MAULE AEROSPACE TECHNOLOGY, INC.
AIRPLANE FLIGHT MANUAL
MAULE
MX-7-180AC
SECTION V
WEIGHT AND
BALANCE
5.1
WEIGHT AND BALANCE: (Cont'd)
The above empty weight includes unusable fuel of 27.6 lbs. at 24 inches and 8 quarts of oil
at minus 36.5 inches, plus all items of equipment as marked on the accompanying Equip-
ment Lists. The Certificated empty weight is the above weight less 16 lbs. drainable
oil at a minus arm of 36.5 inches and for this airplane is ______________lbs. The corre-
sponding empty weight center of gravity is ______________inches.
5. Calculations for determining weight, C.G. and moment:
a.
Center of Gravity (inches) = L x T - D
W
i.e., C.G. = _____________ - ____________ = ___________inches.
b.
Moment (inch pounds) = W x C.G.
i.e., Moment = _____________ x ____________ = ___________inch lbs.
EXAMPLE OF WEIGHT AND BALANCE CALCULATION FOR LOADED AIRCRAFT:
An airplane with an empty weight of 1383 lbs. and empty weight C.G. location of 12.0
inches is loaded with a pilot and front seat passenger, fuel and baggage.
Item
Weight, lbs. C.G. Location Moment, In.lbs.
Empty Weight (including engine oil)
1383
12.0
16,596
Pilot and Front Passenger
340
*
6,800
Fuel - 40 gal. in Mains
240
*
5,760
Baggage (Area "C")
50
*
3,500
2013
16.2
32,656
*Moments can be read directly from the loading graph.
By locating the point corresponding to 2013 lb. aircraft weight and a C.G. location of
16.2 inches on the Center of Gravity Envelope graph, you can see that this point falls within
the envelope, signifying the loading is acceptable.
FORM 79
PAGE 19
