Instrument Flight
Flight Procedures
WAYPOINT OFFSET POINT-TO-POINT NAVIGATION
The following steps are used to set up steering to a waypoint offset. First, select a waypoint that
represents the location of the appropriate navigation aid that defines the fix. If the waypoint is one of the
active waypoints, select that waypoint number with the increment/decrement arrows on the HSI display.
Second, from the HSI, ADI, or MENU display, select DATA. On initial selection of DATA, the system
defaults to the waypoint selection; on subsequent selections of DATA, the display returns to the last
selected sublevel format, WYPT, ACFT, or GPS. If required, select WYPT (Figure 26).
Waypoint Data Entry
Selection Options
Selected DATA Waypoint
Waypoint's ICAO Identifier
Waypoint Offset Data
Selected DATA Waypoint
Entry Selection Options
Data Block
Selected DATA Waypoint
Offset Data Block
Aircraft Data Page
Access Option
Figure 26: WAYPOINT DATA DISPLAY
Third, enter the bearing and range of the fix for the waypoint that defines the navigation aid. The offset
entry options are located on the left bezel of the MFD (Figure 26): range (RNG O/S), magnetic bearing
(BRG O/S), and elevation (ELEV O/S). Offset data entry, using the DEP and scratchpad, is enabled when
one of the O/S options is selected. No offset data is displayed if range is set at 0.0 nm. Range is limited
to 0.0-99.9 nm in tenth of a mile increments. Bearing is 000-359.9 degrees in tenths of a degree
increments (360 may be entered for 000). The decimal is not displayed on the scratch pad, but is
automatically entered before the last digit after the data is entered into the system. The decimal is
displayed in the offset data block. Elevation initializes to the associated waypoint elevation and is limited
from -999 to 9,999 ft in one-ft increments. Don’t change elevation, it is not used for waypoint offset
steering. Changing the position of the waypoint after entering offset data automatically sets offset data for
that waypoint to zero and all offset data is blanked. Fourth, select HSI and select WO/S. The waypoint
bearing pointer and waypoint data block provide steering information to the fix.
If there is no active waypoint for the navigation aid, this waypoint data must be transferred from the
Mission Data Loader (MDL) if the navigation aid is one of the 200 waypoints in the MDL or the latitude,
longitude, and magnetic variation of the navigation aid can be manually entered.
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