Figure 3-6.—Typical shipboard Mark XII transponder section.
program, the Navy, Air Force, and FAA further agreed
on specifications for a ground/shore-based
configuration called the DAIR system.
DIRECT ALTITUDE AND IDENTITY
READOUT (DAIR) SYSTEM
The DAIR air traffic control system provides
several different types of configurations for different
user requirements. They are as follows:
Type 5, DAIR
Type 10, Radar Air Traffic Control Facility
(RATCF) DAIR
Type 8, Carrier Air Traffic Control Center
(CATCC) DAIR
Type 12, Amphibious Air Traffic Control
(AATC) DAIR
Type 13, Shipboard DAIR.
The Navy Training Plan (NTP) for the Type 13
system is currently being reviewed for approval. This
shipboard DAIR system is scheduled to replace all Type
8 and Type 12 systems in the fleet; however, there is
currently no confirmed time for the conversions. We
will include the specifics of this system in the first
revision of this volume after the NTP is approved and
an installation schedule is set. In the meantime, if you
would like to find out more about the Type 13 system,
contact the instructors who teach the DAIR systems at
the Naval Air Technical Training Center, NAS
Memphis, Millington, TN.
All the types of DAIR systems use an operator (or
a team of operators) to control air traffic via display
devices.
Each operator gathers and assembles
information by monitoring and operating display
devices. The operators use this information to control
air traffic within a given area.
DAIR (AN/TPX-42A(V)5)
AN/TPX-42A(V)5 gives the air traffic controller
rapid, positive identification and altitude data on
transponder-equipped aircraft. It is used for
ground-controlled approach at shore installations, such
as Naval and Marine Corps air stations (NAS, MCAS),
radar operational facilities (ROF), and radar air traftlc
control facilities (RATCF). At expeditory airfields, the
AN/TPX-42(V)5, in a transportable shelter with ASR,
is used by Marine Air Traffic Control Squadrons
(MATCS). This system operates with a primary radar.
The radar supplies synchronizing triggers and azimuth
data to the system.
The DAIR information is
superimposed on the primary radar video.
3-7
