Narrative:

Flight was a primary training flight out of denver centennial airport. Flight was in the apa practice area southeast of the airport. Working our way northward during various maneuvers, we entered denver's class B airspace at approximately den R-145 at 20 NM DME at 8300 ft MSL. Shortly thereafter recognized position from ground reference and turned south leaving the class B, probable incursion was only a couple of mi. Ioc VOR recently decommissioned had been very useful for navigating in this area in aircraft without DME, as was the case here. Looking forward to the new VOR at limex intersection. Pilot will renew efforts at position awareness.

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Original NASA ASRS Text

Title: UNAUTH PENETRATION OF AIRSPACE - INSTRUCTOR WAS INVOLVED WITH HIS TRAINING AND BELATEDLY REALIZED HE HAD ENTERED THE TCA WITHOUT A CLRNC.

Narrative: FLT WAS A PRIMARY TRAINING FLT OUT OF DENVER CENTENNIAL ARPT. FLT WAS IN THE APA PRACTICE AREA SE OF THE ARPT. WORKING OUR WAY NORTHWARD DURING VARIOUS MANEUVERS, WE ENTERED DENVER'S CLASS B AIRSPACE AT APPROX DEN R-145 AT 20 NM DME AT 8300 FT MSL. SHORTLY THEREAFTER RECOGNIZED POS FROM GND REF AND TURNED S LEAVING THE CLASS B, PROBABLE INCURSION WAS ONLY A COUPLE OF MI. IOC VOR RECENTLY DECOMMISSIONED HAD BEEN VERY USEFUL FOR NAVIGATING IN THIS AREA IN ACFT WITHOUT DME, AS WAS THE CASE HERE. LOOKING FORWARD TO THE NEW VOR AT LIMEX INTXN. PLT WILL RENEW EFFORTS AT POS AWARENESS.

Data retrieved from NASA's ASRS site as of July 2007 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.