Primary Flight Controls; Positive Control - Mooney Executive 21 1968 Owner's Manual

Apitot tube, mounted on the lower surface of the left wing,
picks up airspeed indicator r a m a i r . Anoptional heated pitot
prevents pitot tube icing when flying i n moisture- laden
air.
Static ports on each side of the tail cone supply static a i r
p r e s s u r e f o r the altimeter, the airspeed indicator, and the
vertical speed indicator. An optional alternate static pres-
s u r e source valve may be installed.
A s t a l l warning horn, triggered by a sensing vane on the
left wing leading edge, will sound when 'airspeed drops to
near s t a l l speed. Landing gear position lights on the panel
will show r e d when the g e a r is retracted. Reducing power
below
10
inches manifold p r e s s u r e when the gear
is not in
the down- and- locked position will cause the gear warning
horn to sound.
FLlGHT CONTROLS
\
PRIMARY FLIGHT CONTROLS
) I
' .
Push-pull tubes withself-aligning rodend bearings actuate
the p r i m a r y flight control surfaces. Beveled aileron trail-
ing edges help reduce pilot control f o r c e s requiredfor flight
maneuvering. A spring-loaded interconnect device indirect-
ly joins the aileron and rudder controlsystems
to
a s s i s t in
l a t e r a l stability during flight maneuvers. Control surface
gap s t r i p s minimize airflow spoilage a t the hinge s l o t s and
reduce drag.
POSITIVE CONTROL
The Mooney Positive Control (P.C.) system provides a high
degree of roll and yaw stability, thereby enhancing the in-
herent wings- level flight c h a r a c t e r i s t i c s of the aircraft.
Positive Control will hold an average heading over
a
long
periodof time when the a i r c r a f t is t r i m m e d properly. How-
ever, without the installation of a magnetic heading lock,
P,C. will not maintain an absolute preselected heading.