Airplane Weighing Procedures - Cessna 150 COMMUTER 1976 Pilot Operating Handbook

CESSNA
MODEL 150M
SECTION 6
WEIGHT & BALANCE!
EQUIPMENT LIST
I N T' R O D UCTION
This section describes the procedure for establishing the basic empty
weight and moment of the airplane. Sample fo r ms are provi.ded for refer-
ence. Procedures for calculating the weight and moment for var ious oper-
ations are also provided. A comprehensive list of all Cessna equ ipment
available for this airplane is included at the back of this section.
It should be noted that specifiC information regarding the weight, arm ,
moment and installed equipment list for this airplane can only be found in
the appropriate weight and balance records carried in the airplane.
AIRPLANE WEIGHIN G PROCEDU RE S
(1) Preparation:
a. Inflate tires to recommended operating pressures.
b. Remove the fuel tank sump quick-drain fittings and fuel line
drain plug to drain all fuel.
c. Remove oil sump drain plug to drain all oil.
d. Move sliding seats to the most forward position.
e. Raise flaps to the fully retracted position.
(2) Leveling:
a. Place scales under each wheel (500# minimum capacity for
scales).
b. Deflate nose tire and!or lower or raise the nose strut to
center bubble on level (see Figure 6-1).
(3) Weighing:
a. With the airplane level and brakes released, record the
weight shown on each scale. Deduct the tare, if any, from each
reading.
(4) Measuring:
a. Obtain measurement A by measuring horizontally (along the
airplane center line) from a line stretched between the main
wheel centers to a plumb bob dropped from the firewall.
b. Obtain measurement B by measuring horizontally and par-
allel to the airplane center line, from center of nose wheel axle,
left side, to a plumb bob dropped from the line between the main
wheel centers. Repeat on right side and average the measure-
ments.
(5) Using weights from (3) and measurements from (4) the airplane
.weight and C. G. can be determined.
6-3