What is the guaranteed vertical clearance provided by the MSA?

The guaranteed vertical clearance provided by the Minimum Safe Altitude (MSA) is 1000 feet. This altitude is set to ensure that aircraft can operate safely in a given airspace, providing a buffer over terrain and obstacles. The MSA is designed to enhance safety during navigation, particularly when an aircraft may not be operating under radar coverage or is in an area of high terrain.

The 1000-foot clearance allows for ample vertical space to accommodate any elevation variations, such as mountains or buildings, and also accounts for potential variations in altimeter settings, ensuring pilots have a clear margin above the highest obstacles. This standard promotes safety by minimizing the risk of controlled flight into terrain while navigating in unfamiliar areas.