Removing the Sensor Installation.

9-1270-219-13&P

d. Position the AADS on the sensor installation

guide through tube assembly (8) and out through support

support assembly (9) so that the alignment pin on the

assemblies (9).

AADS engages the hole on the support assembly.

c. Insert pitot and static lines through mounting

e. Secure the AADS with three bolts (16) and

bracket

and

guide

through

tube

assembly

(8)

and

out

washers (15). Torque bolts to 35 + 5 in-lb.

through

support

assemblies

(9).

f . Safety wire (item 2, Appendix F) the three bolts.

d. Position mounting bracket (7) in place on canopy

side rail and secure with screws (6).

g . Secure grounding strap (1 O) to the AADS and

the

sensor

installation

support

assembly

with

attaching

screws (11).

e . Connect pitot and static lines to the EPU and

fittings, as necessary. Route and secure lines with clamps, as

required.

l e a k tests as specified in paragraph

Perform

4-13.

f. Install canopy channel support (5) with three

screws (3) and washers (4).

4-3. Removing the AADS

Remove

sensor

installation

grounding

strap

g. Conduct PMCS (B) Chapter 4, Section II and

(10, fig. 4-1 ) and attaching screws (11) from the AADS.

p e r f o r m troubleshooting functional test, Chapter 4, Section

Ill. For alignment and boresighting procedures, refer to

b. Break and remove the safety wire securing the

AVIM

maintenance.

three mounting bolts.

4-5. Removing the Sensor Installation.

c. Remove the three bolts (16) and washers ( 15)

securing the AADS to the sensor installation support

assembly

(9).

a. Remove canopy channel support (5, fig. 4-1) b

removing three screws (3) and washers (4) to gain access t

d . Remove the AADS from the sensor installation

pitot and static lines.

s u p p o r t assembly.

b. Guide the pitot and static lines through the

e . Disconnect t h e e l e c t r i c a l c o n n e c t o r 1 8 A 2 J 1 ( 1 4 )

sensor installation and canopy channel. Disconnect pitot

from the AADS.

a n d static lines from union tees (1 and 2) and remove

clamps, as necessary.

f. Disconnect the pitot and static union connectors

(12 and 13) from the AADS. If necessary, loosen helicopter

c. Guide the electrical cable and connector through

plumbing securing clips to allow movement of the pitot and

the sensor installation and canopy channel.

static plumbing (fig. 4-1). Tighten securing clips after the

pitot

and

static

connectors

have

been

disconnected

from

the AADS.

g. Remove all traces of sealant from mating surfaces

o f the helicopter boom mounting support assembly and the

AADS.

Screws securing bracket to canopy side

rail must be installed in same order of

44. Installing the Sensor Installation.

removal due to length differences.

a. Route electrical connector 18A2J1 and cable, and

union

assembly

ends

pitot

and

static

lines

through

d. Remove screws (6) securing mounting bracket (7)

canopy channel (fig. 4-1).

to the canopy side rail.

b. Position tube assembly bracket near canopy side

rail. Insert electrical connector in mounting bracket (7) and

e. Remove sensor installation.

4-3