***Link*** :: [IFR Muscle Builders](https://www.flyingmag.com/ifr-muscle-builders/) ***Description*** :: `= this.link` ***Author*** :: [[IFR Magazine]] #### Key Quotes * Beyond needle-ball-and-airspeed, students had to learn the attitude and heading indicators, compass, and clock and fuse them into what became attitude instrument flying * To stimulate the development of a composite scan, they developed Patterns A, B, and the vertical S #source