Piper SENECA III User Manual

PIPER
AIRCRAFT
CORPORATION
SECTION
7
PA-34-220T,
SENECA
III
DESCRIPTION
&
OPERATION
SECTION 7
DESCRIPTION
AND
OPERATION
OF
THE
AIRPLANE
AND ITS
SYSTEMS
7.1
THE
AIRPLANE
The
Seneca
Ill
is
a
twin-engine,
all metal
retractable
landing
gear,
turbocharged
airplane.
It
has
seating
for
up
to
seven
occupants
and
two
separate
one
hundred
pound luggage
compartments.
7.3
AIRFRAME
The
basic
airframe
is
of
aluminum
alloy with
steel
engine
mounts
and
landing
gear
and
thermo-plastic
or
fiberglass
fairings.
Aerobatics
are
prohibited in
this airplane
since
the
structure
is
not
designed for
aerobatic
loads.
The
fuselage
is
a
semi-monocoque
structure.
There
is afront door
on
the
right
side
and
a
rear
door
on
the
left.
A
cargo
door
is installed
aft
of
the
rear
passenger
door.
Both
rear
doors
may
be
opened
for loading large
pieces
of
cargo.
A
door
on
the
left side
of the
nose
section
gives
access
to
the
nose
section
baggage
compartment.
The
wing
is
of
a
conventional
design
and
employs
a
laminar
flow
NACA
65>415
airfoil
section.
The
main
spar
is
located
at
approximately
40%
of
the
chord
aft of
the
leading edge.
The
wings
are
attached
to
the
fuselage by
the
insertion
of
the
butt
ends
of
the
spar
into
a
spar
box
carry-
through,
which is
an
integral
part
of
the
fuselage
structure.
The
bolting
of
the
spar
ends
into the
spar
box
carry-through
structure,
which
is located
under
the
center
seats,
provides
in
effect
a
continuous main
spar.
The
wings
are
also
attached
fore
and
aft
of
the
main
spar
by
an
auxiliary front
spar
and
a
rear
spar.
The
rear
spar,
in
addition
to
taking
torque
and
drag
loads,
provides
a
mount
for
flaps
and
ailerons.
The
four-position
wing
flaps
are
mechanically
controlled
by
a
handle
located
between
the
front
seats.
When
fully
retracted,
the
right
flap
locks
into
place
to
provide
a
step
for
cabin
ISSUED:
JANUARY 8,
1981
REPORT:
VB-1110
7-1

Piper SENECA III Specifications

General

Manufacturer	Piper Aircraft
Model	Seneca III
Engine Type	Piston
Engine Model	Continental TSIO-360-KB
Seating Capacity	6
Cruise Speed	188 knots (216 mph, 348 km/h)
Length	28 ft 7 in (8.71 m)
Max Takeoff Weight	4, 750 lb (2, 155 kg)
Horsepower	220 hp each
Service Ceiling	25, 000 ft (7, 620 m)
Height	9 ft 11 in (3.02 m)
Propellers	2-bladed constant speed