dissenting.
For the reasons set forth in my dissenting opinions in Commonwealth v. White, 490 Pa. 179, 186, 415 A.2d 399, 402 (1980) and Commonwealth v. Williams, 490 Pa. 187, 194, 415 A.2d 403, 406 (1980), I adhere to the view that under the express language of the Crimes Code, 18 Pa.C.S. § 2501(a), a defendant is entitled upon request to a jury instruction on involuntary manslaughter. Because appellant’s timely request for an involuntary manslaughter instruction was im*354properly denied, judgment of sentence should be reversed and a new trial granted.
O’BRIEN, J., joins in this dissenting opinion.