Minimum Safe Altitudes provide how many feet of terrain/obstacle clearance within how many nautical miles?

Minimum Safe Altitudes provide how many feet of terrain/obstacle clearance within how many nautical miles?

• A. 1000 feet within 25 NM
• B. 500 feet within 10 NM
• C. 2000 feet within 50 NM
• D. 100 feet within 5 NM

Answer: (A)

Minimum Safe Altitude ensures you have a guaranteed cushion above terrain and obstacles in the area around a navigation aid. The standard figure used on IFR charts is at least 1000 feet of obstacle clearance within 25 nautical miles of the facility. That means if you’re within 25 NM of the VOR or segment reference, you can descend to that altitude and still have a full 1000 feet of clearance above the highest obstacle in that circle. Other options either suggest too little clearance or apply a different radius, which doesn’t align with the published MSAs.

Minimum Safe Altitude ensures you have a guaranteed cushion above terrain and obstacles in the area around a navigation aid. The standard figure used on IFR charts is at least 1000 feet of obstacle clearance within 25 nautical miles of the facility. That means if you’re within 25 NM of the VOR or segment reference, you can descend to that altitude and still have a full 1000 feet of clearance above the highest obstacle in that circle. Other options either suggest too little clearance or apply a different radius, which doesn’t align with the published MSAs.