AA95-1000TSO Single Channel Audio Controller
Installation and Operation Manual
Rev 1.01 CONFIDENTIAL AND PROPRIETARY TO COBHAM Page 2-2
2.3.3 Cabling and Wiring
All wire shall be selected in accordance with the original aircraft manufacturer's Maintenance Instructions
or AC43.13-1B Change 1, Paragraphs 11-76 through 11-78. Unshielded wire types shall qualify to
MIL-W-22759 as specified in AC43.13-1B Change 1, Paragraphs 11-85, 11-86, and listed in Table 11-11.
For shielded wire applications, use Tefzel MIL-C-27500 shielded wire with solder sleeves (for shield
terminations) to make the most compact and easily terminated interconnect. Follow the interconnect
drawing in Section 2.7 as required.
Allow 3" from the end of the shielded wiring to the shield termination to allow the connector hood to be
easily installed. Refer to the interconnect drawing in Section 2.7 for shield termination details. Note that
the hood is a "clamshell" hood, and is installed after the wiring is complete. Aircraft harnessing shall
permit the unit to be removed from the panel for easy access to all side adjustments. Do NOT mount the
unit until all adjustments have been performed.
Maintain wire segregation and route wiring in accordance with the original aircraft manufacturers
Maintenance Instructions.
Unless otherwise noted, all wiring shall be a minimum of 22 AWG, except power and ground lines, which
shall be a minimum of 20 AWG. Reference the Interconnect drawing for additional specifications. Check
that the ground connection is clean and well secured, and that it shares no path with any electrically noisy
aircraft accessories such as blowers, turn and bank instruments or similar loads. Power to this unit must
be supplied from a separate circuit breaker or fuse (fast blow), and not attached to any other circuit
breaker without additional protection. Verify that the selected circuit breaker size and wire gauge are
adequate for the installation using the techniques specified in AC43.13-1B Change 1, Paragraphs 11-47
through 11-51 and 11-66 through 11-69.
2.3.4 Legend Installation
Custom removable legends are to be ordered and installed by the customer.
Each AA95-1000TSO requires a set of legends, either purchased individually (Part no. 55-08-xxxx, where
xxxx is the description of the legend, e.g., “COM1”) or as a legend kit (Part no. AA95LK-xxx). Each kit
consists of a number of printed legends and blanks (to suit customer requirements), and each legend
comes complete with a black gasket, either attached or loose in the bag.
If it is necessary to remove or replace a legend, carefully lever the legend away from the faceplate, and
insert the new or replacement legend as described above.
CAUTION
If the faceplate is damaged in any way during this process, light leakage
may occur, which will necessitate returning the unit to the manufacturer
for repair or replacement.
When installing the legends for the first time, each legend must be fitted
with a black gasket to ensure uniformity of legend lighting. The gasket
fits into place on the back of the legend, but is easily dislodged or
damaged. Take particular care to ensure that it is properly positioned
before snapping the legend fully into place. If a replacement gasket is
required, the whole legend must be ordered.
