Y1-03-0146 Rev. D
3
1. General
This publication provides maintenance and operating instructions for the MS-2000(M)
Distress Marker Light.
2. Purpose
The light is designed and intended to provide aircrew and other personnel with a high-
intensity visual distress marker signal for use in the event of unscheduled abandonment
of aircraft in isolated regions and other emergency and/or special operational mission
situations.
3. General
Characteristics
a.
The MS-2000(M) Distress Marker Light is a lightweight, compact, battery
operated, portable unit that is designed to be used as a multi-functional light
during emergency and/or clandestine special mission situations. The light is
designed to attract attention; to assist in location; and to facilitate personnel
rescue operations in both overt and covert operations.
b.
The light system consists of a main body case containing the electronics, lamp,
batteries and the flashguard (FG) shield containing one Infra Red (IR) and one
blue filter. The flashguard also has raised battery polarity indicators to assist in
non-visual battery replacement. The case is fabricated of high impact, cut
resistant thermoplastic material and designed to insure watertight integrity of the
main body case. The light utilizes a xenon strobe lamp, is powered by two AA
batteries and is actuated by a magnetic reed switch. The light is designed for one-
handed operation and may be operated by either hand or attached to any object.
c.
The flashguard shield contains both an IR and Blue filter which are used as
safeguards in hostile territories so as to prevent possible signaling confusion (i.e.,
small arms ground fire) between the signaler and observer. The IR filter provides
omni-directional transmission of IR wavelengths. The Blue filter is used for line-
of-sight (directional) light transmissions. The IR filter is designed for use during
clandestine operations.
d.
Electrical power for the MS-2000(M) is provided by two 1.5V, AA, alkaline
batteries located in the base of the main body case. A retained battery door is
provided with an "O" ring seal to insure its watertight integrity. Additionally,
electrical power is controlled by a magnetic reed switch located on the side of the
main body case. This switch also insures waterproof integrity of the main body
case.
4. Operating
Instructions
a.
Turn "ON". Slide switch up until it stops. The strobe should begin flashing
within a few seconds.
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