Minimum Safe Altitude(MSA)
Definition
The lowest altitude providing at least 1000 feet of obstacle clearance within a specified area, usually 25 nautical miles of a navigation aid. Published on instrument approach charts as an emergency reference.
Why Minimum Safe Altitude Matters for Pilots
Navigation concepts like Minimum Safe Altitude are tested on instrument rating exams and are essential for safe cross-country flying. Whether you are planning a VFR flight or navigating under IFR, a solid understanding of Minimum Safe Altitude ensures you can find your way accurately and efficiently.
Exam Tip
This concept is commonly tested in navigation-related questions on FAA and EASA exams. Make sure you can explain Minimum Safe Altitude in your own words for the oral exam. Practice applying this concept to real-world scenarios, not just memorizing the definition.
Related Terms
Share this with a fellow pilot
Related Content
Black Hole Approach
Aviation glossary definition and exam tips.
Constant Speed Propeller
Aviation glossary definition and exam tips.
Rejected Takeoff
Aviation glossary definition and exam tips.
ATPL Theory Complete Guide
Master every subject covered in airline pilot exams.
Free Practice Exam
Test your aviation knowledge with real exam questions.
Study Minimum Safe Altitude with Rotate
Unlock All Study Materials — $7.49/mo
1,800+ practice questions covering Minimum Safe Altitude and every exam topic. Flashcards, study guides, and progress tracking. 94% first-attempt pass rate.
Test your knowledge
Think you understand Minimum Safe Altitude? Challenge yourself with practice questions covering navigation and all other exam subjects.
Try Free Practice QuestionsMore Navigation Terms
VHF Omnidirectional Range(VOR)
A ground-based radio navigation aid transmitting radials in all directions. Pilo...
Distance Measuring Equipment(DME)
A radio navigation system that measures the slant range distance between an airc...
Non-Directional Beacon(NDB)
A ground-based radio transmitter that broadcasts on low/medium frequencies used ...
Instrument Landing System(ILS)
A precision approach system providing lateral guidance via the localizer and ver...