¶1Concurring Opinion by
¶2I concur in the result.
¶3In the instant case the Commonwealth was prepared to proceed to trial on November 18, 1974, well within the period then allowed under the transitional, 270-day provision of Rule 1100. The trial had to be rescheduled, however, because defense counsel was unavailable.
¶4I wish to make one further point. I do not read Commonwealth v. Shelton, supra, as standing for the proposition that delays occasioned by the administrative difficulties of the courts can never support a claim of due diligence under a Rule 1100 petition for an extension. To be sure, proof only that the court’s dockets are overcrowded will not constitute due diligence, since Rule 1100 contemplates that the accused should not suffer from general inadequacies in the criminal justice system. From time to time, however, an administrative quirk may arise and frustrate the Commonwealth’s attempt to begin trial within the period allowed under the Rule. Upon proof of such a peculiar circumstance by the district attorney, the hearing court in its discretion may well determine that due diligence was shown and grant a modest extension. For us to hold otherwise would, for many intents and purposes, read the “due diligence” exception out of Rule 1100.
¶5. Rule 1100(d) provides that the period of time within which the accused must be brought to trial is automatically extended to comprehend periods of time when defense counsel is unavailable. Practically speaking, however, it must be noted that defense counsel’s unavailability can cause a displacement of time much longer than the period during which he is unavailable. This is particularly true when counsel is unavailable on the day scheduled for a relatively complex trial. The Commonwealth must then attempt to reassemble its witnesses on a day mutually compatible (to the extent possible) to them and satisfactory to the calendar constraints of the court. In such circumstances, which are apparently present herein, the “due diligence” exception may be employed to accommodate these peculiar problems.