Which of the following scenarios requires the use of R-177 airspace?

The scenario that requires the use of R-177 airspace is one involving small Unmanned Aerial Systems (sUAS) operating above 1,000 feet. R-177 is designated as restricted airspace, which is typically set aside for military operations or other activities that may pose a hazard to flight.

In the case of sUAS flying above 1,000 feet, the operation would fall under specific regulations that govern their use in areas where there may be active military operations or other restrictions that necessitate the use of restricted airspace. This ensures that these operations can occur safely and without interference from other aircraft.

Other scenarios, such as standard flight training, general passenger flights, and emergency landings, usually do not require restricted airspace. Standard flight training and general passenger flights are often conducted in controlled airspace where regulations allow for these activities without the need for military oversight or restrictions. Emergency landings are typically executed based on the closest available safe landing area, which may not necessarily be in restricted airspace.