Cessna Skyhawk 1970 Manual de usuario

CESSNA

MORE PEOPLE BUY AND

FLY CESSNA AlRPLANES

THAN ANY OTHER MAKE

1970 '

SINAWK

WU CRLE

'5 OLFARNE SNER A° OWNE R' S

AVIATION AIRCRAFT

51NCE 1956 MANUAL

PERFORMANCE -SPEClFICATIONS

Model172* Skyhawk*

GROSS WEIGHT ..... . ... .. . . . 2300 lbs 2300 lbs

SPEED:

Top Speed at Sea Level ..... . .. . 139 mph 140 mph

Cruise, 759'oPower at 9000 ft .. . . . .131 mph 132 mph

RANGE:

Cruise, 75°/oPower at 9000 ft .. . -.-615 mi 620 mi

38 Gal., No Reserve 4.7 hrs 4.7 hrs

131 mph 132 mph

Cruise, 75/o Power at 9000 ft .. . . 775 mi 780 mi

48 Gal., No Reserve 5.9 hrs 5.9 hrs

131 mph 132 mph

Optimum Range at 10, 000 ft . . ....-640 mi 655 mi

38 Gal., No Reserve 5.5 hrs 5.5 hrs

117 mph 118 mph

Optimum Range at 10, 000 ft ..... . . 820 mi 830 mi

48 Gal., No Reserve 7.0 hrs 7.0 hrs

117 mph 118 mph

RATE OF CLIMB AT SEA LEVEL .. . --.645 fpm 645 fpm

SERVICE CEILING .. . ......... . 13, 100 ft 13, 100 ft

TAKE-OFF:

GroundRun .............. 865ft 865ft

Total Distance Over 50-Foot Obstacle. . . 1525 ft 1525 ft

LANDING:

GroundRoll.............. 520ft 520ft

Total Distance Over 50-Foot Obstacle. . - 1250 ft 1250 ft

STALL SPEED:

Flaps Up, Power Off . . . . .... .- 57 mph 57 mph

Flaps Down, Power Off ... . . . . - - 49 mph 49 mph

EMPTY WEIGHT (Approximate) . . .. . . . 1245 lbs 1315 lbs

USEFUL LOAD . . . . . .. . ... ....1055 lbs 985 lbs

BAGGAGE .... . .. . ... ... .. - 120 lbs 120 lbs

WING LOADING: Pounds/Sq Foot .-...-13. 213. 2

POWER LOADING: Pounds/HP .. . . . . . 15. 315. 3

FUEL CAPACITY: Total

Standard Tanks .... . . . . . .--42 gal. 42 gal.

Optional Long Range Tanks ... . .- - 52 gal. 52 gal.

OIL CAPACITY: Total .. . ... . . . . . 8 qts 8 qts

PROPELLER: Fixed Pitch (Diameter) ... - 76 inches 76 inches

ENGINE:

Lycoming Engine -- - - - - - -----O-320-E2D O-320-E2D

150 rated HP at 2700 RPM

*This manual covers operation of the Model 112/Skyhawk which is certificated

as Model 172K under FAAType Certificate No. 3Al2.

D742-13-RAND-T500-10/73

CONGRATULATIONS . . . . . . .

Welcome to the ranks of Cessna owners! Your Cessna has been designed

and constructed to give you the most in performance, economy, and com-

fort. It is our desire that you will find flying it, either for business or

pleasure, apleasant and profitable experience.

This Owner's Manual has been prepared as a guide to help you get the

most pleasure and utility from your Model 172/Skyhawk. It contains in-

formation about your Cessna's equipment, operating procedures, and per-

formance; and suggestions for its servicing and care. We urge you to read

it from cover to cover, and to refer to it frequently.

Our interest in your flying pleasure has not ceased with your purchase of

a Cessna. World-wide, the Cessna Dealer Organization backed by the

Cessna Service Department stands ready to serve you. The following

services are offered by most Cessna Dealers:

FACTORY TRAINED PERSONNEL to provide you with courteous

expert service.

FACTORY APPROVED SERVICE EQUIPMENT to provide you

with the most efficient and accurate workmanship possible.

ASTOCK OF GENUINE CESSNA SERVICE PARTS on hand

when you need them.

THE LATEST AUTHORITATIVE INFORMATION FOR SERV-

ICING CESSNA AIRPLANES, since Cessna Dealers have all

of the Service Manuals and Parts Catalogs, kept current by

Service Letters and Service News Letters, published by Cessna

Aircraft Company.

We urge all Cessna owners to use the Cessna Dealer Organization to the

fullest.

Acurrent Cessna Dealer Directory accompanies your new airplane. The

Directory is revised frequently, and a current copy can be obtained from

your Cessna Dealer. Make your Directory one of your cross-country

flight planning aids; awarm welcome awaits you at every Cessna Dealer.

8-9½" MAX.

2-11"

1154"

iMaximum height of airplane

with nose gear depressed and

an optional flashing beacon

installed.

PRINCIPAL

DIMENSIONS

-4" MAX

7 2"-

TABLE OF CONTENTS

Page =

SECTION I-OPERATING CHECK LIST .....___ 1-1

SECTION 11 -DESCRIPTION AND

OPERATING DETAILS ..........___ 2-1

SECTION lli -EMERGENCY PROCEDURES..... 3-1

SECTION IV -OPERATING LIMITATIONS........ 4-1

SECTION V-CARE OF THE AIRPLANE........ 5-1

OWNER FOLLOW-UP SYSTEM --------------- 5-10

SECTION VI -OPERATIONAL DATA......-____... 6-1

SECTION VII- OPTIONAL SYSTEMS......-....... 7-1

ALPHABETICAL INDEX........................... Index-1

This manual describes the operation and performance of

both the Cessna Model 172 and Skyhawk. Equipment des -

cribed as "Optional" denotes that the subject equipment is

optional on the Model 172. Much of this equipment is stan-

dard on the Skyhawk model.

iii

EXTERIOR Note

CTIOIN PE NVisuaHy check aircraft for general

condition during walk-around in-

spection. In cold weather, remove

even sman accumulations of frost,

ice or snow from wing, tail and

control surfaces. Also, make sure

that control surfaces contain no in-

ternal accumulations of ice or de-

bris. 11 night flight is planned,

check operation of all lights, and

make sure a flashlight is available.

a. Remove control wheel lock. b. Before first flight of day and after each refuel-

b. Check ignition switch "OFF." ing, pull out strainer drain knob for about four

c. Turn on master switch and check fuel quantity seconds to clear fuel strainer of possible water

indicators, then tura master switch "OFF." and sediment. Check strainer drain closed. If

d. Check fuel selector valve hamile on "BOTH." water is observed, there is a possibility that the

e. Check baggage door for security, fuel tank sumps contain water. Thus, the fuel

tank sump drain plugs and fuel selector valve

drain plug should be removed to check for the

presence of water.

a. Remove rudder gust lock, if installed. c. Check propeller and spinner for nicks and se-

b. Disconnect tall tie-down. curity.

c. Check control surfaces for freedom of d. Check carburetor air filter for restrictions by

movement and security, dust or other foreign matter.

e. Check nose wheel strut and tire for proper in-

flation.

f. Disconnect tie-down rope.

a. Check control surfaces for free and correct g. Inspect flight instrument static source opening

movement and security. on side of fuselage for stoppage (left side only).

b. Disconnect wing tie-down,

c. Check main wheel tire for proper inflation.

d. Visually check fuel quantity, then check fuel a. Remove pitot tube cover, if installed, and check

filler cap secure, pitot tube opening for stoppage,

b. Check fuel tank vent opening for stoppage,

c. Check sta11 warning vent opening for stoppage.

a. Check oil level. Do not operate with less than

xq ts. Fill to eight quarts for extended Same as

Figure 1-1.

Jecties I

OPERATING CHECK LIST

One of the first steps in obtaining the utmost performance, service,

and flying enjoyment from your Cessna is to familiarize yourself with

your airplane's equipment, systems, and controls. This can best be done

by reviewing this equipment while sitting in the airplane. Those items

whose function and operation are not obvious are covered in Section II.

Section I lists, in Pilot's Check List form, the steps necessary to

operate your airplane efficiently and safely. It is not a check list in its

true form as it is considerably longer, but it does cover briefly all of

the points that you should know for a typical flight.

The flight and operational characteristics of your airplane are normal

in all respects. There are no "unconventional" characteristics or opera-

tions that need to be mastered. All controls respond in the normal way

within the entire range of operation. All airspeeds mentioned in Sections

I, II and HI are indicated airspeeds. Corresponding calibrated airspeed

may be obtained from the Airspeed Correction Table in Section VI.

BEFORE ENTERING THE AIRPLANE.

(1) Make an exterior inspection in accordance with figure 1-1.

BEFORE STARflNG THE ENGINE.

(1) Seats and Seat Belts -- Adjust and lock.

(2) Fuel Selector Valve -- "BOTH."

(3) Brakes -- Test and set.

(4) Radios and Electrical Equipment -- "OFF."

1-1

STARTING THE ENGINE.

(1) Mixture -- Rich.

(2) Carburetor Heat -- Cold.

(3) Primer -- 2-6strokes (as required; none if engine is warm)

Close and lock primer.

(4) Throttle -- Open 1/8".

(5) Master Switch -- "ON. "

(6) Propeller Area -- Clear.

(7) Ignition Switch -- "START" (release when engine starts).

(8) Oil Pressure -- Check.

BEFORE TAKE-OFF.

(1) Parking Brake -- Set.

(2) Flight Controls -- Check for free and correct movement.

(3) Fuel Selector Valve -- "BOTH."

(4) Elevator Trim -- "TAKE-OFF" setting.

(5) Throttle Setting -- 1700 RPM.

(6) Engine Instruments and Ammeter -- Check.

(7) Suction Gage -- Check (4.6 to 5.4 inches of mercury).

(8) Magnetos -- Check (RPM drop should not exceed 125 RPM on

either magneto or 50 RPM differential between magnetos).

(9) Carburetor Heat -- Check operation.

(10) Flight Instruments and Radios -- Set.

(11) Optional Autopilot or Wing Leveler -- Off.

(12) Cabin Doors and Window -- Closed and locked.

TAKE-OFF.

NORMAL TAKE-OFF.

(1) Wing Flaps -- 0°.

(2) Carburetor Heat -- Cold.

(3) Power -- Full throttle.

(4) Elevator Control -- Lift nose wheel at 60 MPH.

(5) Climb Speed -- 75 to 85 MPH.

MAXIMUM PERFORMANCE TAKE-OFF.

(1) Wing Flaps -- 0°.

1-2

(2) Carburetor Heat -- Cold.

(3) Brakes -- Apply.

(4) Power -- Full throttle.

(5) Brakes -- Release.

(6) Airplane Attitude -- Slightly tail low.

(7) Climb Speed -- 68 MPH until all obstacles are cleared.

CLI MB.

(1) Airspeed -- 80 to 90 MPH.

NOTE

If amaximum performance climb is necessary, use

speeds shown in the Maximum Rate-Of-Climb Data

chart in Section VI.

(2) Power -- Full throttle.

(3) Mixture -- Full rich (mixture may be leaned above 5000 feet).

CR UI SIN G.

(1) Power -- 2200 to 2700 RPM.

NOTE

Maximum cruise RPM varies with altitude. For details,

refer to Section IV.

(2) Trim Tab -- Adjust.

(3) Mixture -- Lean for maximum RPM.

LET-DOWN.

(1) Mixture -- Rich.

(2) Power -- As desired.

(3) Carburetor Heat -- As required to prevent carburetor icing.

1-3

BEFORE LANDING.

(1) Fuel Selector Valve -- "BOTH."

(2) Mixture -- Rich.

(3) Carburetor Heat -- Apply full heat before closing throttle.

(4) Wing Flaps -- As desired.

(5) Airspeed -- 70 to 80 MPH (flaps up), 65 to 75 MPH (flaps down).

BALKED LANDING (GO-AROUND).

(1) Power -- Full throttle.

(2) Carburetor Heat -- Cold.

(3) Wing Flaps -- Retract to 20°.

(4) Upon reaching an airspeed of approximately 65 MPH, retract

flaps slowly.

NORMAL LANDING.

(1) Touchdown -- Main wheels first.

(2) Landing Roll -- Lower nose wheel gently.

(3) Braking -- Minimum required.

AFTER LANDING.

(1) Wing Flaps -- Up.

(2) Carburetor Heat -- Cold.

SECURING AIRCRAFT.

(1) Parking Brake -- Set.

(2) Radios and Electrical Equipment -- "OFF. "

(3) Mixture -- Idle cut-off (pulled full out).

(4) Ignition and Master Switch -- "OFF."

(5) Control Lock -- Installed.

1-4

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