Cessna 172P Skyhawk Pilot's Operating Handbook

Center of Gravity Range: Forward: 36.4 inches aft of datum at 1825 lbs. or less, with straight line variation to 39.8 inches aft of datum at 2220 lbs. Aft 45.5 inches aft of datum at all weights. 6 12 May 1981 PILOT'S OPERATING HANDBOOK SUPPLEMENT 1 FLOATPLANE MODEL 172P Reference Datum: Lower portion of front face of firewall. MANEUVER LIMITS The floatplane is certificated in the normal category. The normal category is applicable to aircraft intended for non-aerobatic operations. These include any maneuvers incidental to normal flying, stalls (except whip stalls), lazy eights, chandelles, and steep turns in which the angle of bank is not more than 60°. Aerobatic maneuvers, including spins, are not approved. FLIGHT LOAD FACTOR LIMITS Flight Load Factors (Maximum Takeoff Weight - 2220 lbs.): *Flaps Up *Flaps Down +3.8g, -1.52g +3.0g *The design load factors are 150% of the above, and in all cases, the structure meets or exceeds design loads. OTHER LIMITATIONS FLAP LIMITATIONS Approved Takeoff Range: 0° to 10°. Approved Landing Range: 0° to 30°. WATER RUDDER LIMITATIONS Water rudders must be retracted for all flight operations. 12 May 1981 7 1 FLOATPLANE MODEL 172P PILOT'S OPERATING HANDBOOK SUPPLEMENT PLACARDS The following information must be displayed in the form of composite or individual placards in addition to those specified in the basic handbook. 1. In full view of the pilot: (The "DAY-NIGHT-VFR-IFR" entry, shown on the example below, will vary as the airplane is equipped.) The markings and placards installed in this airplane contain operat- ing limitations which must be complied with when operating this airplane in the Normal Category. Other operating limitations which must be complied with when operating this airplane in this category are contained in the Pilot's Operating Handbook and FAA Approved Airplane Flight Manual. No acrobatic maneuvers, including spins, approved. Flight into known icing conditions prohibited. This airplane is certified for the following flight operations as of date of original airworthiness certificate: DAY-NIGHT-VFR-IFR 2. Near water rudder stowage hook: 00 8 3. WATER RUDDER ALWAYS UP EXCEPT WATER TAXIING In full view of the pilot: WATER RUDDER MUST BE RETRACTED FOR TAKEOFF, FLIGHT, AND LANDING. 12 May 1981 PILOT'S OPERATING HANDBOOK SUPPLEMENT 4. Near the airspeed indicator: MANEUVER SPEED 96 KIAS. 1 FLOATPLANE MODEL 172P 12 May 1981 9/(10 blank) PILOT'S OPERATING HANDBOOK SUPPLEMENT SECTION 3 EMERGENCY PROCEDURES 1 FLOATPLANE MODEL 172P INTRODUCTION Checklist and amplified procedures contained in the basic handbook generally should be followed. The additional or changed procedures specifically required for operation of the Model 172P equipped with Edo Model 89-2000 floats are presented in this section. AIRSPEEDS FOR EMERGENCY OPERATION The speeds listed below should be substituted, as appropriate, for the speeds contained in Section 3 of the basic handbook. Engine Failure After Takeoff: Wing Flaps Up 65 KIAS Wing Flaps Down 10° 60 KIAS Maneuvering Speed: 2220 Lbs 96 KIAS 2020 Lbs 91 KIAS 1820 Lbs 86 KIAS Maximum Glide 65 KIAS Precautionary Landing With Engine Power, Flaps Down 60 KIAS Landing Without Engine Power: Wing Flaps Up 65 KIAS Wing Flaps Down 60 KIAS 12 May 1981 11 1 FLOATPLANE MODEL 172P PILOT'S OPERATING HANDBOOK SUPPLEMENT OPERATIONAL CHECKLISTS Procedures in the Operational Checklists portion of this section shown in bold-faced type are immediate-action items which should be committed to memory. ENGINE FAILURE ENGINE FAILURE DURING TAKEOFF RUN 1. Throttle IDLE. 2. Control Wheel -- FULL AFT. 12345 3. Mixture -- IDLE CUT-OFF. 4. Ignition Switch -- OFF. 5. Master Switch -- OFF. FORCED LANDINGS EMERGENCY LANDING ON WATER WITHOUT ENGINE POWER 1. Airspeed -- 65 KIAS (flaps UP). 2. 3. 4. 60 KIAS (flaps DOWN). Mixture IDLE CUT-OFF. -- Fuel Selector Valve Ignition Switch 5. Water Rudders 23456700 6. 7. Wing Flaps -- Master Switch -- OFF. -- ―― OFF. UP. OFF. AS REQUIRED. -- 8. Doors UNLATCH PRIOR TO APPROACH. 9. -- Touchdown 1- 10. Control Wheel SLIGHTLY TAIL LOW. -- HOLD FULL AFT as floatplane decelerates. EMERGENCY LANDING ON LAND WITHOUT ENGINE POWER 1. Airspeed 2. Mixture 11 65 KIAS (flaps UP). 60 KIAS (flaps DOWN). IDLE CUT-OFF. 3. Fuel Selector Valve 4. -- OFF. Ignition Switch OFF. -- 5. Water Rudders UP. -- Wing Flaps AS REQUIRED (30° recommended). Master Switch -- OFF. - UNLATCH PRIOR TO APPROACH. 6. 7. 8. Doors 9. 10. Control Wheel -- Touchdown -- LEVEL ATTITUDE. 12 -- FULL AFT (after contact). 12 May 1981 1 PILOT'S OPERATING HANDBOOK SUPPLEMENT AMPLIFIED PROCEDURES FLOATPLANE MODEL 172P MAXIMUM GLIDE After an engine failure in flight, the best glide speed as shown in figure 3 should be established as quickly as possible. In the likely event the propeller should stop, maintain the speed shown. HEIGHT ABOVE TERRAIN - FT 10,000 * PROPELLER WINDMILLING *ZERO WIND 8000 6000 4000 2000 SPEED 65 KIAS * FLAPS UP 0 2 4 6 8 10 12 14 16 18 20 20 GROUND DISTANCE - NAUTICAL MILES Figure 3. Maximum Glide 12 May 1981 13/(14 blank) PILOT'S OPERATING HANDBOOK SUPPLEMENT SECTION 4 NORMAL PROCEDURES 1 FLOATPLANE MODEL 172P INTRODUCTION Checklist and amplified procedures contained in the basic handbook generally should be followed. The additional or changed procedures specifically required for operation of the Model 172P equipped with Edo Model 89-2000 floats are presented in this section. SPEEDS FOR NORMAL OPERATION Unless otherwise noted, the following speeds are based on a maximum weight of 2220 pounds and may be used for any lesser weight. Takeoff: Normal Climb Out 65 KIAS Maximum Performance, Flaps 10°, Speed at 50 Feet Enroute Climb, Flaps Up: 53 KIAS Normal 60-70 KIAS Best Rate of Climb, Sea Level 64 KIAS 57 KIAS Best Rate of Climb, 10,000 Feet Best Angle of Climb, Sea Level thru 10,000 Feet Landing Approach: Normal Approach, Flaps Up 53 KIAS 60-70 KIAS Normal Approach, Flaps 30° 55-65 KIAS Maximum Performance Approach, Flaps 30° 53 KIAS Balked Landing: Maximum Power, Flaps 20° 55 KIAS Maximum Recommended Turbulent Air Penetration Speed: 2220 Lbs 96 KIAS 2020 Lbs 91 KIAS 1820 Lbs 86 KIAS Maximum Demonstrated Crosswind Velocity: Takeoff or Landing 10 KNOTS 12 May 1981 15