If you've ever stepped inside a Skymaster, you know the Cessna 337 interior is a bit of a departure from your average light twin. It's got that distinctive "push-pull" engine configuration, which does more than just make it easier to fly on one engine—it completely changes how the cabin feels compared to a Baron or a Seneca. Because there isn't an engine sitting on each wing, you get a much better view out the side windows, and the entry isn't quite the same climb-over-the-wing shuffle you'll find in other models.
But let's be honest: many of these planes are still rocking the same aesthetic they had when they rolled off the line in the 1960s or 70s. We're talking about cracked plastic, fading velour, and that specific "old airplane" smell that's a mix of fuel, sweat, and decades-old foam. If you're looking to buy one or you're currently flying one that needs some love, the interior is usually the first place where you can really make the plane feel like your own.
The Layout and Why It Matters
The first thing you notice about the Cessna 337 interior is the visibility. Since it's a high-wing aircraft, you aren't staring at a massive slab of aluminum when you look out the window. This gives the cabin an airy, open feel that's hard to beat. Most 337s are set up in a six-seat configuration, though "six seats" is a bit of a generous term if you're planning on carrying six full-grown adults.
In reality, it's more of a 2+2+2 setup where that back row is really meant for kids or very short hops. Most owners end up pulling those rear seats out entirely to make room for baggage. Without those back seats, the cabin feels massive. You've suddenly got a bush-plane amount of room for gear, coolers, or whatever else you're hauling to a weekend destination.
The seating position itself is fairly upright, which is great for long-distance comfort. You don't feel like you're sitting on the floor with your legs straight out in front of you. However, the width is where you'll feel the squeeze. It's cozy. If you're flying with a co-pilot who has broad shoulders, you're going to be rubbing elbows. That's just the nature of the beast with these legacy Cessna designs.
Dealing with the Noise Factor
We can't talk about the cabin experience without addressing the elephant in the room: the noise. Because you have an engine literally pulling you and another one pushing you from right behind the rear bulkhead, the Cessna 337 interior can be a loud place to spend four hours.
The front engine vibrates through the firewall, and the rear engine creates a high-frequency drone that can be exhausting if your insulation is shot. When people talk about "refreshing" their interior, they often focus on the leather and the carpet, but the real pros focus on soundproofing. Modern acoustic foam and vibration-dampening materials like Soundguard or specialized insulation kits can make a night-and-day difference. If you can drop the decibel level by even a small margin, you'll arrive at your destination feeling way less fatigued.
Modernizing the Materials
If you're looking at an original 1970s Cessna 337 interior, you're probably looking at a lot of Royalite. That's the thin, vacuum-molded plastic that covers the pillars, the window surrounds, and the headliner. Over fifty years, that stuff becomes incredibly brittle. You touch it to adjust a vent, and crack—you've got a new project on your hands.
A lot of owners are moving away from replacing old plastic with new plastic. Instead, they're wrapping those panels in synthetic leathers or Ultra-leather. It looks a thousand times more premium, it doesn't crack, and it actually helps with that sound dampening I mentioned earlier. Plus, it smells better.
Seating and Upholstery Choices
When it comes to the seats, you have a few ways to go. You can do a basic re-cover, but if you're going to spend the money, you should really look at the foam. The original springs and foam are likely sacked out. High-quality memory foam or multi-density layers can turn a "two-hour seat" into a "five-hour seat."
Leather is the gold standard for a reason—it's durable and easy to clean—but don't sleep on high-end fabrics or sheepskin inserts. Sheepskin is one of those things that looks a bit "old school," but for actual flying comfort in the summer or winter, it's hard to beat. It breathes better than leather and doesn't get scorching hot when the plane has been sitting on a ramp in Vegas for three hours.
Flooring and Carpeting
The carpet is usually the grossest part of a legacy Cessna 337 interior. It's seen decades of spilled coffee, muddy boots, and maybe a bit of oil from a leaky seal. Replacing the carpet is one of the easiest ways to transform the look.
If you use the plane for more "utility" purposes—maybe you're landing on grass strips or taking the dog along—consider going with a vinyl floor or a heavy-duty utility carpet. It's much easier to sweep out than a deep-pile wool carpet that holds onto every piece of dirt like a souvenir.
The Instrument Panel and Lighting
While the seats and walls are important, the pilot spends 90% of their time looking at the panel. A modern Cessna 337 interior usually involves a "panel flip" at some point. Getting rid of the old plastic overlays and installing a clean, powder-coated metal panel changes the whole vibe of the cockpit. It makes it feel like a modern machine rather than a vintage relic.
Lighting is another huge factor. The old post lights or those dim overhead "eyeball" lights are pretty miserable for night flying. Switching to LED strip lighting under the glare shield provides a nice, even glow across the instruments without ruining your night vision. You can even add small LED accent lights in the footwells or the baggage area, which makes a world of difference when you're trying to find a flashlight or a bag in the dark.
DIY vs. Professional Shops
This is the big question for any owner: do you do it yourself or send it to a shop? Because the Cessna 337 interior is relatively straightforward, a lot of people are tempted to go the DIY route. You can buy pre-cut carpet kits and seat covers that make the process manageable.
However, there's a massive "gotcha" here, and that's the FAA. Anything you put in that airplane has to meet specific burn-rate requirements. You can't just go to a local fabric store, pick out some nice-looking leather, and staple it to the walls. You need the "burn certs" to keep the plane legal and, more importantly, to keep you safe if things ever get hairy.
Professional shops are expensive—you could easily spend $15,000 to $30,000 on a full, high-end interior—but they handle the paperwork, the specialized foams, and the tricky fitting around the door seals. If you're handy and have a good relationship with your A&P mechanic, you can do a "supervised" install to save some cash, but don't underestimate the amount of work it takes to make it look right.
Why We Love This Space
At the end of the day, the Cessna 337 interior is just a cool place to be. It's a "pilot's airplane." You have that great view, the unique sound of the twin engines working together, and a cabin that feels more like a small SUV than a cramped metal tube.
Whether you're keeping it purely functional for weekend adventures or turning it into a mini-corporate jet with leather and touchscreens, the Skymaster cabin is a versatile canvas. It's one of the few planes where you can actually see the world you're flying over without a wing or an engine block getting in the way, and that alone makes any interior upgrade worth the effort. There's nothing quite like leveling off at 8,000 feet, pulling the power back, and enjoying the view from a cabin that feels fresh and modern.