FlyCurrentFLYCURRENT
IR.I.C.K1cFAA-S-ACS-8C · Nov 2023Knowledge

c. Preferred routes

ACS element text (the applicant demonstrates understanding of)

Route planning, including consideration of: c. Preferred routes

Bottom line

Preferred IFR routes are established between major terminals to guide pilots in planning their routes of flight. Preferred routes minimize route changes and aid in the orderly management of air traffic on Federal airways. Low and high altitude preferred routes are listed in the Airport/Facility Directory (A/FD).

Key numbers

Key numbers for c. Preferred routes
NumberWhat it means
FL 290 and above, within the conterminous United States and Canada, for NRP eligibilityNRP altitude

FAA references

  1. IFH ch. 1 (pp. 1-5–1-6) — FAA-H-8083-15B
  2. IFH ch. 10 (p. 10-2) — FAA-H-8083-15B
Members lesson

Build understanding you can use

Unlock the full lesson and continue studying this element.

  • Full teaching sections: What it is; Key points; Rules and numbers; How it is done
  • Check your understanding with answers you can reveal
  • Common mistakes paired with the FAA facts that correct them
View membership options