AIRPLANE
OPERATIONS
MANUAL
FLIGHT PLANNING
EMB-145 A1 and A1P LB
REVISION 40
1-05-05
Page
1
Code
02
AOM-145/1114
SIMPLIFIED FLIGHT PLANNING
Simplified flight planning charts allow quick determination of estimated
trip fuel and time from brake release to landing. The following phases
are included: takeoff, climb, cruise, descent, approach and landing.
Charts are provided for Long Range Cruise (LRC) and Maximum
Speed Cruise (MSC) at constant altitude.
Alternate fuel, holding, reserve fuel and other allowances (APU usage
and taxi) should be added to the trip fuel in order to obtain the total
fuel required.
To determine trip fuel enter trip ground distance, correct for wind
condition and estimated landing weight, move as far as the line
indicating cruise pressure altitude, and read the trip fuel.
To determine trip time, enter trip ground distance, correct for wind
condition, move as far as the referring cruise pressure altitude, and
read the trip time.
For winds greater than those shown, enter in the chart, directly,
corrected ground distance, ignore wind correction reference line, to
obtain the corrected ground distance, apply the following equation.
CGD GD
TAS
TAS WIND
=×
+
⎛
⎝
⎜
⎞
⎠
⎟
Where:
CGD: Corrected ground distance;
GD: Ground distance;
Head wind is negative;
Tail wind is positive.
The alternate fuel is determined by entering the LRC Simplified Flight
Planning chart with the alternate distance and wind.
The holding fuel is determined from the holding table in this section.
Depending upon national regulations, the holding fuel is normally
calculated so that the aircraft can hold for 30 min., at 1500 ft above the
alternate airport.
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