FSG 90F System
3. Installation
Page
20
November 2000
W. Dittel GmbH
3.4
Mechanical Installation
3.4.1
Transceiver installation
Any radio installation into an aircraft shall be coordinated with both, the licensed
inspector who certifies the installation, and with the aircraft manufacturer's installation
instructions.
Certifying the aircraft installation may be subject to specific National Regulations.
FSG 90F(X)
VHF/AM transceivers are designed to be installed into the instrument panel
or operating console from its front side. Fixing is made by four DZUS fasteners (ARINC
NORM SIZE). All dimensions to install the
FSG 90F(X)
refer to Figure 3-3. For installation
of the fastener strips refer to Figure 3-4.
If there is no suitable cutout, one can be made following the dimensions given in Figure
3-4. Using flat fastener strips (type PR 35-1) is recommended.
Select a radio location distant to heat sources. All equipment controls shall be readily
accessible from the pilot's normal seated position. The appropriate operator/crew
member(s) shall have an unobstructed view of the display when in the normal seated
position.
Sufficient room (at least 230 mm / 9 in.) behind front panel must be left for wiring
accommodation.
3.4.2 Compass deviation
Compass deviation caused by
FSG 90F(X)
is less than 30 cm for 1° deflection.
(Category Z in accordance with EUROCAE ED-14C / RTCA DO-160C environmental
test conditions).
Compass Deviation
Distance
0.5°
13 cm/5.1 in.
1.0°
10 cm/3.9 in.
1.5°
9.25 cm/3.7 in.
2.0°
9.0 cm/3.6 in.
2.5°
8.25 cm/3.3 in.
3.0°
7.5 cm/3 in.
0
1 2
5
10
13
0.5
1.0
1.5
2.0
2.5
3.0
x
x
x
x
x
x
Distance
[cm]
Compass
Deviation
[ ° ]
F
IG
. 3 - 2: D
EVIATION OF A COMPASS BY AN OPERATING
FSG 90F(X)
,
DEPENDS ON THE DISTANCE
BETWEEN COMPASS CENTER AND CONTOUR OF TRANSCEIVER
