钻石40飞机维护手册 DA 40 SERIES AMM 1(66)

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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. 

Doc # 6.02.01 Page 5
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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 
MAIN G1LH 
MAIN G1RH 
TAIL G2 
Empty Weight 

Lever Arm 
X1 = 2394 mm (94.25 in) 
X2 = 7312 mm (287.87 in) 

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.  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.
Place/Date  Authorizing Stamp  Authorizing Signature 

Page 6 Doc # 6.02.01 09 Jan 2003 Rev. 4
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Weighing and Levelling
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Figure 4: Weighing Report for Electronic Weighing Units at the Jacking Points
DA 40 Series

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. 
　
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