SECTION 3
PIPER AIRCRAFT CORPORATION
EMERGENCY PROCEDURES
PA-28-161, CHEROKEE WARRIOR II
3.11 ENGINE POWER LOSS IN FLIGHT
Complete engine power loss is usually caused by fuel flow interruption and power will be restored
shortly after fuel flow is restored. If power loss occurs at a low altitude, the first step is to prepare for an
emergency landing (refer to paragraph 3.13). An airspeed of at least 73 KIAS should be maintained.
If altitude permits, switch the fuel selector to another tank containing fuel and turn the electric fuel
pump “ON.” Move the mixture control to “RICH” and the carburetor heat to “ON.” Check the engine
gauges for an indication of the cause of the power loss. Check to insure the primer is locked. If no fuel
pressure is indicated, check the tank selector position to be sure it is on a tank containing fuel.
When power is restored move the carburetor heat to the “OFF” position and turn “OFF” the electric
fuel pump.
If the preceding steps do not restore power, prepare for an emergency landing.
If time permits, turn the ignition switch to “L” then to “R” then back to “BOTH.” Move the throttle
and mixture control levers to different settings. This may restore power if the problem is too rich or too
lean a mixture or if there is a partial fuel system restriction. Try other fuel tanks. Water in the fuel could
take some time to be used up, and allowing the engine to windmill may restore power. If power loss is due
to water, fuel pressure indications will be normal.
If engine failure was caused by fuel exhaustion power will not be restored after switching fuel tanks
until the empty fuel lines are filled. This may require up to ten seconds.
If power is not regained, proceed with the Power Off Landing procedure (refer to the emergency
check list and paragraph 3.13).
3.13 POWER OFF LANDING
If loss of power occurs at altitude, trim the aircraft for best gliding angle (73 KIAS) and look for a
suitable field. If measures taken to restore power are not effective, and if time permits, check your charts
for airports in the immediate vicinity; it may be possible to land at one if you have sufficient altitude. If
possible, notify the FAA by radio of your difficulty and intentions. If another pilot or passenger is aboard,
let him help.
When you have located a suitable field, establish a spiral pattern around this field. Try to be at 1000
feet above the field at the downwind position, to make a normal landing approach. When the field can
easily be reached, slow to 63 KIAS for the shortest landing. Excess altitude may be lost by widening your
pattern, using flaps or slipping, or a combination of these.
Touchdown should normally be made at the lowest possible airspeed.
When committed to a landing shut “OFF” the master and ignition switches. Flaps may be used as
desired. Turn the fuel selector valve to “OFF” and move the mixture to idle cut-off. The seat belts and
shoulder harness should be tightened. Touchdown should be normally made at the lowest possible airspeed.
REPORT: VB-880
ISSUED: DECEMBER 16, 1976
3-8
Содержание CHEROKEE WARRIOR II
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