Table of Contents
Advertisement
PART II
AIRFRAME
2 .1
GENERAL
This section
is devoted to the maintenance
of
the various
components of
the airframe
group,
in
-
cluding
the fuselage, tail
group, control surfaces
and
systems,
wing
sections
and landing
gear.
2.2
FUSELAGE
The fuselage is all
-
metal
semimonocoque con-
struction
and is divided
into the
following
sections:
nose baggage compartment, pilot
and
passenger
compartment,
rear baggage
compartment and
fuse
-
lage tail
section. Carry-through structure vf
the
center -wing section
passes through the lower
section
of the
fuselage
and is
attached to the fuse lage by
shear
connections that
can be removed to detach the
center section (see
Figure 2-1).
2.2.1
Pilot and
Passenger Compartment
-
The
cabin
compartment is arranged
to
accommodate six
persons, three
in
each
seat.
The
front seat is arranged
to accommodate the pilot on
the left, an assist
pilot in the center and
one
passen-
ger on
the right.
The left two-thirds of the front seat
is
adjustable
to fit the requirements of the pilot.
The right third of
front
seat
is hinged so that it will
pivot forward on a skewed
axis to permit access to
the
rear
passenger seat.
The
control console
is
mounted in
the
instrument
panel slightly to the left
of
center and contains the control
column,
engine
control
levers and
aileron and rudder tab
contr ol
s
and position indicators.
2.2.2
Cabin
Entrance Door -
Entrance
to the cabin is made through a
large door on the right-hand side
of the fuselage.
A
wing walkway
and an automatic, e lectrically-
retracted step complete the entrance
to the cabin.
The door is of
all-metal
construction,
the door
skin
spotwelded to the channel-type
frame. The lever -
type door handle
and
the
hinges are
flush-mounted
so the door is completely
flush with the fuselage
skin when closed.
2.2.2.1
Removal
-
(a)
With
the
door in
a
nearly-closed
position
,
press
down on
the portion of
the
s top rod
that ex
-
tends into
the door until t
h
e stop
r
od
can
be
r
e
m oved
from its
track.
(b)
Remove upholstery
for war
d of
door
jamb
to
gain
access
to the door hinges.
(c)
With
one
man supporting the door
on
t
he
outside,
remove
the door hinge pins.
2.2.2.2
Minor Repairs a nd
Part
s Replacements
-
(a)
Replace
wor
n or
damaged
door weathe
r
seal.
The weather seal m ust fit
smoot
hly
around
the entire
door to p
r
event air le
a
ks.
(b)
Replace
worn
or dam
a ged
hinges or door
latch.
(c)
Repa ir
s
to t he
d oor
s
kin m
ay
b
e
m
a de by
approved methods
for
s kin repairs.
1
2.2.2.3
(a)
pins.
(b)
Ins
tallation
-
Position door and align
holes for the hinge
Install the hinge pins and
safety.
(c)
With the door in the nearly
closed posi-
tion,
press the door
stop
rod down far
enough to
allow
the
end of
the rod to
enter
the door
stop track.
2.2.2.4
Adjustments
-
Several adjustments
are available
to
assure
proper
closing and sealing of the
door.
(a)
If the door does not
close tightly or
per
-
mits air leaks when
completely closed (with door
seals
in
good
condition), it
is
probably due
to insuffi-
cient tension on the aft door latch and may
be
cor
r
ected by loosening the four retaining
screws and
moving the latch tongue guide
outboard to create
additional tension
on
the l atch tongue.
(b)
Air leaks a
r ound
the upper portion
of the
door
may be c
aused
by inad
equa
te tension
on the
upp
er door latch. This may be corrected by remov-
ing the
sma
ll
upholster
y p anel above the door
window
and shor
tening the
upper
latc
h contr
ol wire
suffi-
ciently to
pr oper
ly seal the
d oor.
(c)
Sagging
or improp
e
r f
itting of the door may
be
corr ected
by adding t hin
shim
s
under
the
lower
hinge
to
r aise
the
aft p or tion of
the
door
.
2,2 .3
Cabin Windows
a nd
Windshield -
The windows
and windshield ar
e formed
of
clear
acrylic plas tic
and
made
up in
s
e ven r
emovable
sections
.
The
r ear windows are
hing
ed a
t
the
top so
t hey may be opene
d on
the
ground f or
additional
cooling
.
The
lower
stop
is
readily removable so the
r ear window
may be ope ne
d
fully
for
e
m
e
r
gency
exit.
A lock
is
pr ovided on the lower
stop to
pr
event
the window b
eing
opened
inadvertently in flight.
2 .2
.3.1
R
e
moval -
(a
)
R
e
m ov
e
sheet metal scr ews
attaching the
inner trim
s
trip a nd remove the trim str ip.
(b)
Wit
h
one
man
working
inside
and one out-
side
r em ov
e t he
flush
ty
pe machine screws r
etain-
ing the
frame.
(c
)
Re move
window and frame. Care
must
be
used
whe
n
bre aking
window seals not t
o
break
or
damage
the plastic of the window.
2
.2 .3
.2
Installation -
(a
)
C
lean window frame and skin around
win
-
dow or windshield
opening
to
a
ssure satisfactor
y
sealing
of new
window.
NOTE
New
windows
or windshield will require
fitt
ing
which
mus
t be
acc
omplished before
applying
ce
m
ent.
(b)
Apply thin coat of
sealing
cement
,
Minne
s ota
Mining
and
Manufacturing Co.,
EC-870
,
Advertisement
Table of Contents
