Section 3. Displays
8-3-1. DIGITAL MAP VERIFICATION
Verification of the accuracy of new or modified digital maps
must be accomplished through the use of “targets of
opportunity” over displayed fixes, navigational aids, etc. Any
observed discrepancies must be documented to indicate the
observed direction and displacement. If any errors cannot be
corrected or if a facility is otherwise dissatisfied with the
results from “targets of opportunity,” a request may be made
through the FIFO for a flight check. If no discrepancies are
noted, no documentation is required.
8-3-2. DATA DISPLAY FOR BLOCK ALTITUDE FLIGHTS
Facilities operating in the narrowband mode must ensure that,
as a minimum, radar target symbols, aircraft identifications (ACIDs),
and altitude information are displayed at all sectors affected
by altitude assignments involving more than one altitude
(Block Altitude) when radar separation is being provided.
8-3-3. SELECTED ALTITUDE LIMITS
The
display of Mode C targets and limited data blocks is necessary
for application of Merging Target Procedures. Sectors must
ensure the display of Mode C targets and data blocks by
entering appropriate altitude limits and display filters to
include, as a minimum, the altitude stratum of the sector
plus:
a. 1,200
feet above the highest and below the lowest altitude or flight
level of the sector where 1,000 feet vertical separation is
applicable; and
b. 2,200
feet above the highest and below the lowest flight level of
the sector where 2,000 feet vertical separation is applicable.
NOTE-
1. The data block, for purposes of this
paragraph, must contain the beacon code and mode C altitude at
a minimum.
2. Exception
to these requirements may be authorized for specific altitudes
in certain ARTCC sectors if defined in appropriate facility
directives and approved by the respective service area
operations directorate.
8-3-4. AUTOMATED WEATHER DISPLAY STATUS
Facilities operating in the narrowband mode must ensure that
sector controllers are immediately briefed on any change in
the status of the Weather Fixed Map Unit (WFMU) or radar
polarization. |