ADB L-804 - 2 L-804; Ergl; About this Manual; Introduction; How to Work with the Manual

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2.0 L-804 / ERGL The ERGL incandescent Runway Guard Light is an elevated unidirectional flashing yellow
light fixture that provides a distinctive warning to pilots that they are approaching a runway
holding position and are about to enter an active runway. The ERGL is typically installed in
pairs, one on either side of the taxiway holding position. It can also be used in combination
with IRGL (In-pavement Runway Guard Light), ISTB (In-pavement Stop Bar Light), and ESTB
(Elevated Stop Bar Light) to provide additional safety under low-visibility conditions on the
airfield.
2.1 About this manual
2.1.1 Introduction This technical manual presents installation and maintenance information required for the
incandescent ERGL elevated runway guard light.
The manual shows the information necessary to:
• Install and maintain the ERGL.
2.1.2 How to work with
the manual
1. Become familiar with the structure and content.
2. Carry out the actions completely and in the given sequence.
2.1.3 Record of changes
Pg Rev Description Review App Date
8 T Added lamp & PCB VA loads WT WT 3/15/05
31, Figure
10
U Added lens gasket part number ER ER 12/21/07
Pg 8-9,
31, 33
V Added ICAO features, specs and parts GM ER 9/05/09
all W Updated entire manual RW JC 4/27/15
12-13 X updated torque info / drawings RW JC 7/14/16