer, or chief financial officer. (6) Total compensation level The term total compensation level means the level of total base compensation and benefits of an employee, excluding overtime and premium pay, as of April 1, 2020. 3. Payroll support extension program (a) In general The Secretary of the Treasury, in coordination with the Secretary of Transportation, shall establish a payroll support extension program to enter into agreements with aviation employers to provide up to a 50 percent share for the compensation of employees financially impacted by the COVID–19 public health emergency. (b) Procedures Not later than 10 days after the date of enactment of this Act, the Secretary shall establish, and make available to the public, procedures for application and minimum eligibility requirements for participation in the program established under subsection (a). (c) Compensation contributions Under the program established under this section, the Secretary may enter into agreements to provide up to a 50 percent contribution to ensure the total compensation level of the at-risk employee group of an aviation employer for any period beginning on or after April 1, 2020, and ending not later than April 30, 2022. (d) Eligibility The Secretary may enter into an agreement with an aviation employer under this section if the Secretary determines that— (1) the aviation employer establishes that economic conditions as of the date of the application for assistance under this section make necessary a permanent reduction or furlough of a portion of the workforce of such employer