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STEP 2: COMPUTING HEADING AND GROUNDSPEED
The next step is to use preflight winds to compute a True Heading from the True
Course and the predicted ground speed for each leg. Using the procedures from
chapter five, predicted heading and ground speed for the first leg are
042T/127kts and for the second leg are 334T/105kts.
The resulting heading and Ground Speed values can then be entered in the
"notes" block to the far right of the jet log for reference during the flight (Figure
4.7-12).
Figure 4.7-12 Step 2 Flight Planning
STEP 3: COMPUTING ESTIMATED TIME ENROUTE (ETE)
Once a Ground Speed is determined, an estimated time enroute (ETE) can be
calculated for each leg. This is the third step in preflight planning. The distance
from Tyndall to Blountstown is 36NM and will be flown at a predicted Ground
Speed of 127kts. Using the procedures from chapter 3, an ETE of 17 minutes is
calculated which can then be entered in the ETE block shown in Figure 4.7-13.
Figure 4.7-13 Step 3 Flight Planning
4.A-152


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