When may you use a teardrop entry into holding?

A teardrop entry into holding is typically utilized when an aircraft is in a specific position relative to the holding pattern and the inbound course. The correct choice pertains to being within the 70-degree offset sector. This means that when you are approximately 70 degrees or less from the holding course, it is appropriate to execute a teardrop entry.

This method takes advantage of the aircraft's relative position to the holding fix and allows for efficient maneuvering back towards the holding course with a standardized flight path. The maneuver is designed to maintain a consistent pattern and ensure safe re-entry into the holding pattern while minimizing the time spent maneuvering.

In contrast, the other options are not suitable for a teardrop entry. Being greater than 110 degrees would generally require a different entry method due to the larger turn needed; being within the 110-degree offset sector would typically allow for either a direct entry or a parallel entry, but not exclusively a teardrop; and being at holding altitude alone does not dictate entry type without considering the aircraft's position relative to the holding course.