Cessna 172Q Pilot's Operating Handbook

place the fuel selector valve in either LEFT or RIGHT posi- tion. OIL Oil Specification: MIL-L-6082 Aviation Grade Straight Mineral Oil: Used when the airplane was delivered from the factory and should be used to re- plenish the supply during the first 25 hours. This oil should be drained after the first 25 hours of operation. Refill the engine and con- tinue to use until a total of 50 hours has accumulated or oil consump- tion has stabilized. MIL-L-22851 Aviation Grade Ashless Dispersant Oil: Oil conforming to Avco Lycoming Service Instruction No. 1014, and all revisions and supplements thereto, must be used after first 50 hours or oil con- sumption has stabilized. Recommended Viscosity for Temperature Range: All temperatures, use multi-viscosity oil or Above 16° C (60° F), use SAE 50 -1° C (30° F) to 32° C (90° F), use SAE 40 -18° C (0° F) to 21° C (70° F), use SAE 30 NOTE When operating temperatures overlap, use the lighter grade of oil. Oil Capacity: Sump: 8 Quarts. Total: 9 Quarts. 1-4 Original Issue }) ). ) ) ) ) ) ) CESSNA MODEL 172Q SECTION 1 GENERAL MAXIMUM CERTIFICATED WEIGHTS Ramp: 2558 lbs. Takeoff: 2550 lbs. Landing: 2550 lbs. Weight in Baggage Compartment: Baggage Area 1 (or passenger on child's seat) - Station 82 to 108; 120 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 120 lbs. STANDARD AIRPLANE WEIGHTS Standard Empty Weight, Cutlass: 1486 lbs. Cutlass II: 1513 lbs. Cutlass II: 1045 lbs. Maximum Useful Load, Cutlass: 1072 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 illus- trated in detail in Section 6. SPECIFIC LOADINGS Wing Loading: 14.7 lbs./sq. ft. Power Loading: 14.2 lbs./hp. Original Issue 1-5 SECTION 1 GENERAL SYMBOLS, ABBREVIATIONS AND TERMINOLOGY CESSNA MODEL 172Q GENERAL AIRSPEED TERMINOLOGY AND SYMBOLS KCAS KIAS KTAS A V₁ A FE √ NO VNE Vs ༥༠ 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 airspeed 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 full or abrupt control movements may be used. Maximum Flap Extended Speed is the highest speed permissible 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 ОАТ 1-6 Outside Air Temperature is the free air static temperature. Original Issue CESSNA MODEL 172Q SECTION 1 GENERAL Standard Tempera- ture Pressure Altitude It is expressed in either degrees Celsius or degrees Fah- renheit. 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 Static RPM Brake Horsepower is the power developed by the engine. Revolutions Per Minute is engine speed. Static RPM is engine speed attained during a full-throttle engine runup when the airplane is on the ground and stationary. AIRPLANE PERFORMANCE AND FLIGHT PLANNING TERMINOLOGY Demon- strated Crosswind Velocity Usable Fuel Unusable Fuel GPH NMPG g Original Issue 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 consumed per hour. Nautical Miles Per Gallon is the distance which can be expected per gallon of fuel consumed at a specific engine power setting and/or flight configuration. g is acceleration due to gravity. 1-7