CIRRUS DESIGN SR20, Pilot Operating Handbook

Page: 159 / 508

P/N 11934-003 6-7
Cirrus Design Section 6
SR20 Weight & Balance
Airplane Weighing Procedures
A basic empty weight and center of gravity were established for this
airplane when the airplane was weighed just prior to initial delivery.
However, major modifications, loss of records, addition or relocation of
equipment, accomplishment of service bulletins, and weight gain over
time may require re-weighing to keep the basic empty weight and
center of gravity current. The frequency of weighing is determined by
the operator. All changes to the basic empty weight and center of
gravity are the responsibility of the operator.
Refer to Section 8 for
specific servicing procedures.
1. Preparation:
a. Inflate tires to recommended operating pressures.
b. Service brake reservoir.
c. Drain fuel system.
d. Service engine oil.
e. Move crew seats to the most forward position.
f. Raise flaps to the fully retracted position.
g. Place all control surfaces in neutral position.
h. Verify equipment installation and location by comparison to
equipment list.
2. Leveling (Figure 6-2):
a. Level longitudinally with a spirit level placed on the pilot door
sill and laterally with of a spirit level placed across the door
sills. (See Figure 6-2) Alternately, level airplane by sighting
the forward and aft tool holes along waterline 95.9.
b. Place scales under each wheel (minimum scale capacity, 500
pounds nose, 1000 pounds each main).
c. Deflate the nose tire and/or shim underneath scales as
required to properly center the bubble in the level.
3. Weighing (Figure 6-3):
a. With the airplane level, doors closed, and brakes released,
record the weight shown on each scale. Deduct the tare, if
any, from each reading.
Revision A3