Figure 6-8

STUDENT GUIDE

VISUAL NAVIGATION

6.5.6.2. In T-34 VNAV chart

preparation, the altitude for each

leg is placed in the appropriate

information box or "dog house."

For T-1A/T-39 charts, the

altitude listed in the information

box shall be a `safe' MSL

altitude for that leg. Compute

this altitude by adding 500 feet

to the highest Maximum

Elevation Figure (MEF)

affecting that leg. Examine the

plotted track for a given leg,

determine which latitude -

longitude blocks the leg crosses,

and choose the highest MEF of

those "blocks" the route crosses.

6.5.6.3. In Figure 6-8, there are

three MEF values to consider:

1100 feet, 900 feet,and 900 feet

(note high lighted areas). The

highest of these is 1100 feet, so

another 500 feet is added to

yield 1600 feet. Record this

altitude in the information block

for this leg, as well as the data

work sheet.

Figure 6-8

NOTE: This is just an emergency altitude--- when this route is flown, the aircraft will descend

to 500 feet AGL or the lowest AP-1B altitude, which ever is higher.

6-11