09/11/2018
RANS S-21 OUTBOUND
TEXT MANUAL
170
WEIGHT AND BALANCE
INTRODUCTION
This Section describes the basic procedures for establishing of basic empty weight and
moment of the airplane. Refer to
SECTION 13
for complete Weight & Balance
information.
Procedures for calculating the weight and moment for various loadings are also
provided. Sample forms are provided for reference.
NOTE:
both trike and taildragger versions are available in the FIGURES
manual.
Always check your weight and balance during your pre-flight planning. It is
recommended to check the data for landing and takeoff due to fuel weight change.
It is the responsibility of the pilot to ensure that the airplane is loaded properly.
AIRPLANE WEIGHING PROCEDURES
4.
Preparation:
•
Inflate tires to recommended operating pressure
•
Parking brakes set
•
Drain all fuel
•
Service engine oil as required to obtain a normal indication
•
Move seats to the most aft position
•
Retract flaps
•
Place all control surfaces in neutral position
5.
Leveling:
TAILDRAGGER
•
Raise tail to measure 90º at aft door frame. Refer to
FIGURE 13-02
. For
optional 10" tailwheel refer to
FIGURE 13-02A
.
(A stand between tailwheel and scale is required).
•
Place scales under each wheel (500 lb. minimum capacity is
recommended)
TRIKE
•
Shim scales to measure 90º at aft door frame. Refer to
FIGURE 13-03
.