'ikechcraft
Twin Engine (Piston)
Section X
Safety Information
preflight inspection. Improper tension on the control cables
or any other loose condition in the flight control system can
also cause or contribute to flutter. Pilots should pay particu-
lar attention to control surface attachment hardware includ-
ing tab pushrod attachment during preflight inspection.
Looseness of fixed surfaces or movement of control sur-
faces other than in the normal direction of travel should be
rectified before flight. Further, owners should take their air
..
planes to mechanics who have access to current technical
publications and prior experience in properly maintaining
that make and model of airplane. The owner should make
certain that control cable tension inspections are performed
as outlined in the applicable Beech Inspection Guide. Worn
control surface attachment hardware must be replaced. Any
repainting or repair of a moveable control surface will
require a verification of the control surface balance before
the airplane is returned to service. Control surface drain
holes must be open to prevent freezing of accumulated
moisture, which could create an increased trailing-edge
..
heavy control surface and flutter.
If an excessive vibration, particularly in the control column
and rudder pedals, is encountered in flight, this may be the
onset of flutter and the procedure to follow is:
1. IMMEDIATELY REDUCE AIRSPEED (lower the land-
ing gear, if necessary).
2. RESTRAIN THE CONTROLS OF THE AIRPLANE
UNTIL THE VIBRATION CEASES.
3. FLY AT THE REDUCED AIRSPEED AND LAND AT
THE NEAREST SUITABLE AIRPORT.
4. HAVE THE AIRPLANE INSPECTED FOR AIRFRAME
DAMAGE, CONTROL SURFACE ATTACHING HARD-
WARE CONDITION/SECURITY, TRIM TAB FREE
PLAY, PROPER CONTROL CABLE TENSION, AND
CONTROL
SURFACE
BALANCE BY ANOTHER
MECHANIC WHO IS FULLY QUALIFIED.
May, 1994
10..27
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