POH 4.4 Systems - Airplane & Airframe

Question 1

The airplane

Answer 1

Seneca II:

Twin-engine
- all metal
- retractable landing gear
- turbocharged airplane

Combines:
- multi-engine safety and efficiency
- spacious and comfortable cabin
- Piper’s traditional smooth, easy handling characteristics.

Seating:

• Up to seven occupants

Lugagge:

• Two separates one-hundred-pound luggage compartments

Fuel capacity:

• 98 gallons

Question 2

Airframe

Answer 2

Except:

-steel engine mounts and landing gear,

• reinforced fiberglass nose cone and cowling nose bowls
• lightweight plastic extremities (tips of wings, tail fin, rudder and stabilator)

the basic airframe is of heat treated, corrosion resistant aluminum alloy.

Aerobatics are prohibited

Question 3

Fuselage

Answer 3

semi-monocoque structure

Question 4

Doors

Answer 4

Front door on the right side and a rear door on the left.

cargo door is installed aft of the rear passenger door.

door on the left side of the nose section gives access to the nose section baggage compartment.

Question 5

Wing

Answer 5

conventional design

laminar flow NACA 652-415 airfoil section.

Question 6

main spar

Answer 6

located at approximately 40% of the chord aft of the leading edge

Question 7

Attachment of wings

Answer 7

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.

also attached fore and aft of the main spar by an auxiliary front spar and a rear spar

Question 8

Bolting of the spar

Answer 8

ends into the spar box carry-through structure, which is located under the center seats, provides in effect a continuous main spar.

Question 9

rear spar

Answer 9

in addition to taking torque and drag loads, provides a mount for flaps and ailerons

Question 10

Flaps

Answer 10

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 entry.

Question 11

Fuel tanks

Answer 11

Each wing contains two fuel tanks as standard equipment

An optional third tank may be installed on each side.

Question 12

Filling of the tanks

Answer 12

The tanks on one side are filled through a single filler neck located well outboard of the engine nacelle.

Question 13

Empennage

Answer 13

vertical stabilizer, an all-movable horizontal stabilator, and a rudder

Question 14

Stabilator

Answer 14

corporates an anti-servo tab which improves longitudinal stability and provides longitudinal trim

It moves in the same direction as the stabilator, but with increased travel.

Rudder effectiveness is increased by an anti-servo tab on the rudder.