Narrative:

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.

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Original NASA ASRS Text

Title: 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.

Narrative: 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.

Data retrieved from NASA's ASRS site and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.