Diamond DA 42 Flight Manual page 307

DA 42 AFM
Flaps
The flaps are a two piece construction. The inner part of the flap is mounted to the center
wing and the outer part to the wing. Both parts are connected to each other with a form
fit connection.
Construction: GFRP/CFRP composite sandwich.
Hinges: There are 6 hinges at the outer part and 4 hinges at the inner part of the
flap. These hinges are hinge pins mounted in an aluminum bracket. They
are secured in position by a roll pin. The absence of this roll pin can lead
to the loss of the hinge pin and a consequent loss of flight safety.
Operation: Each part is connected with a flap control horn to the push rods of the
flap control system. A rod end bearing is screwed into a steel push rod
and locked by means of a jam nut which has locking varnish applied to
it. Damage to this varnish can indicate a twisting and thus a change to
the adjustment. The connection between the rod end bearing and the
control horn is a bolt, the nut of which is likewise sealed with locking
varnish.
Each flap control horn is attached to the flap part with 3 screws.
The flaps are driven by an electric motor and have 3 settings:
- Cruise (UP), totally retracted
- Approach (APP), and
- Landing (LDG).
Doc. No. 7.01.05-E Rev. 8 15-Dec-2017
Airplane Description
Page 7 - 5