Pilots Operating Handbook
43/76
YL-MFG
Revision 7, Issue 1
4/6/2016
6 Weight and Balance
6.1
Introduction
This section describes the procedure for establishing the basic empty weight and moment of the
airplane. Sample forms are provided for reference. Procedures for calculating the weight and
moment for various operations are also provided.
WARNING: It is the responsibility of the pilot to make sure the airplane is loaded
properly. Operation outside of prescribed weight and balance limitations could result in
an accident and serious or fatal injury.
•
The Weight and Balance Datum is located 1050 mm in front of the propeller spinner tip.
•
The Design CG Range of 9-30% of Mean Average Wing Chord (MAC) or
3499 - 3760
mm
aft of datum. The length of MAC is 1243 mm.
•
The nose wheel center is located 2048 mm aft of datum and main gear wheel center is 3934
mm aft of datum.
6.2
Airplane Weighing Procedures
1. Preparation:
a. Inflate tires to recommended operating pressures.
b. Defuel airplane. Refer to the Maintenance Manual.
c. Service engine oil and coolant as required to obtain a normal full indication.
d. Raise flaps to the fully retracted position.
e. Place all control surfaces in neutral position.
f. Remove all non-required items from airplane.
2. Leveling:
a. Place scales under each wheel (minimum scale capacity, 250 kg).
b. Place the level on the edge of the cockpit and/or the main spar lower surface.
c. Deflate the nose tire to properly center the bubble in the level.