Special Use Airspace, the P-R-MOA Stack on Every Sectional Cross-Country, and the One Phone Call That Separates a Legal Transit from a Certificate Action

The FAA designates six categories of Special Use Airspace (SUA), each with different rules about who can enter and when. Understanding the distinction between them - particularly the difference between legal access and safe access - is one of the most practical skills a cross-country pilot needs before leaving the ground.

What Are the Six Types of Special Use Airspace?

Prohibited Areas (P) are the most restrictive. The designation is the letter P followed by a number - P-56, P-40. Flight by civil aircraft is prohibited at all times, with zero exceptions. There is no clearance to request, no phone call to make, no authorization available. P-56 covers two zones over Washington, D.C.: P-56 Alpha over the National Mall and White House, and P-56 Bravo over the Naval Observatory and the Vice President’s residence. P-40 is Camp David. On a sectional, Prohibited Areas appear as a blue boundary with blue diagonal hatching inside. The only action required is routing around them.

Restricted Areas (R) are conditionally restricted. They carry the letter R followed by a number and are used for activities like artillery fire, aerial gunnery, and missile testing - hazards that make the airspace genuinely dangerous to non-participating aircraft. When that activity is occurring, non-participating civil aircraft cannot enter without an ATC authorization. When activity stops and the airspace is released, civilian traffic can transit freely under normal VFR rules.

Military Operations Areas (MOAs) are where most student pilots get confused. MOAs appear on sectionals with a magenta boundary, and the critical legal fact is this: VFR pilots are legally permitted to fly through an active MOA without any special authorization. A MOA is not a Restricted Area. No permission is required to enter one. But legal access and safe access are not the same thing.

Warning Areas (W) are located in international airspace, typically offshore along both coasts. Because they extend beyond three nautical miles from the U.S. coastline, the FAA lacks the legal authority to restrict flight there. The hazards inside - high-speed military training, low-level operations - can be identical to those in a MOA or Restricted Area. The FAA simply cannot call it a Restricted Area.

Alert Areas (A) carry no restriction at all. No authorization is required to enter one. They exist to flag airspace with high volumes of pilot training or unusual aerial activity, often near major flight training schools, military training areas, or parachute jump operations. The designation is a heads-up to scan aggressively, not a legal barrier.

National Security Areas (NSAs) are depicted on sectionals with a magenta boundary and the NSA label. The FAA requests that pilots voluntarily avoid them when practicable. That word - requests - matters. This is not a legal prohibition under normal circumstances. However, NSA airspace can be temporarily restricted by NOTAM when the security situation changes, at which point the request becomes a legal requirement with real enforcement consequences.

How Do I Know If a Restricted Area or MOA Is Active?

The sectional shows you where Special Use Airspace exists and what type it is. It does not tell you when it is active. That information lives in NOTAMs, weather briefings, and Flight Service.

The most reliable method is calling Flight Service at 1-800-WX-BRIEF. Tell the specialist your route, your planned departure time, and ask specifically about the status of any SUA areas you’ve flagged. They will confirm whether the area is scheduled to be active during your flight and whether it has been released. This call takes about two minutes and eliminates ambiguity.

NOTAMs from your standard preflight weather briefing - whether through Flight Service directly or a tool like ForeFlight - will surface scheduled SUA activations. Pay close attention to the timing windows. Compare them against your planned departure time and your estimated arrival in that area, accounting for actual cross-country pace.

The sectional chart block for each SUA area also lists the controlling agency with contact information. For some Restricted Areas, you can call the military directly to ask about current status.

What’s the Difference Between a MOA and a Restricted Area?

This is the question every checkride examiner will ask. The distinction comes down to legal access.

An active Restricted Area requires ATC authorization to enter. Flying through one without that authorization is a Federal Aviation Regulation violation and can result in certificate action.

An active MOA can be legally transited by a VFR pilot without any authorization. But when a MOA is active, military aircraft - fighters, trainers, attack aircraft - are operating inside that airspace at high speeds and in maneuvering flight. They are not on your frequency. A closing rate of 400 to 500 knots leaves very little time for see-and-avoid to function.

The practical answer: you can legally enter an active MOA, but you need to think carefully about whether you should. If the MOA is hot, either request VFR flight following from ATC - which puts radar coverage on both you and the military traffic - or route around it. The extra miles are not worth the exposure.

How Do I Plan a Cross-Country Route Through Special Use Airspace?

A reliable pre-flight workflow covers three steps.

Step 1 - Chart review. Before you fly, physically trace your entire route on the sectional and identify every SUA area within roughly ten to fifteen miles on either side. Note the type and designation number for each one. A P designation means you route around it - no further analysis needed. An R or MOA designation means you move to the next step.

Step 2 - Pull NOTAMs. Your standard preflight briefing will surface scheduled SUA activations. Check the timing of each activation against your planned departure window and your estimated time in that area.

Step 3 - Call Flight Service if anything is unclear. Dial 1-800-WX-BRIEF, state your route and planned departure time, and ask specifically about the areas you’ve flagged. If you’re routing near active MOA airspace, consider requesting VFR flight following before you enter. Contact the appropriate ARTCC or approach control, state your route, and ask for advisories. Flight following does not grant access to a Restricted Area, but it puts a controller’s radar on your flight and opens a channel to hear about fast-moving traffic you would otherwise never see coming.

What Else Should I Know About Reading SUA on a Sectional?

The chart legend gives you more than just the boundary line. Each SUA designation block includes the type of activity, the altitude band it covers, the times it is typically effective, and the controlling agency with contact information.

The altitude information matters. A MOA that tops out at 10,000 feet means nothing to you if you are planning to fly at 12,500 feet - the airspace is entirely below you. Know the floor and ceiling, not just the horizontal boundary lines.

Special Use Airspace is heavily concentrated in the South and Southeast, the Mountain West, and along both coastlines near major military installations. Pilots flying cross-countries in any of these areas will encounter SUA on nearly every flight.

What Should I Say on My Checkride About Special Use Airspace?

When an examiner places a sectional in front of you and points at SUA on your route, walk through your decision-making out loud - don’t just note that it exists.

For a Restricted Area: “I see R-4509, about twelve miles northeast of my course. During my preflight briefing I would pull the NOTAMs for this area, call Flight Service to confirm whether it’s scheduled to be active during my flight, and if it is active, I would either coordinate a route deviation or confirm with ATC whether it has been released.”

For a MOA: “This is a MOA, so I can legally transit it as a VFR pilot without authorization, but if it’s active I’m placing myself in a high-traffic military training environment. I would confirm the status with Flight Service before the flight, and if it’s hot, I would request flight following through the transit or route around it.”

The examiner is listening for you to demonstrate that you understand the difference between legal access and safe access. Those are not always the same thing, and that distinction is the core of what this material tests.

Key Takeaways

• Prohibited Areas are absolute - no authorization exists to enter them. Route around, every time.
• Restricted Areas are conditionally off-limits; confirm active status via NOTAMs and Flight Service before flight.
• MOAs do not require authorization to enter, but active MOA airspace contains high-speed military traffic - legal access is not the same as safe access.
• Always call 1-800-WX-BRIEF to confirm SUA status before any cross-country that routes near Restricted Areas or MOAs.
• The sectional shows location and type. NOTAMs and Flight Service tell you whether it’s active right now.