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|  MIL-D-89009
APPENDIX
30.2 Data dictionary organization. The coverages in each
library are presented in alphabetical order. A brief description
is provided for each coverage. The coverage description is
followed by value description tables. The value description
tables specify the attribute codes for features in that coverage,
organized by feature class, and provide the description for each
value. Area, line, point, and text feature tables (*.AFT, *.LFT,
*.PFT and *.TFT), when present, appear in that order. The feature
tables provide the field definition and the field size required to
store the attribute data.
30.3.
DCW library coverages.
30.3.1 Aeronautical coverage.
a. Coverage contents. This coverage contains only airport
information stored in a point feature table. All
airport data were derived from the DMA Digital
Aeronautical Flight Information File (DAFIF) or from ONC
coverage. Airport data for Antarctica were derived from
the JNC charts. Airport point features are described by
six attributes: AEPTTYPE, AEPTNAME, AEPTVAL, AEPTDATE,
AEPTICAO, and AEPTDKEY. Attribute values are as
described in the integer value description table
(TABLE 61).
b.
AEPOINT.PFT attribute definitions. TABLE 62 describes
the attribute names and descriptions that comprise the
aeronautical point feature table (AEPOINT.PFT).
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