GRUMMAN AMERICAN
FOR TRAINING USE ONLY – SECTION 4
MODEL GA-7/COUGAR
NORMAL PROCEDURES
4-24
Issued: April 10, 1978
NOISE ABATEMENT
Every practical effort should be made to reduce airplane noise at ground level near recreational, residential, and
other noise-sensitive areas. When practical, maintain at least 2000 feet above ground level. Avoid prolonged low-
level flight after takeoff and before landing.
NOTE
The above procedures do not apply if they conflict with safety of flight
requirements, or Air Traffic Control regulations, clearances, or instructions.
MULTI-ENGINE TRAINING PROCEDURES
SIMULATED ONE ENGINE INOPERATIVE (ZERO THRUST, SIMULATED FEATHER)
When establishing zero thrust operation, use the power setting listed below. By using this power setting to
establish zero thrust, you avoid the inherent difficulties of restarting a shut down engine and preserve almost
instant power to counter any attendant hazard. To set up a zero thrust condition make the following settings:
1.
Propeller Control – Retard to feather detent (approximately 2000 RPM).
2.
Throttle Control – Set 12 in. Hg. manifold pressure.
NOTE
This setting will approximate zero thrust using recommended one-engine
inoperative climb speeds.
MINIMUM CONTROL AIRSPEED (V
MCA
) TRAINING PROCEDURE (ONE ENGINE INOPERATIVE)
Single engine minimum control airspeed (V
MCA
) demonstration may be required for multiengine pilot certification.
The demonstration shall be conducted at a safe altitude of at least 5000 feet AGL and in clear air only.
Use the following procedure in the practice of V
MCA
:
1.
Landing gear – Up.
2.
Flaps – Up.
3.
Airspeed – 85 KIAS.
4.
Propeller levers – Full forward.
5.
Throttle (Simulated inoperative engine) – Idle.
6.
Throttle (Operative engine) – Full throttle.
7.
Airspeed – Reduce approximately 1 knot per second until either V
MCA
or a stall buffet is obtained.
NOTE
Using the rudder and ailerons to maintain directional and lateral control, a bank
of 5° toward the operative engine should be maintained. The recovery should
be initiated at the first sign of either V
MCA
or stall (which may be evidenced by
inability to maintain heading, lateral attitude, or aerodynamic stall buffet).
8.
Recovery – Reduce operative engine power to idle, immediately lower the nose to regain airspeed.
9.
Throttles – Add power on both engines to return to normal flight.
