Tc978 Controller; Cooling Requirements - FreeFlight ADS-B FDL-978 Series Installation Manual

ADS-B FDL-978 Series and
Lite Series Installation Manual
Document No. 87343 Rev G

2.2.2 TC978 Controller

The TC978 Controller must be mounted rigidly in the aircraft panel. The Controller can be
mounted in the ultra-compact mounting or conventional 2.25 in [57mm] instrument cut-out
shown in Section 8.2.
Select a position in the panel that is not too close to any high external heat source.
(The TC978 is not a significant heat source itself).
Avoid sharp bends and placing the cables too near to the aircraft control cables.
If using a 2.25 in instrument cut-out, first clip the two mounting adapters to the Controller. The
Controller should then be mounted using the four LONG screws provided.
If using the FFS compact cutout, you do not need the mounting adapters. The Controller should
be mounted using the four SHORT screws provided. If alternate screws are required, please
note that the mounting thread in each case is 4-40.
2.3

Cooling Requirements

Failure to provide adequate cooling may lead to increased avionics maintenance
costs and may void the FFS Warranty.
The FDL-978 Series and TC978 meet all Technical Standard Order (TSO) requirements without
forced air cooling. While each individual unit does not require forced air cooling, the combined
heat load of several units operating in a typical avionics location may significantly degrade the
reliability of avionics if provisions for cooling are not incorporated in the initial installation.
2-4
Figure 7. TC978 Dimensions
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