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(1) Make a copy of the Weighing Report form. Refer to Figure 4.
(2) Put the electrical weighing units in position on the
jacks.
Refer to the weighing unit
manufacturer‘s instructions.
(3) Zero the electrical weighing units. Refer to the weighing unit
manufacturer‘s instructions.
(4) Lift the airplane on jacks. Refer to Section 07-10.
(5) Make the airplane level laterally:
S Put a spirit level on the horizontal surface of
the baggage compartment frame.
S Adjust the main jacks to bring the sprit level
horizontal.
Refer to Figure 1.
Behind the back seats. Make sure that
you do not touch the airplane when you
read the spirit level.
(6) Make the airplane level longitudinally:
S Place a wedge on the rear fuselage with the
thin end forward.
S Place a spirit level on the wedge.
S Adjust the tail jack to bring the spirit level
horizontal.
Refer to Figure 2.
(7) Remove the levelling equipment from the
airplane.
(8) Put the rear passenger seats in the upright
position.
(9) Close the canopy and the passenger door.
(10) Read the value from the left main jack weighing
unit. Enter the value on the Weighing Report
under MAIN G1LH Gross.
(11) Read the value from the right main jack weighing
unit. Enter the value on the Weighing Report
under MAIN G1RH Gross.
AIRCRAFT
Weighing and Levelling
DA 40 Series
AMM
Page 6
20 Sep 2007 08-10-00 Doc # 6.02.01
Rev. 5
WEIGHING REPORT
Model: DA 40 Serial Number:___________ Registration:_____________
Data with reference to the Type Certificate Data Sheet and the Airplane Flight Manual.
Reference Plane: Vertical plane 2194 mm (86.38 in) in front of the leading edge of wing at
the root rib.
Horizontal reference line: Wedge 600:31 (2.96°), 2910 mm (114.57 in) aft of the step in the cockpit
rim.
Equipment Inventory - dated:_______ Cause for Weighing:_______________________________
Weight and Balance Calculations (Weighing at the jacking points)
Weight Condition: Including brake fluid, engine oil (MAX level), coolant (TAE version only), and
unusable fuel (Lycoming: 2 x 0.5 US gal / 2 x 1.9 liters; TAE: 2 x 1 US gal / 2 x 3.8
liters).
Support Gross Tare Net Lever Arm
MAIN G1LH X1 = 2394 mm
(94.25 in)
MAIN G1RH X2 = 7312 mm
(287.87 in)
TAIL G2
Empty Weight
Calculate the Empty Weight, G = MAIN G1LH + MAIN G1RH + TAIL G2. G =
Calculate the Empty Weight Moment, M = ((G1LH + G1RH) * X1) + (G2 * X2). M =
Calculate the Empty Weight Center-of-Gravity position, XCG = M/G. XCG =
% Maximum permitted all-up-weight: Max AUW (see AFM)
Maximum useful load = Max AUW - G.
Record the Empty Weight (G) and the Empty-Weight Moment (M) in the Airplane Flight Manual.
Place/Date Authorizing Stamp Authorizing Signature
Figure 4: Weighing Report for Electronic Weighing Units at the Jacking Points
AIRCRAFT
DA 40 Series
AMM
Weighing and Levelling
Doc # 6.02.01
Rev. 5 08-10-00 Page 7
20 Sep 2007
Detail Steps/Work Items Key Items/References
(12) Read the value from the tail jack weighing unit.
Enter the value on the Weighing Report under
TAIL G2 Gross.
(13) Refer to the calibration records for the electrical
weighing units. If necessary, correct the Gross
values of MAIN G1LH, MAIN G1RH, and TAIL G2.
(14) Lower the airplane with the jacks. Refer to Section 07-10.
(15) If you have used adaptors between the weighing
units and the jacking points, and these adaptors
were not placed on the weighing units during
zeroing (step 3), then record the weight of them
under Tare in the related column.
(16) Subtract each Tare value from the related Gross
value. Record the result under Net in the
Weighing Report.
(17) Calculate the Empty Weight, G. G = Net G1LH + Net G1RH + Net G2
(18) Calculate the Empty Weight Moment, M. M = ((G1LH + G1RH) * X1) + (G2 * X2)
(19) Calculate the position of the Empty Weight
Center-of-Gravity, XCG.
XCG = M/G
(20) Record the Empty Weight (G) and the Empty
Weight Moment (M) in the Airplane Flight Manual.
AIRCRAFT
Weighing and Levelling
DA 40 Series
AMM
Page 8
20 Sep 2007 08-10-00 Doc # 6.02.01
Rev. 5
X1LH
X1RH
X2
Arm - Empty Weight XCG
G1
G2
Reference Plane
2194 mm
Main Ramps 52 mm (2 in) Higher than Nose Scale
Ramp same Height as Nose Scale
Blocks to Make Total Height 52 mm (2 in)
Higher than the Nose Scale
(86.38 in)
Legend:
X1 = Arm, Reference Plane to center line of main wheels.
X2 = Arm, Reference Plane to center line of nose wheel.
　
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