钻石40飞机维护手册 DA 40 SERIES AMM 1(68)

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(8)  Move the airplane a small distance backwards and forwards on the flat top of the ramps.  To allow the landing gear legs to spread. 
(9)  Put a wooden block approximately 52 mm (2 in) thick on the scale in front of each main wheel.  The blocks should be of the same thickness. 
CAUTION: DO NOT ALLOW THE AIRPLANE TO RUN OFF THE SCALES. THIS WILL CAUSE DAMAGE TO THE WHEEL FAIRINGS. 
(10)  Push the airplane forward onto the scales.  Make sure that the wheels are above the center of the scales. 
(11)  Make the airplane level laterally: S Put a spirit level on the horizontal surface of the baggage compartment frame. S If necessary, use additional thin blocks between the scale and the main wheel on the low side to bring the sprit level horizontal.  Refer to Figure 1. Behind the back seats. Push the airplane on and off the scales as necessary. Make sure that you do not touch the airplane when you read the spirit level. 

Page 10 Doc # 6.02.01 09 Jan 2003 Rev. 4
08-10-00
Weighing and Levelling
AMM

DA 40 Series

Detail Steps/Work Items  Key Items/References 
(12)  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 Put thin blocks between the nose wheel and the scale to bring the spirit level horizontal. S Or, if necessary, reduce the air pressure in the nose wheel tire to bring the spirit level horizontal.  Refer to Figure 2. 
(13)  Remove the levelling equipment from the airplane. 
(14)  Put the rear passenger seats in the upright position. 
(15)  Close the passenger door. 
(16)  Read the value from the left main wheel scale. Enter the value on the weighing form under MAIN G1LH Gross. 
(17)  Read the value from the right main wheel scale. Enter the value on the weighing form under MAIN G1RH Gross. 
(18)  Read the value from the nose wheel scale. Enter the value on the weighing form under NOSE G2 Gross. 
(19)  Use the plumb line to mark the position of the reference plane on the floor: S Hold the plumb line against the leading edge of the wing where the wing joins the stub-wing. S Mark this position on the floor. S Draw a straight line between the 2 points you marked on the floor. S Draw a second line 2194 mm (86.38 in) forward of the first line.  Do this on each side. 

08-10-00
AMM

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 wheels)
% 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 
MAIN G1LH 
MAIN G1RH 
NOSE G2 
Empty Weight 

Lever Arm 
X1LH = 
X1RH = 
X2 = 

Calculate the Empty Weight, G = MAIN G1LH + MAIN G1RH + NOSE G2.  G = 
Calculate the Empty Weight Moment, M = (G1LH * X1LH)+( G1RH * X1RH) + (G2 * X2).  M = 
Calculate the Empty Weight Center-of-Gravity position, XCG = M/G.  XCG = 
Maximum permitted all-up-weight: Max AUW.  1150 kg (2535 lb.) 
Maximum useful load = Max AUW - G. 

Record the Empty Weight (G) and the Empty-Weight Moment (M) in the Airplane Flight Manual.
　
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