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Four ribs hold the fuel tanks in each wing. Each rib is a GFRP molding with a large oval hole. The
hole has a flat inner flange to hold the tank. The ribs bond to the top and bottom shells, the aft face
of the front spar and the front face of the rear spar.
E. Flap and Aileron Control Ribs
Each wing has two flap and one aileron control rib. The ribs are GFRP moldings. Each rib has a
bend with a solid insert. The insert gives extra strength where the control bellcrank attaches. The
ribs bond to the top and bottom shells, the aft face of the rear spar and the rear web.
F. Rear Web
Each wing has a rear web. The web closes the trailing edge of the wing. The web bonds to the top
and bottom shells. It also bonds to the rear faces of the rear root rib, the flap control ribs and the
aileron control rib. The rear web has extra layers where the flap and aileron hinges attach. Rivets
hold anchor-nut plates to the forward face of the rear web where the hinges attach.
G. Wing End Rib
Each wing has an end rib. The end rib is a GFRP molding. The end rib has eight anchor-nuts which
attach the wing tip. It also has a threaded strong-point for a tie-down ring.
H. Wing Tip
The wing tip is a GFRP molding with top and bottom shells. The wing tip holds the external lights.
AIRCRAFT
DA 40 Series
AMM
Wings
Doc # 6.02.01
Rev. 5 57-10-00 Page 201
20 Sep 2007
Maintenance Practices
1. General
These maintenance practices tell you how to remove and install the wings. They also tell you how to
remove and install the wing tips and other small components.
2. Remove/Install the Wings
A. Equipment
Item Quantity Part Number
Padded wing trestles. 4 Commercial.
Main bolt removal tool. 1 -
Wing stand (not essential). 1 per wing Commercial.
AIRCRAFT
Wings DA 40 Series
AMM
Page 202
20 Sep 2007 57-10-00 Doc # 6.02.01
Rev. 5
B. Remove the Wings
Use this procedure to remove the left wing or the right wing. Where a part of the procedure applies
to only one wing it will tell you so.
Detail Steps/Work Items Key Items/References
WARNING: MAKE SURE THAT THE AREA AROUND THE FLAPS IS CLEAR OF
PERSONS AND EQUIPMENT BEFORE YOU LOWER THE FLAPS. IF
NOT, THE FLAPS CAN INJURE PERSONS OR BE DAMAGED BY
EQUIPMENT.
(1) Lower the flaps.
(2) Disconnect the battery. Refer to Section 24-31 (Lycoming
version) or 24-34 (TAE version).
(3) Defuel the airplane. Refer to Section 12-10.
(4) Remove these items for access:
S The left/right pilots’ seats
S Main landing gear access panel.
S Center section rear access panel.
S Inboard fuel tank access panel.
As necessary. Refer to Section 25-10.
AIRCRAFT
DA 40 Series
AMM
Wings
Doc # 6.02.01
Rev. 5 57-10-00 Page 203
20 Sep 2007
Detail Steps/Work Items Key Items/References
(5) Put trestles under both wing tips. Under the end rib.
(6) Disconnect the flap push-rod:
S Remove the nut, washer and bolt.
At the wing root.
Through the center section rear panel.
(7) Disconnect the aileron push-rod:
S Remove the nut, washer and bolt.
At the wing root.
Through the center section rear panel.
(8) Disconnect the electrical connector in the wing
harness.
Left wing: connector P2400, under the
pilot's seat.
Right wing: connector P2401, under the
co-pilot's seat.
(9) Disconnect these items under the left pilot’s seat:
S The Pitot hose.
S The static hose.
S The stall warning hose.
For left wing only.
The hose is 8 mm (5/16 in) diameter.
(Green color).
The hose is 8 mm (5/16 in) diameter.
(Purple color).
The hose is 10 mm (3/8 in) diameter.
(Transparent).
WARNING: DO NOT GET FUEL ON YOU. FUEL CAN CAUSE DISEASE.
WARNING: DO NOT ALLOW FIRE NEAR FUEL. FUEL BURNS AND CAN CAUSE
INJURY TO PERSONS AND DAMAGE TO EQUIPMENT.
(10) Disconnect the fuel hose(s) in the stub wing. Put a container to catch a small quantity
of fuel. Remove spilt fuel.
(11) Remove the locking tube from the inboard and
outboard main bolts:
S Remove the nut, washer and bolt.
S Move the tube over the long end piece.
S Remove the short end piece.
S Remove the tube and the long end piece.
AIRCRAFT
Wings DA 40 Series
AMM
Page 204
20 Sep 2007 57-10-00 Doc # 6.02.01
Rev. 5
Locking Tube
Short
End-Piece
Long
End-Piece
Rear
Main Bolt
Front
Main Bolt
Front Spar
Rear Spar
Rear Main Bulkhead Bushes
Front Main Bulkhead
Bushes
Spar Bush
Spar Bush
Locking Bolt
　
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