Section 25.1145 - Ignition switches(a) Ignition switches must control each engine ignition circuit on each engine.(b) There must be means to quickly shut off all ignition by the grouping of switches or by a master ignition control.(c) Each group of ignition switches, except ignition switches for turbine engines for which continuous ignition is not required, and each master ignition control must have a means to prevent its inadvertent operation.Doc. No. 5066, 29 FR 18291, Dec. 24, 1964, as amended by Amdt. 25-40, 42 FR 15044 Mar. 17, 1977