The Military Operations Area, the Word Hot, and Why You Can Legally Fly Straight Through One But Probably Shouldn't

SUMMARY: A Military Operations Area is legal to fly through under VFR even when hot - here’s why you probably shouldn’t, and how to decide.

Yes, you can legally fly through an active Military Operations Area (MOA) under Visual Flight Rules - no regulation prohibits it, and you need no one’s permission. But “legal” and “wise” are not the same thing. An MOA is where military aircraft train at high speeds and steep angles, so the real question isn’t can you transit one, it’s should you - and answering that well is what separates a sharp pilot from a lucky one.

What Is a Military Operations Area (MOA)?

A Military Operations Area is airspace set aside to separate military training from civilian IFR traffic. When an MOA is active - or “hot” - air traffic control will not route an instrument aircraft through it. Controllers vector IFR traffic around it, hold it out, or keep it above or below the block.

Inside that box, the military does the flying it can’t do in a straight line: air combat maneuvering, aerobatics, formation work, intercepts, steep climbs and descents, and high-speed passes.

On the sectional chart, an MOA is marked by a magenta hatched border with fuzzy magenta shading on the outside edge. The name is printed inside the boundary, while the altitudes, hours of operation, and controlling agency live in the airspace legend box along the chart margins. Get in the habit of reading that box instead of just eyeballing the magenta.

Is an MOA the Same as Restricted Airspace?

No - and confusing the two is one of the most common student pilot mistakes. They are completely different animals.

Restricted airspace (marked with blue hatching and an “R” before the number) can contain genuinely hazardous activity: artillery fire, aerial gunnery, and similar operations. When restricted airspace is hot, you do not enter without permission from the controlling agency. Period.

An MOA is not restricted airspace. There is no regulation prohibiting a VFR aircraft from flying through a hot MOA. You could cruise straight through the middle of an active MOA where two F-16s are turning and burning and not break a single Federal Aviation Regulation.

Here’s the quick hierarchy to remember:

• Prohibited areas: never enter, ever.
• Restricted areas (hot): no entry without permission - dangerous activities in progress.
• Warning areas (over water): similar hazards, treat with respect.
• MOAs: legal to fly through under VFR anytime. Legal, but not always wise.

Why Is Flying Through a Hot MOA Dangerous?

The hazard isn’t legal - it’s physical. Inside an MOA, military aircraft are not bound by the 250-knot speed limit the rest of us live under below 10,000 feet.

That limit comes from FAR 91.117, which caps aircraft at 250 knots indicated below 10,000 feet. For military aircraft operating in an MOA, that limit is waived. So a fighter crossing your flight path might be doing 400 to 450 knots.

Now do the closure math. If a fighter is coming at you head-on at 450 knots and you’re doing 110 knots, that’s 560 knots of closure - better than nine miles a minute, or roughly 800 feet every second.

From the moment that fighter is a speck you can actually see to the moment he fills your windscreen, you may have only three or four seconds. Military fighters are small, often painted gray against a gray sky, and their pilots are heads-down in a turning fight - not scanning for a Cessna.

At those speeds, “see and avoid” breaks down. Not because anyone is careless, but because human eyesight and reaction time were never built for nine miles a minute.

How Do I Find Out If an MOA Is Active?

Before you decide whether to transit, you need to know whether the airspace is hot. There are three layers of checking, and good pilots use all of them.

Step 1: Check the published schedule. Every MOA has scheduled hours printed in the airspace legend on the sectional, along with the controlling agency. You’ll see something like “intermittent by NOTAM” or specific hours such as Monday through Friday, 1400 to 2200 Zulu. If the MOA is only hot on weekday afternoons and you’re flying Sunday morning, your problem may have already evaporated.

Step 2: Check NOTAMs - don’t trust the printed schedule alone. Times change and exercises get added. MOA activity shows up in your standard weather and NOTAM briefing before the flight. Check it every time.

Step 3: Use Flight Following - this is the big one. When you request VFR flight following from ATC or a Flight Service Station, ask directly: “Is the such-and-such MOA active?” The controlling agency knows in real time, because they’re the ones keeping IFR traffic out. Better still, a controller can advise you of military activity as you approach - “traffic in the MOA, multiple fast-movers, altitude unknown.” That turns an invisible threat into a known one for the price of a radio call.

You can also contact the controlling agency directly on the frequency listed in the chart’s airspace information - often a military radar facility. Many will give you a real-time picture and, in some cases, traffic advisories while you transit. It isn’t required. It’s just smart.

Should I Fly Through an MOA or Go Around It? (Checkride Scenario)

Picture this: you’re a fresh private pilot with about 90 hours in your logbook. It’s a severe-clear Saturday and you’re flying your spouse two states over for lunch. You draw your line, and an MOA sits right on it - floor at 500 feet AGL, ceiling at 17,500 feet. Essentially the whole usable altitude block is inside it.

You have three legitimate options:

1. Go around it. Add ten minutes, fly the long way, and never think about it again. Nobody ever crashed by giving an MOA a wide berth. If the detour buys peace of mind, that’s cheap insurance.
2. Confirm it’s cold, then transit carefully. Check the schedule the night before, confirm no activating NOTAM in your morning briefing, pick up flight following anyway, ask the controller to confirm it’s cold, and keep your scan sharp inside it. Belt and suspenders.
3. It’s hot - reassess. If the controller confirms fast-movers working the airspace, the smart money goes around, climbs well over the top if the ceiling allows, or asks for a routing that keeps you clear. No lunch reservation is worth a mid-air with an F-16.

On a checkride, the examiner isn’t looking for “I can’t fly there” (wrong - you don’t understand the airspace) or “it’s fine, I’ll barrel through” (you don’t respect it). They want the pilot who says: “That’s an MOA. Here’s how I’d find out if it’s active, here are my options if it is, and here’s how I’d manage the risk if I chose to transit.” That’s the Airman Certification Standards airspace task in action - risk management, not rote knowledge.

What Else Should I Know About MOAs?

Think in three dimensions. An MOA has a floor and a ceiling, not just left-and-right boundaries. If the floor is 8,000 feet and you can comfortably fly your route underneath at 6,500 feet, you’re not in the MOA at all - you’re beneath it, usually in Class E or G airspace. Sometimes the simplest answer is to go under it, or over the top if the ceiling is low enough and your airplane will climb that high.

You still own see-and-avoid. Inside an MOA - cold or hot - you remain responsible for looking out the window. The airspace is joint use; the military hasn’t taken it over. There could be another civilian in there, a banner tow, or a glider. The MOA designation never relieves you of that fundamental responsibility.

The mature pilot doesn’t ask for permission they don’t need, and doesn’t blunder into a hot MOA at pattern speed while fighters maneuver at 450 knots overhead just because the reg book allows it. You check the schedule, check the NOTAMs, get flight following, ask the controller, keep your options open - over, under, or around - and keep your eyes outside. For deeper reading, the Aeronautical Information Manual covers special use airspace, and the FAA’s Airplane Flying Handbook covers the risk-management side.

Key Takeaways

• An MOA is not restricted airspace - it is legal to fly through under VFR anytime, even when hot, with no permission required.
• Inside an MOA, military aircraft are exempt from the 250-knot limit of FAR 91.117 and may fly 400–450 knots, producing closure rates around nine miles a minute - leaving as little as 3–4 seconds to react.
• Always check the published schedule, NOTAMs, and - most importantly - request VFR flight following to learn in real time whether an MOA is active.
• Your best options are almost always to go over, under, or around a hot MOA; think in three dimensions.
• You remain responsible for see-and-avoid inside an MOA at all times - it is joint-use airspace.