Pipistrel 890 AT 912 LSA, Pilot'S Operating Handbook And Flight Training Supplement, Page: 54 / 96

ALPHA Trainer
www.pipistrel-aircraft.com
REV. 0
POH-162-00-40-050
Introduction
This section describes the procedure for establishing the basic empty weight and moment of the air-
plane. Sample calculations are provided for reference.
Specific information regarding the weight and arm for this airplane as delivered from the factory can
be found in the aircraft documentation folder, look for Weight and Balance Report.
WARNING!
It is the responsibility of the pilot to make sure the airplane is loaded properly.
Operation outside of the prescribed weight and balance limitations could result in an accident
and serious or fatal injury.
Weighing procedure
Make sure all listed aircraft parts and appliances are installed and in position.
Remove all other objects (e.g. tools, rugs, tie downs and other items ...).
Empty fuel tanks except for the unusable fuel, inflate tires to recommended operating pressures.
Fill up engine oil to the top marking.
Retract flaps and leave control surfaces centered.
Level the aircraft inside a closed space - use the leveling tool positioned on the tail cone and make
sure its straight edge is level (horizontal).
Once leveled, read the scale readings and subtract eventual tare weight.
Now record all readings and fill out the bottom table.
The datum is the wing’s leading edge at the fuselage root. Calculate the lever arm of CG using this
formula:
Lever arm of CG (X) =
Weighing form
Weighing point and symbol Scale reading Tare Net
Right main wheel (G
R
)
Left main wheel (G
L
)
G
1
= G
R
+ G
L
Nose wheel (G
2
)
Total (G = G
R
+ G
L
+G
2
)
Weight and balance
6-2
R
( )
( ) ( )
-
275
-
-
306
-