If given the clearance "HOLD EAST OF THE ABC VORTAC ON THE ZERO NINER ZERO RADIAL, LEFT TURNS," what pattern will you fly?

When given the clearance "HOLD EAST OF THE ABC VORTAC ON THE ZERO NINER ZERO RADIAL, LEFT TURNS," the correct holding pattern is a parallel pattern. In this case, the pilot is instructed to hold east of the VORTAC (Very High Frequency Omni-Directional Range Aid to Navigation) and track inbound on the specified radial (090 degrees) while executing left turns.

To further elaborate, in a parallel holding pattern, the aircraft flies outbound from the VORTAC. After reaching a designated point or time, the aircraft makes a left turn and tracks parallel to the holding radial back towards the VORTAC before turning left again to re-enter the hold. This method is often used when traffic or airspace considerations warrant it, allowing for better spacing and management.

The other holding patterns, such as a circle or teardrop, do not align with the specifics of the clearance given. A direct pattern would have the aircraft immediately reversing course upon reaching the designated holding fix; however, this does not match the requirement of making left turns and flying east of the VORTAC as specified in the instruction. Therefore, understanding the specifics of the instructions is vital to determine the appropriate holding pattern.