Maintain airspeed ±10 knots, altitude ±100 feet, selected headings within ±10°, and track a selected course, radial, or bearing within ¾-scale deflection of …

Instrument Rating Airplane ACS › III. Air Traffic Control (ATC) Clearances and Procedures › B. Holding Procedures

Maintain airspeed ±10 knots, altitude ±100 feet, selected headings within ±10°, and track a selected course, radial, or bearing within ¾-scale deflection of the course deviation indicator (CDI).