Cruising Piper Archer III PA-28-181 step by step,

WELCOME ADVANCE FLYING ACADEMY

CRUISING

Power .....................set per power table

Mixture ............................................adjust

The cruising speed of the ARCHER III is determined by many factors, including power setting, altitude, temperature, loading and equipment installed in the airplane. The normal maximum cruising power is 75% of the rated horsepower of the engine. Airspeeds which may be obtained at various altitudes and power settings can be determined from the performance graphs.

Use of the mixture control in cruising flight reduces fuel consumption significantly, especially at higher altitudes. The mixture should be leaned during cruising operation above 5000 ft. altitude and at pilot’s discretion at lower altitudes when 75% power or less is being used. If any doubt exists as to the amount of power being used, the mixture should be in the full RICH position for all operations under 5000 feet. To lean the mixture, disengage the lock and pull the mixture control back.

Best economy mixture is obtained by slowly leaning the mixture until engine operation becomes rough or until engine power rapidly diminishes. When either condition occurs, enrich the mixture sufficiently to obtain an evenly firing engine. Some engine power and airspeed must be sacrificed to gain a best economy mixture setting. Best power mixture is obtained by gradually leaning the mixture until either the tachometer or the airspeed indicator reading peaks. If the airplane is equipped with the optional exhaust gas temperature (EGT) gauge, a more accurate means of leaning is available to the pilot. Best economy mixture is obtained by moving the mixture control aft until peak EGT is reached. Best power mixture is obtained by leaning to peak EGT and then enrichening until the EGT is 100F. rich of the peak value. Under some conditions of altitude and throttle position, the engine may exhibit roughness before peak EGT is reached. If this occurs, the EGT corresponding to the onset of engine roughness should be used as the peak reference value.

Always remember that the electric fuel pump should be turned ON before switching tanks, and should be left on for a short period thereafter. In order to keep the airplane in best lateral trim during cruising flight the fuel should be used alternately from each tank. It is recommended that one tank be used for one hour after takeoff, then the other tank be used for two hours; then return to the first tank, which will have approximately one and one half hours of fuel remaining if the tanks were full at takeoff. The second tank will contain approximately one half hour of fuel. Do not run tanks completely dry in flight. The electric fuel pump should be normally OFF so that any malfunction of the engine driven fuel pump is immediately apparent. If signs of fuel starvation should occur at any time during flight, fuel exhaustion should be suspected, at which time the fuel selector should be immediately positioned to the other tank and the electric fuel pump switched to the ON position.

👉 PIPER ARCHER III PA 28-181 HANDBOOK

👉 PREFLIGHT INSPECTION

👉 MISCELLANEOUS

👉 BEFORE STARTING ENGINE

👉 NORMAL START - COLD ENGINE

👉 NORMAL START - HOT ENGINE

👉 ENGINE START WHEN FLOODED

👉 STARTING WITH EXTERNAL POWER

👉 WARM-UP

👉 TAXIING

👉 GROUND CHECK

👉 BEFORE TAKEOFF