The vibrationally resolved laser-induced fluorescence spectra of the (A) over tilde (3)E<->(X) over tilde (3)A(2) system of CH3N radical were obtained experimentally. The dispersed spectra at different vibrationally excited states confirm that the system studied belongs to the CH3N radical. From the vibrational progressions in the excitation spectrum, following vibrational frequencies of the (A) over tilde (3)E state were determined : nu’(1)= 2943 cm(-1), nu’(2) = 1239 cm(-1), nu’(3) = 759 cm(-1), and nu’(5) = 1500 cm(-1). In addition, the lifetimes of the (A) over tilde (3)E state at four vibrational states (nu’(3) = 0, 3, 4, and 6) were measured, which are, respectively 292.8+/-1.2, 203.4+/-1.2, 188.2+/-0.5, and 157.2+/-0.5 ns at a total pressure of 1.7 Torr. Our experiments show that the (A) over tilde A (3)E state is bound at least up to 4800 cm(-1) and is relatively free from photochemistry.