Federal Aviation Regulation Ninety-One Point One Fifty-Nine, VFR Cruising Altitudes, and the East-Is-Odd Rule That Keeps Two Airplanes From Meeting Head-On at the Same Number
FAR 91.159's east-is-odd rule sets VFR cruising altitudes by magnetic course, keeping opposing traffic 1,000 feet apart above 3,000 AGL.
Pattern