Weight & Balance

MODEL R172K Weight in Baggage Compartment, Normal Category: SECTION 1 GENERAL Baggage Area 1 (or passenger on child's seat)-Station 82 to 108: 200 lbs. See note below. Baggage Area 2 Station 108 to 142: 50 lbs. See note below. NOTE The maximum combined weight capacity for baggage areas 1 and 2 is 200 lbs. Weight in Baggage Compartment, Utility Category: In this category, the baggage compartment and rear seat must not be occupied. STANDARD AIRPLANE WEIGHTS Standard Empty Weight, Hawk XP: 1549 lbs. Hawk XP II: 1573 lbs. Maximum Useful Load: Normal Category Utility Category Hawk XP: Hawk XP II: 1001 lbs. 977 lbs. 651 lbs. 627 lbs. CABIN AND ENTRY DIMENSIONS Detailed dimensions of the cabin interior and entry door openings are illustrated in Section 6. BAGGAGE SPACE AND ENTRY DIMENSIONS Dimensions of the baggage area and baggage door opening are illustrated in detail in Section 6. SPECIFIC LOADINGS Wing Loading: 14.7 lbs./sq. ft. Power Loading: 13.1 lbs./hp. 1-5 SECTION 1 GENERAL CESSNA MODEL R172K SYMBOLS, ABBREVIATIONS AND TERMINOLOGY GENERAL AIRSPEED TERMINOLOGY AND SYMBOLS KCAS KIAS KTAS VA VFE VNO VNE VS √So VX VY Knots Calibrated Airspeed is indicated airspeed corrected for position and instrument error and expressed in knots. Knots calibrated airspeed is equal to KTAS in standard atmosphere at sea level. Knots Indicated Airspeed is the speed shown on the air- speed indicator and expressed in knots. Knots True Airspeed is the airspeed expressed in knots relative to undisturbed air which is KCAS corrected for altitude and temperature. Maneuvering Speed is the maximum speed at which you may use abrupt control travel. Maximum Flap Extended Speed is the highest speed per- missible with wing flaps in a prescribed extended position. Maximum Structural Cruising Speed is the speed that should not be exceeded except in smooth air, then only with caution. Never Exceed Speed is the speed limit that may not be exceeded at any time. Stalling Speed or the minimum steady flight speed at which the airplane is controllable. Stalling Speed or the minimum steady flight speed at which the airplane is controllable in the landing configu- ration at the most forward center of gravity. Best Angle-of-Climb Speed is the speed which results in the greatest gain of altitude in a given horizontal distance. Best Rate-of-Climb Speed is the speed which results in the greatest gain in altitude in a given time. METEOROLOGICAL TERMINOLOGY OAT Outside Air Temperature is the free air static tempera- ture. It is expressed in either degrees Celsius (formerly Centigrade) or degrees Fahrenheit. 1-6 CESSNA MODEL R172K SECTION 1 GENERAL Standard Tempera ture Pressure Altitude Standard Temperature is 15°C at sea level pressure alti- tude and decreases by 2°C for each 1000 feet of altitude. Pressure Altitude is the altitude read from an altimeter when the altimeter's barometric scale has been set to 29.92 inches of mercury (1013 mb). ENGINE POWER TERMINOLOGY BHP RPM MP Brake Horsepower is the power developed by the engine. Revolutions Per Minute is engine speed. Manifold Pressure is a pressure measured in the engine's induction system and is expressed in inches of mercury (Hg). AIRPLANE PERFORMANCE AND FLIGHT PLANNING TERMI- NOLOGY Demon- strated Crosswind Velocity Usable Fuel Unusable Fuel GPH NMPG g Demonstrated Crosswind Velocity is the velocity of the crosswind component for which adequate control of the airplane during takeoff and landing was actually demon- strated during certification tests. The value shown is not considered to be limiting. Usable Fuel is the fuel available for flight planning. Unusable Fuel is the quantity of fuel that can not be safely. used in flight. Gallons Per Hour is the amount of fuel (in gallons) con- sumed per hour. Nautical Miles Per Gallon is the distance (in nautical miles) which can be expected per gallon of fuel consumed at a specific engine power setting and/or flight configura- tion. gis acceleration due to gravity. 1-7 SECTION 1 GENERAL CESSNA MODEL R172K WEIGHT AND BALANCE TERMINOLOGY Reference Datum Station Arm Moment Center of Gravity (C.G.) C.G. Arm C.G. Limits Standard Empty Weight Basic Empty Weight Useful Load Gross (Loaded) Weight Reference Datum is an imaginary vertical plane from which all horizontal distances are measured for balance. purposes. Station is a location along the airplane fuselage given in terms of the distance from the reference datum. Arm is the horizontal distance from the reference datum to the center of gravity (C.G.) of an item. Moment is the product of the weight of an item multiplied by its arm. (Moment divided by the constant 1000 is used in this handbook to simplify balance calculations by re- ducing the number of digits.) Center of Gravity is the point at which an airplane. or equipment, would balance if suspended. Its distance from the reference datum is found by dividing the total moment by the total weight of the airplane. Center of Gravity Arm is the arm obtained by adding the airplane's individual moments and dividing the sum by the total weight. Center of Gravity Limits are the extreme center of gravity locations within which the airplane must be operated at a given weight. Standard Empty Weight is the weight of a standard air- plane, including unusable fuel, full operating fluids and full engine oil. Basic Empty Weight is the standard empty weight plus the weight of optional equipment. Useful Load is the difference between takeoff weight and the basic empty weight. Gross (Loaded) Weight is the loaded weight of the air- plane. 1-8 CESSNA MODEL R172K SECTION 1 GENERAL Maximum Takeoff Weight Maximum Landing Weight Tare Maximum Takeoff Weight is the maximum weight ap- proved for the start of the takeoff run. Maximum Landing Weight is the maximum weight ap- proved for the landing touchdown. Tare is the weight of chocks, blocks, stands, etc. used when weighing an airplane, and is included in the scale read- ings. Tare is deducted from the scale reading to obtain the actual (net) airplane weight. 1-9/(1-10 blank) CESSNA MODEL R172K SECTION 2 LIMITATIONS SECTION 2 LIMITATIONS TABLE OF CONTENTS Introduction Airspeed Limitations Airspeed Indicator Markings Power Plant Limitations Power Plant Instrument Markings Weight Limits... Normal Category Utility Category Center of Gravity Limits Normal Category Utility Category Maneuver Limits Normal Category Utility Category Flight Load Factor Limits Normal Category Utility Category Kinds of Operation Limits Fuel Limitations. Placards Page 2-3 4 2-4 2-5 2-5 2-6 T . 2-6 2-6 . . 2-7 4 2-7 . 2-7 . " 2-7 2-7 2-7 . 2-7 2-8 • 2-8 2-8 . 4 4 2-9 + . . . 2-9 . . .2-10 2-1/(2-2 blank) CESSNA MODEL R172K INTRODUCTION SECTION 2 LIMITATIONS Section 2 includes operating limitations, instrument markings, and basic placards necessary for the safe operation of the airplane, its en- gine, standard systems and standard equipment. The limitations in- cluded in this section have been approved by the Federal Aviation Ad- ministration. When applicable, limitations associated with optional systems or equipment are included in Section 9. NOTE The airspeeds listed in the Airspeed Limitations chart (figure 2-1) and the Airspeed Indicator Markings chart (figure 2-2) are based on Airspeed Calibration data shown in Section 5 with the normal static source. If the alternate static source is being used, ample margins should be observed to allow for the airspeed calibration variations between the normal and alternate static sour- ces as shown in Section 5. Your Cessna is certificated under FAA Type Certificate No. 3A17 as Cessna Model No. R172K. 2-3