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Main Jack Trestle Main Jack
Tail Jacking Point
Trestle

Figure 1: Lifting the Airplane on Jacks
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Lifting and Shoring
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B. Lifting the Airplane
DA 40 Series

Detail Steps/Work Items  Key Items/References 
CAUTION: IF THE AIRPLANE IS IN THE OPEN THEN ALIGN IT INTO THE WIND. MAXIMUM WIND SPEED: 10 KM/H (6 KTS). 
(1)  Apply the parking brake. Put chocks under the main wheels. 
(2)  Put the 2 jacks in position under the main jacking points. Extend the jacks to engage with the jacking plates.  Refer to Figure 1. The jacking plates are bonded to the bottom surface of the stub wing, forward of the front main spar. 
(3)  Put the a jack in position under the tail jacking point. Extend the jack to engage with the lower fin skid plate. 
(4)  Extend the jacks until the wheels are clear of the ground.  Operate the jacks together to keep the airplane level. 
(5)  If necessary, level the airplane.  Refer to Section 08-20. 
CAUTION: DO NOT PUT TRESTLES UNDER THE MIDDLE OF THE WING. YOU MUST ONLY PUT TRESTLES AT THE TIPS OF THE WINGS. 
(6)  Put the wing trestles in position under each wing at the tip.  Refer to Figure 1. 
(7)  Put the nose trestle in position under the front fuselage.  Just aft of the access panel for the nose gear leg. 

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C. Lowering the Airplane
Detail Steps/Work Items  Key Items/References 
WARNING: MAKE SURE THAT THE AREA UNDER THE AIRPLANE IS CLEAR BEFORE YOU LOWER THE AIRPLANE. 
(1)  Remove the nose trestle from under the fuselage. 
(2)  Remove the wing trestles from under the wings. 
(3)  Retract the jacks until the wheels are on the ground.  Retract the three jacks equally to keep the airplane level. 
(4)  Apply the parking brake. Put chocks under the wheels. 
(5)  Retract the 3 jacks fully. Move the jacks clear of the airplane. 

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Weighing and Levelling
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CHAPTER 08
 WEIGHING AND LEVELLING

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Weighing and Levelling
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TABLE OF CONTENTS
CHAPTER 08
WEIGHING AND LEVELLING

1. General ..............................................1

Section 08-10
Weighing

1.
General ..............................................1

2.
Weighing with Electronic Weighing Units at the Jacking Points ....3

3.
Weighing with Mechanical Scales Under the Wheels............9

Section 08-20
Levelling

1.
General ..............................................1

2.
Make the Airplane Level with Jacks .........................1

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Weighing and Levelling
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CHAPTER 08
WEIGHING AND LEVELLING

1. General
This Chapter tells you how to weigh the airplane. It also tells you how to level the airplane. Use the procedures in Section 08-10 to weigh the airplane and to calculate the airplane moment. Use the procedures in Section 08-20 to level the airplane.
Note:  In this Airplane Maintenance Manual masses are referred to as weights. The authors accept that this is technically incorrect but have used the expression for simplicity and convenience.
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