This is an appeal by the Commonwealth of an order by the court below denying the Commonwealth’s application for an extension of time for commencement of trial and discharging the defendant. For the following reasons, we vacate the order of the court below and remand the case to the lower court.
*196
The defendant was charged with various offenses by a complaint filed on October 6, 1975. Under the mandate of Pa.R.Crim.P. 1100(a)(2),
1
the Commonwealth was required to bring the defendant to trial by April 3, 1976. On April 2, 1976, the Commonwealth, pursuant to Pa.R.Crim.P. 1100(c),
2
applied to the court below for an extension of time for commencement of trial. The Commonwealth predicated its request for a time extension
solely
upon a claim that despite its due diligence the Commonwealth was prevented
from
bringing the defendant to trial within the prescribed period because of the extensive trial schedule of the lower court.
3
Specifically, the Commonwealth alleged that: “It would have been a useless act to list this case prior to this time because of the case load and the unavailability of a sufficient number of trial slots.” Relying upon the opinion of this court in
Commonwealth v. Shelton,
*197
In
Commonwealth v. Mayfield,
The order of the court below is vacated, and the case is remanded to the lower court for proceedings consistent with this opinion.
Notes
. Pa.R.Crim.P. 1100(a)(2) provides that: “Trial in a court case in which a written complaint is filed against the defendant after June 30, 1974, shall commence no later than one hundred eighty (180) days from the date on which the complaint is filed.”
. Pa.R.Crim.P. 1100(c) provides that: “At any time prior to the expiration of the period for commencement of trial, the attorney for the Commonwealth may apply to the court for an order extending the time for commencement of trial. A copy of such application shall be served upon the defendant through his attorney, if any, and the defendant shall have the right to be heard thereon. Such application shall be granted only if trial cannot be commenced within the prescribed period despite due diligence by the Commonwealth. Any order granting such application shall specify the date or period within which trial shall be commenced.”
. At the hearing on its petition to extend, the Commonwealth sought to support its claim that it was unable to commence trial within the mandatory period by alleging additionally that it should receive credit for a period of thirty-five days expended before the district justice in completing the defendant’s preliminary hearing. We need not address the merits of this assertion because it was not raised in the Commonwealth’s petition to extend.
. In its brief before this court, the Commonwealth states that “. . . the case was certified to the Court Administrator as being ready for immediate trial on January 7, 1976.” (Appellant’s Brief, p. 2) Certainly, such certification would be relevant to the Commonwealth’s claim of due diligence. The record, however, is silent as to this point.
