c4aa4c14____Legal_Information_Institute_Flight_Profile_Distances_Meaning
[Distance] DJ [Unit] Feet [Meaning] 
Flyover Flight Path Distance. The distance from position D at which the helicopter is established on the flyover flight path passing over station A and continuing to position J at which the position of the helicopter need no longer be recorded.
14 CFR Part 36, Appendix H to Part 36 - Noise Requirements For Helicopters Under Subpart H | US Law | LII / Legal Information Institute
Meaning