Which entry method requires the aircraft to be within the 110 degree offset sector?

The correct choice is based on the fact that the parallel entry method requires the aircraft to be within a specific sector—specifically, the 110-degree offset sector—before making the turn into the holding pattern. In a parallel entry, the pilot flies parallel to the outbound leg of the holding pattern before turning back to intercept the inbound course after completing a suitable distance from the hold.

This method emphasizes the need to ensure that the aircraft is appropriately aligned with the holding pattern to facilitate a smooth entry. By being within this offset sector, the pilot can maintain optimal situational awareness and effectively manage the aircraft’s alignment in relation to the holding pattern’s entry requirements.

Other entry methods, like teardrop and direct entry, have different geometries and do not depend on this particular requirement of being situated in the 110-degree offset sector.