Figure 3-7.—CATCC DAIR system interlace block diagram.
also incorporates primary radar track processing as a
backup.
The AN/TPX-42A(V) 12 does not replace any
existing system. On amphibious-type ships, 4 indicator
control groups (consoles) are located in the Helicopter
Direction Center (HDC). Additional consoles are
located in the Tactical Air Control Center (TACC) on
LHA- and LHD-type ships. To accommodate the
installation, some existing consoles may be removed
from these locations, but no system is replaced. Field
change kits will update currently installed CATCC
DAIR systems on CV- and CVN-type ships to the (V)12
configuration.
The AATC DAIR interfaces with the same systems
as CATCC DAIR, with the following additional
interface capabilities:
Integrated Tactical
System (ITAWDS)
Amphibious Warfare Data
Shipboard Data Multiplex System (SDMS)
MAINTENANCE
The organizational maintenance for the DAIR
systems is done by ETs (NEC ET-1574 for DAIR,
ET-1576 for CATCC DAIR, ET-1576 with 2 weeks of
difference training for AATC DAIR, and ET-1578 for
RATCF DAIR). You will perform both on-line and
off-line tests and alignment, system operational checks
and adjustments for CATCC and AATC DAIR, and
periodic inspection, verification and cleaning of certain
equipments in RATCF DAIR. By using BITE for
on-line fault isolation, you will be able to isolate faults
3-9
