Normally, the airspace surrounding Class D airports extends from the surface up to a designated MSL altitude - usually about 2,500 feet AGL. Entry requirements: To enter Class D airspace, a pilot must contact the control tower and establish two-way radio communications prior to entering the airspace.
Embedded Data: A DVD-R disk (also applies to DVD+R) which still has space available. Data is burned onto the disk with a writing laser. DVD recordable and DVD rewritable refer to part of optical disc recording technologies.
1 In order to play a DVD-R, DVD+R, or DVDRW disc, a DVD player must be compatible with those recording formats. 2  Ensure that the recording speed used to create the disc is supported by the DVD player.