IFR Enroute High Altitude Charts (Conterminous U.S. and Alaska) are designed for navigation at or above 18,000 ft MSL. This four color series includes:

- Jet Route Structure
- VHF radio aids to navigation (frequency, ID, channel, geographic coordinates)
- Selected airports
- Reporting Points
- Revised every 56 days

For publication dates and validity please check the link below.