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Cessna 185


The airplanes we own say more about us than we'd probably like to admit. Some owners choose airplanes that allow them to fly close to the earth — aerial pick-up trucks with big engines and little tailwheels, caked with mud; others must own the latest low-profile, high-flying plastic airplane with fine Corinthian leather and a glass instrument panel. I'm a mud-and-low-altitude kind of owner.

Having been the proud caretaker of an ancient Cessna 180 for several years (See " Jack of All Trades," November 1993 Pilot), I began to want more: more payload, more IFR range, and better performance from high-altitude strips. A little more speed wouldn't hurt, either. After an agonizing and wide-ranging search, I finally set my sights on the Cessna 185 Skywagon. It offered everything that I loved about the 180 — and more.

Now, when people (many of them professional pilots) ask what kind of airplane I own, their reaction is often "Ahh, a 185; that's my dream airplane." Why is that? What is it about the 185 that elicits such longing?

Well, the airplane will go just about anywhere you have the guts to take it — and on those excursions will carry most of what you own. Skywagons haul the oil barrels, hunters, machinery parts, and caskets on work days; or the camping gear, cooler, and mountain bikes on days off. This aerial pick-up comfortably hauls nearly three quarters of a ton of stuff; in my airplane I can fill all four seats with 200-pounders, add a full tank of gas (88 gallons), and load more than 175 pounds of baggage. Airplanes able to do that comprise a very short list.

Although certified as a six-place airplane, few 185s have all six seats installed. Most owners have removed the third-row "kiddie seat" bench, suitable only for very short people and very short sit times — they're miserable seats for normal-sized folks.

The Cessna 185 first appeared in 1961 as an evolutionary follow-on to the popular 180. It's basically a beefed-up 180 with a 260-horsepower fuel-injected Continental IO-470. Adding 30 more horses to the proven design immediately won the attention (and affection) of charter operators needing additional power for floatplanes, high-altitude flight, and heavy hauling.

Within a couple of years of its introduction, Cessna offered Continental's 300-hp (285 hp continuous) IO-520 as an option and, not surprisingly, the deeper-voiced 185 quickly eliminated its weaker sibling on the Pawnee assembly line in Wichita. For the most part, my 1979 model 185 has proven to be a gas 'n go airplane. It's a simple, rugged design that requires very little unscheduled maintenance. I've found the injected engine even more reliable than the carbureted Continental in the 180 I used to own — and fuel injection eliminates the threat of carburetor ice, always a prime consideration. The only downside is starting the injected engine and 28-volt system with a dead battery; it's a lot easier to prop a carbureted engine — and finding a 12-volt truck, tractor, or automobile to jump-start a 12-volt airplane in the boondocks could mean the difference between go and no go.

Although many Skywagons are equipped with a three-blade prop, most floatplane operators opt for the 88-inch two-blade propeller; its greater disk area provides more thrust for pulling a heavily laden floatplane out of the water. But the blat of those long, supersonic prop tips on takeoff is downright obnoxious. My 84-inch three-blade prop, which became standard in the last years of production, is quieter, although it still draws a lot of attention when I leave my home airstrip. If load and conditions allow, I pull the prop back below the 2,850-rpm maximum to be a better neighbor.

The Skywagon is not a hard airplane to fly, but it does require the usual attention of any fairly heavy taildragger. It feels a bit more truck-like than the 180; the ailerons are a little heavier, as is the elevator because of its added downspring. Control feel is not so lethargic as to make it unpleasant, though. The Skywagon is Cessna-stable, although laterally it's a bit more neutral than, say, a 172 or 182. These characteristics subtly challenge you to fly it, part of the airplane's allure. Remember, this is a pick-up, not a sports car.

I regularly see 150 knots true airspeed with my airplane at about 75-percent power, although that is a bit above book promises. For example, the pilot's operating handbook says that on a standard day at 8,000 feet, the airplane will true at 141 knots on 14.6 gallons per hour at 70-percent power. With 88-gallon (84 usable) wet wings, I plan on six hours to dry tanks; real-world range with no wind is about 600 to 700 nautical miles with reserve and alternate fuel. There are several supplemental type certificates (STC) available to add more fuel. A time or two I have longed for these range extenders when the weather is ugly and alternates are distant.

Many STCs are available to increase the 185's performance and utility. One allows the installation of larger 8.50 tires, another is for replacement of the engine with the 300-hp Continental IO-550, and one is a "speed mod" with fairings and fillets. As mentioned, there are a couple of internal fuel tank options; there also is a cargo door modification, and even a turbo normalizer that claims to raise the cruise speed of the Skywagon to 185 knots at high altitude.

Although little known, Cessna built a special Skywagon between 1967 and 1973 for service in Southeast Asia. Called the U-17B, it was modified to carry four rockets under each wing and a gunsight on the cowling. Only 215 of the type were built; few survive today in this country.

In the last few years of manufacture, the Skywagon production numbers dwindled to a trickle: only eight airplanes were made in the next-to-last year; and 23 in 1985, the final year of production.

At a time when people are buying four-wheel-drive and sport/utility vehicles in record numbers (even if few will ever actually get their knobby tires dirty), the 185 seems to make a lot of sense. The Skywagon's pragmatic balance of capabilities, lack of complexity, and its record of doing the impossible — of getting the job done, come hell or high gross weights — will win lots of friends.

See original article

Performance Summary

The 185 is an all metal, six place, high wing, single engine airplane equipped with conventional landing gear.

This airplane must be operated as a Normal Category Airplane, Aerobatic maneuvers, including spins, are prohibited. The airplane is approved for day and night VFR/IFR when in accordance with F.A.R. 91 or F.A.R. 135.
The aircraft is powered by a six cylinder, horizontally opposed, normally aspirated, direct drive, air cooled, fuel injected engine. The engine is a Continental Model IO-470-F and is rated at 260 hp.

Fuel is supplied to the engine from two 32.5 gallon tanks, one in each wing. With the long range system, fuel quantity is increased to 42 gallons per tank. Fuel flows by gravity through a fuel accumulator tank, to a fuel shut-off valve and fuel strainer to the engine-driven fuel pump, bypassing two electric fuel pumps when they are not operating. Vapor and excess fuel from the engine-driven fuel pump and fuel unit are returned to the main fuel tanks by way of the vapor separator-fuel accumulator tank. Fuel quantity is measured by two electrically-operated indicators.

Electrical energy is supplied by a 12 volt, direct-current system powered by an engine-driven, 50-ampere generator and a 12-volt battery.


  1962 Cessna Skywagon 185A 1968 Cessna Skywagon
1985 Cessna Skywagon
Model Cont. IO-470-F Cont. IO-520-D Cont. IO-520-D
No. Cylinders 6 6 6
Displacement 470 cu. in. 520 cu. in. 520 cu. in.
HP 260 285/300 285/300
Carbureted Or Fuel Injected Fuel Injected Fuel Injected Fuel Injected
Fixed Pitch/ Constant Speed Propeller Constant Speed Constant Speed Constant Speed
Fuel Capacity 65 gallons
Long Range Tanks:  84 gallons
65 gallons
Long Range Tanks:  84 gallons
88 gallons
Long Range Tanks: N/A
Min. Octane Fuel 100 100 100
Avg. Fuel Burn at 75% power in standard conditions per hour 14.1 gallons 15.6 gallons Unknown
Weights and Capacities:      
Takeoff/Landing Weight Normal Category 3,200 lbs. 3,350 lbs. 3,350 lbs.
Takeoff/Landing Weight Utility Category N/A N/A N/A
Standard Empty Weight 1,560 lbs. 1,575 lbs. 1,726 lbs.
Max. Useful Load Normal Category 1,640 lbs. 1,775 lbs. 1,624 lbs.
Max. Useful Load Utility Category N/A N/A N/A
Baggage Capacity 350 lbs. 350 lbs. 170 lbs.
Oil Capacity 12 quarts 12 quarts 12 quarts
Do Not Exceed Speed 179 KCAS 182 KCAS 184 KIAS
Max. Structural Cruising Speed  143 KCAS  148 KCAS 149 KIAS
Stall Speed Clean 61 Knots 58 Knots    56 Knots
Stall Speed Landing Configuration 54 Knots 51 Knots 49 Knots
Climb Best Rate 1000 FPM 1010 FPM 1075 FPM
Wing Loading 18.4 lbs./sq. ft. 19.3 lbs./sq. ft. 19.3 lbs./sq. ft.
Power Loading 12.3 lbs./hp 11.2 lbs./hp 11.2 lbs./hp
Service Ceiling 17,300 ft 17,150 ft. 17,900 ft.