ADB Safegate AXON, User Manual

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CAUTION
Use of incorrect combination of gaskets, bolts and nuts can create severe damages to the product installation and
create multiple safety risks.
Make sure to know what base the light fixture will be installed in, in order to chose the correct gasket, bolts and nuts.
Failure to follow these cautions can result in equipment damage or aircraft FOD. For more information, see
INTEROPERABILITY .
4.4 Toe-in
Toe-in of light fixtures can be achieved in two ways:
1. By installing the light fixture in runway/taxiway parallel bases and use light fixtures with built in toe-in.
2. By installing the light fixture in bases installed at an angle relative the runway/taxiway and use light fixtures with no built
in toe-in.
If bases which are installed at an angle are used, provided that they are installed correctly, straight light fixtures (i.e. with no
toe-in) should be used.
The following chapter only regards the case where light fixtures are installed in runway/taxiway parallel bases, i.e. where no
toe-in is achieved by angled bases.
There are three major categories regarding the toe-in in light fixtures:
Straight light fixtures These light fixtures have a straight light beam
Light fixtures with optical toe-in These light fixtures have a reflector that reflects the light beam at an appropriate angle
Figure 1: Toe-in
Straight Optical Toe-in
Prism
direction
Light
beam
direction
The table below shows a summary of the light fixture types and their toe-in properties.
Light Fixture Toe-in options Toe-in type
L-850A(L) - Runway Centreline (RC) Straight N/A
L-850B(L) - Runway Touchdown Zone (RZ) Straight or 4° toed-in Optical
L850C - Runway edge (RE)R Both sides toed-in 3.5° Optical
L-850D(L) - Runway threshold/end (RT)L-852C(L) - Taxiway Centreline Narrow
(TC-I)
Green straight or 3.5° toed-in. Red is straight Optical
L-850D(L) - Runway end (RN) Straight N/A
UM-5055, Rev. 1.0.9, 2022/04/29 17
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