If sufficient altitude has been gained to permit a restart attempt,
maintain a safe airspeed and switch the fuel selector to another tank
containing fuel. Check the electric fuel pump to ensure that it is ON. Check
that the mixture control is set RICH and that carburetor heat is ON. If
engine failure was caused by fuel exhaustion, power will not be regained
after switching tanks until the empty fuel lines are filled. This may require
up to ten seconds.
If the propeller has stopped turning, it will be necessary to engage the
starter to execute a restart. If power is not regained, proceed with a Power
Off Landing.
ENGINE POWER LOSS IN FLIGHT
A complete loss of power is usually caused by a fuel flow interruption,
in which case power will be restored shortly after fuel flow is restored. If
power loss occurs at a low altitude, the first step should be to prepare for an
emergency Power Off Landing. Maintain an airspeed of at least 70 KIAS.
If altitude permits, attempt a restart. Switch the fuel selector to another
tank containing fuel. Turn ON the electric fuel pump, set the mixture RICH,
and turn ON carburetor heat.
Check the engine gauges for an indication of the cause of the power loss.
Be sure that the primer is locked if one is installed. If no fuel pressure is
indicated, check the fuel selector to be sure that it is on a tank containing
fuel. If fuel exhaustion is the problem, it may take up to ten seconds after
switching tanks for empty fuel lines to fill and for power to be restored. If
there is water contamination of the fuel, fuel pressure indications will be
normal. Water in the fuel could take some time to be passed through, and
allowing the propeller to windmill may restore power. If the propeller has
stopped turning, engage the starter.
When power is restored and the engine is operating smoothly, turn OFF
the carburetor heat and the electric fuel pump.
If the preceding steps do not restore power, prepare for an emergency
Power Off Landing. If time permits, try turning the ignition switch to L, then
to R, then back to BOTH. Try moving the throttle and mixture controls to
various 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.
If power is not regained, proceed with preparations for a Power Off
Landing.
SECTION 3
PIPER AIRCRAFT CORPORATION
EMERGENCY PROCEDURES
PA-38-112, TOMAHAWK
REPORT: 2126
ISSUED: JANUARY 20, 1978
3-8
If sufficient altitude has been gained to permit a restart attempt,
maintain a safe airspeed and switch the fuel selector to another tank
containing fuel. Check the electric fuel pump to ensure that it is ON. Check
that the mixture control is set RICH and that carburetor heat is ON. If
engine failure was caused by fuel exhaustion, power will not be regained
after switching tanks until the empty fuel lines are filled. This may require
up to ten seconds.
If the propeller has stopped turning, it will be necessary to engage the
starter to execute a restart. If power is not regained, proceed with a Power
Off Landing.
ENGINE POWER LOSS IN FLIGHT
A complete loss of power is usually caused by a fuel flow interruption,
in which case power will be restored shortly after fuel flow is restored. If
power loss occurs at a low altitude, the first step should be to prepare for an
emergency Power Off Landing. Maintain an airspeed of at least 70 KIAS.
If altitude permits, attempt a restart. Switch the fuel selector to another
tank containing fuel. Turn ON the electric fuel pump, set the mixture RICH,
and turn ON carburetor heat.
Check the engine gauges for an indication of the cause of the power loss.
Be sure that the primer is locked if one is installed. If no fuel pressure is
indicated, check the fuel selector to be sure that it is on a tank containing
fuel. If fuel exhaustion is the problem, it may take up to ten seconds after
switching tanks for empty fuel lines to fill and for power to be restored. If
there is water contamination of the fuel, fuel pressure indications will be
normal. Water in the fuel could take some time to be passed through, and
allowing the propeller to windmill may restore power. If the propeller has
stopped turning, engage the starter.
When power is restored and the engine is operating smoothly, turn OFF
the carburetor heat and the electric fuel pump.
If the preceding steps do not restore power, prepare for an emergency
Power Off Landing. If time permits, try turning the ignition switch to L, then
to R, then back to BOTH. Try moving the throttle and mixture controls to
various 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.
If power is not regained, proceed with preparations for a Power Off
Landing.
SECTION 3
PIPER AIRCRAFT CORPORATION
EMERGENCY PROCEDURES
PA-38-112, TOMAHAWK
REPORT: 2126
ISSUED: JANUARY 20, 1978
3-8