WEIGHT AND
BALANCE
AIRPLANE
OPERATIONS
MANUAL
1-06-40
Page
2
Code
03
REVISION 29
NOTE: For Ferry and Training flights, in which passenger or flight
attendant movement is not an issue, a constrained center of
gravity envelope without the seat and flight allowances may be
used so as not to limit these types of flight unnecessarily. For
flights with more than 33 or 45 passengers (with the
unoccupied seats at the forward portion of the cabin), for
EMB-135 and EMB-145, respectively, a constrained center of
gravity envelope without the seat allowances may be used so
as not to limit these types of flight unnecessarily.
FLAP MOVEMENT ALLOWANCES
Flap movement has negligible effects on the airplane Center of
Gravity.
FUEL DENSITY ALLOWANCES
The variation of fuel density has negligible effects on the airplane
Center of Gravity.
LANDING GEAR ALLOWANCES
When the landing gear is retracted, there is a reduction of
-10155.15 lb.in of the moment in respect to the airplane datum.
FORWARD FLIGHT ALLOWANCES
Considers the movement of the forward flight attendant to the cockpit.
Example:
EMB-135LR
Forward Allowance Weight
(lb)
from Arm
(in)
to Arm
(in)
Moment
(lb.in)
Fwd attendant to cockpit 170 188.98 165.35 -4017
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