Rajan Wilcox
The Cessna 172 Skyhawk is an American four-seat, single-engine, high-wing, fixed-wing aircraft made by the Cessna Aircraft Company. The Cessna 172S, introduced in 1998, has a total fuel capacity of 56 gallons, with 53 gallons of fuel usable. The Cessna 172S has two fuel tanks, with each tank mounted in each wing, holding 28 gallons.
| Characteristics | Values |
|---|---|
| Number of Fuel Tanks | 2 |
| Location of Fuel Tanks | One tank mounted in each wing |
| Fuel Tank Capacity | 28 gallons per tank (56 gallons total, 53 gallons usable) |
| Engine | Lycoming IO-360-L2A |
| Horsepower | 180 hp (134 kW) |
| Maximum Engine RPM | 2,700 rpm |
| Maximum Takeoff Weight | 2,550 lb (1,157 kg) |
| Fuel Type | Varies, including Jet-A fuel and diesel |
| Fuel Consumption | 3 US gallons (11 L; 2.5 imp gal) per hour less fuel than the standard 172 |
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What You'll Learn
The Cessna 172S has a total fuel capacity of 56 gallons
The Cessna 172 is an American four-seat, single-engine, high-wing, fixed-wing aircraft manufactured by the Cessna Aircraft Company. The Cessna 172S, introduced in 1998, has a total fuel capacity of 56 gallons, with two fuel tanks mounted in each wing, each holding 28 gallons. However, only 53 gallons of fuel are usable, as the remaining fuel may be contaminated by dirt or other factors, and the lines that draw fuel to the engine are positioned slightly above the bottom of the tank to avoid drawing contaminated fuel.
The Cessna 172S's fuel system includes an electric fuel pump, which serves as a backup in case the engine-driven pump fails, ensuring normal power output is maintained. The system also includes a fuel injector servo regulator, which creates the correct ratio of air-to-fuel by comparing inlet air pressure to fuel inlet pressure. This allows for a metered fuel pressure, which increases as throttle and airflow through the engine increase, resulting in a pressure difference that opens the ball valve and allows more fuel flow.
The Cessna 172 series has seen various models with different fuel capacities. For example, the 1976 Cessna 172M with standard tanks has a total fuel capacity of 42 gallons, with 38 gallons being usable. The 172M also offers long-range tanks with a capacity of 52 gallons, 48 of which are usable. Another model, the 172N, has a fuel capacity of 43 gallons, with 40 gallons being usable.
It is important to accurately measure fuel tank capacity to ensure safe and efficient flight operations. Methods for determining fuel capacity include emptying and refilling tanks, using fuel dipsticks and watches, and employing engine monitors.
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Each of its two fuel tanks can hold 28 gallons
The Cessna 172S is a four-seat, single-engine, high-wing, fixed-wing aircraft. It was first flown in 1955, and more 172s have been built than any other aircraft. The Cessna 172S has two fuel tanks, with each tank mounted in each wing. Each of its two fuel tanks can hold 28 gallons, for a total fuel capacity of 56 gallons. However, only 53 gallons of this fuel is usable. This is because the lines that draw fuel to the engine are slightly above the bottom of the tanks, preventing fuel contamination.
The Cessna 172S has a powerful engine, producing 180 horsepower. The maximum engine rpm was increased from 2,400 rpm to 2,700 rpm, resulting in a 20 hp increase over the previous model. The aircraft has a maximum takeoff weight of 2,550 lb.
The Cessna 172's fuel system is designed to maintain the correct fuel-air ratio in each cylinder. This is achieved through the use of a fuel distributor, which takes the metered fuel flow and separates it equally into the fuel lines leading to the fuel nozzles. The final purpose of the electric fuel pump is redundancy; if the engine-driven pump fails, the electric pump provides enough fuel pressure to keep the engine operating with normal power output.
The Cessna 172S also has a unique fuel selector valve that can be placed in a "both" position, allowing fuel to flow from both tanks simultaneously. This feature is not found on most low-wing aircraft.
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The Cessna 172C has a total fuel capacity of 42 gallons
The Cessna 172 is an American four-seat, single-engine, high-wing, fixed-wing aircraft. The Cessna 172C has a total fuel capacity of 42 gallons, with 21 gallons in each tank. However, only 37 or 38 gallons of the total fuel capacity are usable during normal flight attitudes. This is because the lines that draw fuel to the engine are slightly above the bottom of the tank, leaving some fuel at the bottom inaccessible to avoid drawing contaminants that may have settled.
There is some discrepancy in the sources regarding the exact fuel capacity of the Cessna 172C. Some sources suggest that the Cessna 172C has a total fuel capacity of 36 gallons, with 18 or 19 gallons being usable. This discrepancy may be due to differences in fuel tank sizes or measurement methods.
It is important to accurately measure the fuel capacity of an aircraft to ensure safe and efficient flight planning. One recommended method is to empty the tanks and then refill them from an accurate source, such as a fuel truck. This allows for a precise measurement of the fuel capacity. Additionally, regularly sticking the tanks before each flight and refill can help in accurately managing fuel usage.
The fuel capacity of the Cessna 172 varies depending on the model and the type of fuel tanks installed. For example, the 172N model has a fuel capacity of 43 gallons, while the 172M model has a standard fuel capacity of 42 gallons but can be upgraded to long-range tanks with a capacity of 52 gallons. Similarly, the Cutlass RG model has a fuel capacity of 62 gallons, significantly more than the standard Skyhawk model's 53 gallons. These variations in fuel capacity can impact the range and endurance of the aircraft.
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The 172C's two fuel tanks can each hold 21 gallons
The Cessna 172 is an American four-seat, single-engine, high-wing, fixed-wing aircraft. The 172S was introduced in 1998 and is powered by a Lycoming IO-360-L2A engine that produces 180 horsepower. The 172Cs, meanwhile, are equipped with two fuel tanks, each capable of holding 21 gallons of fuel. That amounts to a total fuel capacity of 42 gallons, 37 or 38 of which are usable during normal flight attitudes.
The 172Cs' fuel tanks are mounted in each wing. While the tanks can each hold 21 gallons, only 18.5 gallons from each tank are usable during normal flight attitudes. This is because the lines that draw fuel to the engine are positioned slightly above the bottom of the tanks to avoid drawing in contaminants that may have settled at the bottom.
The 172Cs offer a more advanced fuel system compared to low-wing aircraft. The 172's fuel selector valve can be placed in a "both" position, allowing fuel to flow from both the left and right tanks simultaneously. This is in contrast to most low-wing aircraft, which typically only have "Left" and "Right" settings. Additionally, the high-wing design of the 172Cs allows gravity to play a more significant role in pressurizing the fuel system. This reduces the need for additional pumps, as an electric boost pump is only required to supplement the engine-driven fuel pump during operations like starting the engine.
To ensure accurate fuel tank capacity measurements, it is recommended to empty the tanks and then refill them from a precise source, such as a fuel truck. This process can be dangerous due to the risk of static electricity igniting fuel fumes, so proper safety precautions must be taken. Regularly sticking the tanks before each flight and refill can also help maintain accurate fuel usage information.
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The 172M has a total fuel capacity of 42 gallons with standard tanks
The Cessna 172 is an American four-seat, single-engine, high-wing, fixed-wing aircraft. It was first flown in 1955 and, as of 2015, more 172s have been built than any other aircraft, with over 44,000 units built. Cessna 172s have two fuel tanks, with one tank mounted in each wing.
The Cessna 172M has a total fuel capacity of 42 gallons with standard tanks. Each of the two tanks can hold 21 gallons, with 38 gallons being usable. The long-range tanks option can hold a total of 52 gallons, with 48 being usable.
The fuel capacity and usability vary across different models of the Cessna 172. For example, the 172C model has a reported fuel capacity of 36 gallons, with 39 gallons in the owner's manual. The 172S model has a total fuel capacity of 56 gallons, with 53 gallons being usable.
It is important to accurately measure fuel capacity and usability for flight planning and safety. Methods for determining accurate fuel capacity include emptying and refilling tanks, using fuel dipsticks and watches, and employing engine monitors.
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Frequently asked questions
The Cessna 172S has a fuel capacity of 56 gallons, with 53 gallons being usable.
The Cessna 172S has two fuel tanks, with one tank mounted in each wing. Each tank holds 28 gallons.
The most accurate way is to empty the tanks and then refill them from a fuel truck.
The Cessna 172C has a fuel capacity of 42 gallons, with 36-39 gallons being usable.
The standard tanks on the 1976 Cessna 172M have a capacity of 42 gallons, with 38 gallons being usable.
