Widebody; Low Wing; 2 Turbojet Eng
Air Traffic Control Fully Certified
Air Traffic Control Time Certified In Pos 1 (yrs) 3
Communication Breakdown
ATC Issue All Types; Airspace Violation All Types; Deviation / Discrepancy - Procedural Published Material / Policy
Air Traffic Control Provided Assistance
Human Factors; Procedure
Local procedures allow for automatic jet departures off DFW to D10 departure radar positions with the exceptions of B744 (B747-400) and A343 (A340-300) type aircraft.  After obtaining a release; 10 miles in trail is required to be given with these 2 types of aircraft.   Aircraft X was cleared for take off and subsequently switched to departure.  Wake turbulence separation was applied and wake turbulence advisories issued.  The release for Aircraft X (A340-300) was not obtained from the departure position.The procedure to request a release from D10 for these type aircraft and to provide 10 miles in trail has been in the local order for several years.  Yet; no one knows why nor has an explanation to the procedure.  The procedure should be evaluated and discussed to assess its validity.
A DFW Front Line Manager (FLM) reports of a procedure that was not followed which led to a wake turbulence event and a procedural error involving a heavy aircraft. The FLM questions why this procedure is in place.