RANS S-20 RAVEN
TEXT MANUAL
13B-1
09/01/2013
13B - WEIGHT AND BALANCE
INTRODUCTION
This Section describes the basic procedures for establishing of basic empty
weight and moment of the airplane. Refer to
SECTION 12
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
1. 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
2. Leveling:
TAILDRAGGER
•
Raise tail to level door frame longeron. Refer to
FIGURE 12-01
.
For optional 10" tailwheel refer to
FIGURE 12-01B
.
(A stand between tail wheel and scale is required).
•
Place scales under each wheel (360 lb. minimum capacity)
TRIKE
•
Shim scales to level door frame longeron. Refer to
FIGURE
12-01A
.
•
Place scales under each wheel (360 lb. minimum capacity)
3. Weighing:
•
With the airplane level, record the weight shown on each scale and
subtract the weight of the leveling device from the weight indicated
at the tail wheel.
