• NC Software is proud to announce the release of APDL - Airline Pilot Logbook version 10.0. Click here to view APDL on the Apple App store and install now.
  • Logbook Pro for Apple iOS version 8.1 is now available on the App Store. Major update including signature endorsements and dark/light theme support. Click here to install now.

Underground Pipeline on sectional?

RipCurl

surfing the midwest
Joined
Feb 17, 2004
Posts
197
Total Time
2500
I'm not sure this is the right forum for this, but I certainly still consider myself a student... so here goes:

I was looking at my Minneapolis sectional today and noticed that there is an underground pipeline depicted in Canada. It is located near the ND MN border. It heads southeast, but when it hits US soil, it disappears.

1. Why is an underground pipeline shown on an aeronautical nav chart?
2. Why is it shown in Canada, but not in the US?

Thanks
 

Avenger29

Member
Joined
Sep 19, 2005
Posts
23
Total Time
12hrs
An underground pipeline is shown b/c the ground above the pipeline is usually kept clear to avoid tree root problems- it produces a distinctive clearing route that can be followed by air. Probably shown on Canadian and not US charts because of regs.
 

Ralgha

Well-known member
Joined
Dec 29, 2003
Posts
539
Total Time
2900
They show it to make sure you know to miss it when crashing to avoid damaging the pipe.
 
Top