2
st
Edition, April 22
th
, 2008
P2002 Sierra
M A I N T E N A N C E M A N U A L
SECTION C
AIRFRAME
pag.
C-7
If control stick should feel unusually hard, reduce cable tension as this may be
the primary cause for malfunction; also check that pulleys and other parts of the
link system positioned under seats are properly greased.
If control stiffness persists, check integrity of bellcranks and pulleys and insure
that cable has not come off pulleys.
Alignment of moving surfaces with wing must be done using outboard trailing
edge as reference. Further lateral corrections (aircraft leans to one side) may be
carried out adjusting trim tab located on left aileron trailing edge.
3.
HORIZONTAL TAIL
The horizontal tail is an all-moving type, that is, the stabilizer and elevator form
a single, uniform plane called stabilator that rotates about an axis normal to fuse-
lage at the desired pitch setting.
The stabilator structure (see fig.C-6) is made-up by an aluminium spar (1) to
which a series of ribs (2) are riveted. It is covered by aluminium panels (3).
A trim tab (4) provides stick force adjustment and longitudinal compensation
through an electric actuator controlled by pilot. Tab is split in two parts intercon-
nected at the support brackets (5) and attached to the stabilator through four ex-
ternal hinges (6) that allow for immediate inspection.
F
IGURE
C-6
S
TABILATOR
1
2
3
4
6
6
5
7