waypoint. If the waypoint is used in a flight plan, the
flight plan number is shown to the right of the waypoint
type. Refer to Figure 3D-74. If more than five user
waypoints exist, it is necessary to press the left CRSR
button and then use the left outer knob to scroll
through the complete list.
FARM A 6
L29 A 24
Figure 3D-74. OTH 3 Page
(1) Deleting a User Waypoint.
1. Select the OTH 3 page.
2. Press the left CRSR button and use
the left outer knob to move the cursor
over the waypoint to be deleted. If
more than five user-defined waypoints
exist, it is necessary to use the left
outer knob to scroll through the list. A
waypoint contained in a flight plan
cannot be detected without first either
deleting the waypoint from the flight
plan or deleting the entire flight plan.
3. Press the CLR button. The waypoint
page for the waypoint to be deleted
appears on the right side.
4. Press the ENT button.
5. Press the left CRSR button to turn off
the left cursor function.
d. Deleting Airport Remarks (Other 4). The
OTH 4 page includes a listing of all airports whose
APT 5 pages contain remarks. To delete a previously
entered remark, select the OTH 4 page, position the
cursor over the desired airport identifier, press the
CLR button, and then press the ENT button. If there
are more than five airports with remarks, use the left
outer knob to scroll the cursor down the list to find the
desired airport identifier.
e. Fuel Management (Other 5 through 8). The
installation of the Army Engine Trend Monitoring
System (AETM) allows the KLN 90B to interface with
real time fuel management data so that the system
can continuously compute the amount of fuel required
to reach the destination and the amount of fuel that will
be on board upon reaching the destination. The
AETM continuously sends the rate of fuel flow to the
KLN 90B. The KLN 90B continuously calculates the
aircrafts distance, groundspeed, and estimated time
en route to the destination waypoint. The fuel required
to reach the destination waypoint is the ETE multiplied
by the current rate of fuel flow. The amount of fuel
remaining at the destination is the amount of fuel
presently remaining minus the fuel required to reach
The KLN 90B fuel calculations are based
on the present rate of fuel flow, the present
groundspeed, the present distance to the
destination airport along the programmed
route, and the amount of fuel onboard
entered at departure. Before takeoff, the
unit must be properly initialized with the
amount of fuel on board. Since many
factors influence the required amount of
fuel to reach the destination, check the fuel
pages often for significant changes. Some
changes, and routing changes.
(1) OTH 5 Page. The OTH 5 page displays
the following information. Refer to Figure 3D-75.
L FOB 1060
Figure 3D-75. OTH 5 Page