GRUMMAN AMERICAN
FOR TRAINING USE ONLY – SECTION 3
MODEL GA-7/COUGAR
EMERGENCY PROCEDURES
3-23
Issued: April 10, 1978
Attain a safe altitude above terrain before making turns except to avoid obstacles. Land as soon as practical.
ENGINE FAILURE DURING FLIGHT
Adjust power as required to minimize or eliminate altitude loss, keeping airspeed above 85 KIAS. Determine the
inoperative engine (see above).
The advisability of an attempted restart depends on mode of engine failure, altitude, rate-of-descent with a
windmilling engine, and distance to landing site. Check oil pressure and temperature indications. Check fuel
quantity, the position of the fuel selectors, and the fuel pressure indications.
WARNING
LACK OF FUEL PRESSURE ON A WINDMILLING ENGINE MAY BE CAUSED BY A FUEL
LEAK.
To restart, turn the auxiliary fuel pump ON and make sure both Magneto switches are ON. Pull the mixture control
through its full range, observing for engine start. Continue to adjust for smooth operation if the engine starts.
If the inoperative engine will not start, secure it. Refer to SECURING INOPERATIVE ENGINE. After the fuel supply
and auxiliary fuel pump have been shut off, the throttle of the inoperative engine may be advanced far enough to
silence the landing gear warning horn.
Adjust the throttle, propeller, and mixture control on the operating engine as required for best power. Set the fuel
selector to the fullest tank. Adjust the cowl flaps to compensate for increased power, and monitor the cylinder
head and oil temperature.
Adjust the aileron trim for a 5-degree bank toward the operating engine and maintain directional control with the
rudder. The airplane can be trimmed for hands-off flight and sustained in this configuration AS LONG AS THE
REQUIRED 85 KIAS CAN BE MAINTAINED. Land the airplane as soon as it is practical.
SECURING INOPERATIVE ENGINE
Penalties imposed on airspeed and directional control by a windmilling engine are sever and become critical at low
altitudes. Continued flight requires rapid pilot response to maintain lateral and directional control, then to
securing the inoperative engine.
Determine the inoperative engine (see above). Once the correct choice has been made, close the throttle, feather
the propeller, and set the mixture control to idle cutoff. Close the cowl flap and place the Magneto and Alternator
Switches in the OFF positions. Turn the Fuel Selector and Auxiliary Fuel Pump OFF. Advance the inoperative
throttle forward as required to silence the landing gear warning horn.
