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Chapter 3 OPERATING/CREW MAINTENANCE INSTRUCTIONS
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TM-9-1270-219-13-P Fire and Flight Air Data Subsystem Helicopter Armament: XM 143 PN 03-004-02 Manual
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Figure 4-1. Sensor Installation and Helicopter Plumbing
TM
9-1270-219-13&P
AVIATION
UNIT
MAINTENANCE
INSTRUCTIONS
Section
1.
SERVICE
UPON
RECEIPT
OF
MATERIEL
4-1. Inspecting Instructions.
c. Visually Inspecting the EPU.
a. Visually Inspecting the AADS.
(1) Inspect the EPU for dust, dirt, lint, grease, oil
or other foreign matter, scratched or damaged surfaces,
(1) Inspect the AADS for dust, dirt, lint, grease,
loose or missing screws and illegible or obliterated markings.
oil or other foreign matter, scratched or damaged surfaces
w h i c h would impair the operation of the AADS. Inspect for
l o o s e or missing screws, illegible or obliterated markings,
(2)
Inspect
the
electrical
connector
J1
for
and broken or missing safety wire.
broken, loose, bent, corroded or missing pins.
(2)
Inspect
the
electrical
connector
J1
for
(3) Check that the pitot and static connectors PS
broken, loose, bent, corroded or missing pins.
and
PT o n
the
front
panel
are
unobstructed
and
have
undamaged threads.
(3) Check that the pitot hole, the two static
holes and the two drain holes in the head are unobstructed.
d. Visually Inspecting the LAI.
that
the
pitot
and
static
union
(4)
Check
body
are
unobstructed
and
have
connectors
on
the
(1) Inspect the LAI for dust, dirt, lint, grease, oil
undamaged threads.
or other foreign matter, scratched or damaged surfaces, and
loose or damaged screws.
(5) Check that the swivelling probe rotates freely
through 360 in pitch and approximately 120 in yaw
(2) Inspect the electrical connector for broken,
loose, bent, corroded or missing pins.
b. Visually Inspecting the Sensor Installation
(3) Inspect the front of the LAI for damaged glass
and illegible or obliterated dial markings.
(1)
Inspect
the
sensor
installation
support
assemblies (9, fig. 4-1) for loose or missing bolts, screws and
threaded inserts. Inspect for loose rivets securing support
4-2. Installing the AADS.
assembly to tube assembly (8).
a. Secure the helicopter pitot and static union
(2) Inspect the tube assembly (8) and mounting
connectors (12 and 13, fig. 4-1) to the AADS. If necessary
bracket (7) for cracks. Inspect mounting bracket for loose
loosen
helicopter
plumbing
securing
clips
to
allow
rivets.
movement of the pitot and static plumbing. Tighten
securing
clips
after
the
helicopter
pitot
and
static
(3)
Inspect
canopy
channel
support
(5)
for
connectors have been secured to the AADS.
cracks and loose or missing screws.
b.
Connect
the
helicopter
electrical
connector
(4) From inside the pilots compartment, inspect
18A2J1 (14) to the AADS.
pitot
and
static
lines
for
chafing,
breaks
and
loose
connectors.
c . Apply a thin film of sealant (item 1, Appendix
F) to the sensor installation support assembly (9) mat
(5)
Inspect
clamps
for
proper
installation
to
ensure pitot and static lines are not crimped.
surface.

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