Page 4-10
28 Feb 2018
23-15-45
SYSTEM DESCRIPTION, INSTALLATION, AND MAINTENANCE MANUAL
Aspire-200
© Honeywell International Inc. Do not copy without express permission of Honeywell.
Center the O-ring seals on the J1 and J2 connector holes (approximately). Ensure
that there is no overlap between the O-rings and the fuselage penetration holes.
NOTE: Do not re-use gasket or O-rings.
Additionally, the perimeter of the AMT-1800 IGA should be sealed to the mounting
surface (aircraft fuselage or Antenna Interface Mount, if applicable) to avoid water
entrapment and corrosion. The installer must follow proper avionics procedures,
use approved avionics sealants and corrosion inhibitors. When sealing the
antenna perimeter to the fuselage, avoid quantity 2 vent holes at aft.
NOTE: Contact Honeywell to order replacement sealing kits.
(2) Antenna to Aircraft Attach Fastener Locations
After installation and function ground test of the AMT-1800 IGA to the aircraft, the
antenna to aircraft mounting locations (4 places) must be sealed using the custom
sealing plugs provided with the system.
Each sealing plug consists of a foam plug and a cap; these may be delivered
pre-assembled. The sealing plugs have a keying feature to ensure proper
alignment in AMT-1800 IGA.
Apply approved avionics sealants (such as silicone RTV) to the faying surface of
the AMT-1800 IGA and the sealing plug surface prior to installation of the sealing
plug into the respective mounting location. Wipe away excess sealant.
NOTE: Contact Honeywell to order replacement sealing kits.
(3) Selecting a Location for the AMT-1800 IGA
For clear satellite communication, install the AMT-1800 IGA on the top of the
fuselage.
Select a location for the AMT-1800 IGA assembly that minimizes shadowing
from any part of the aircraft structure. The aircraft tail (on fixed wing platforms)
may cause a small amount of blockage. You can minimize this blockage by
installing the AMT-1800 IGA forward on the fuselage so that it has a clear view
in any direction from 5° to 90° in elevation and 360° in azimuth.
(4) Aligning the AMT-1800 IGA
Orientation of the AMT-1800 IGA is defined with respect to the principal axes
of the antenna. The principal axes are illustrated in Figure 3-7 on page 3-13.
The connector access cover on the radome is towards the aft of the aircraft. In
this orientation, the principal axes of the AMT-1800 IGA should be aligned with
those of the aircraft to within ± 0.25°. This is the default position for the
AMT-1800 IGA.
You can install the AMT-1800 IGA in a position that is slightly offset from the
default position.
The HDU can be configured to compensate for installation
offsets, the procedure for configuring the HDU is provided in the System
Setup Section 1F. This is the preferred method for applying any antenna
installation offsets. Optionally,
s
oftware in the AMT-1800 can accommodate an
