2015 AeroLEDs LLC
0003-0004 Rev: E
Page 2 of 6
Troubleshooting
: Check for bus voltage at power input wire
to the light, reestablish power if inadequate power is found.
Check for excessive resistance at light ground and repair if
necessary. Remove and bench check light if wiring is verified
good.
INSTALLATION PROCEDURES:
1.
The installation procedure described in the following text
is for a single light installation, and multiple light
installations. The pulsing function of the HX model landing
and/or taxi light(s) is a self-contained feature, and does
not require the use of an externally mounted pulse light
controller. Wiring diagrams are provided for single, dual,
and quad light installations for the HX model to illustrate
typical wiring for enabling the pulsing mode and wig-wag
synchronization. For the LX model lights, existing wire and
switches and breakers will be utilized. For the HX model
lights, an additional wire and switch will be required to
enable the pulse mode, and for multiple lights an
additional synchronization wire will be required to
Please
read through all instruction steps before performing light
system installation
.
2.
Refer to the aircraft manufacturer’s service manual and/or
illustrated parts catalog: Locate the landing and/or taxi
light system installed in your aircraft. This will provide
details on the location of the components and the
assembly details.
3.
WARNING
: If the aircraft being modified incorporates a
remote sensor (flux gate) compass: DO NOT mount the
LED light within 24 inches of the remote compass
components. After installation of the LED lighting system,
a compass swing MUST be performed with the
landing/taxi lights ON & OFF and the position error card
must be annotated accordingly.
4.
WARNING
: DO NOT mount the LED light with less than 4
inches clearance to exhaust system components unless an
adequate heat shield is utilized to block radiant heat.
5.
WARNING
: On all aircraft that are being modified it is
IMPORTANT to check the size of the power supply wire to
the landing lights. Confirm that wire of sufficient wire
gauge is installed for the wire length:
12 Volts: 16GA for up to 25 feet, 18GA for up to 20 feet,
20 GA for up to 12 feet.
24 Volts: 16GA for up to 100 feet, 18GA for up to 80 feet,
20GA for up to 50 feet.
If the aircraft power supply wire is undersize it MUST be
removed and a new wire installed in its place. Reference:
AC43.13-1B Paragraph 11-66(d) and Figure 11-2.
6.
REMOVAL:
a.
Prepare the aircraft for maintenance: Make sure all
switches are in the OFF/NORMAL position,
disconnect the aircraft battery(s), disconnect power
from the aircraft, attach maintenance warning tags,
pull landing/taxi light circuit breakers.
b.
Reference airframe manufacturers current
maintenance manual to remove any light covers to
gain access to lamp assembly(s) and bracket(s).
c.
Disconnect connection to positive aircraft power.
d.
Disconnect ground from aircraft power.
e.
Remove existing lamp(s) from brackets, mark and
retain hardware.
f.
Record weight of removed lamps.
7.
INSTALLATION:
a.
Reference airframe manufacturer’s current
maintenance manual and install LED light(s) in
brackets using retained hardware.
b.
Install suitable aircraft approved connecters to wires
coming from landing light assemblies and wires
routed from switch using appropriate wiring
diagram to the number of lights shown on page 3.
Note that the LX version only has screw terminals
for #6 ring terminals and does not support the pulse
function. The screw terminals are not polarized, so
the power and ground can be connected to them in
either order. The positive wire for powering the
pulse mode is connected to the yellow wire. Follow
the wiring diagrams for connecting the blue and
green synchronization wires for two and four light
installations.
c.
If necessary, install an appropriate aircraft approved
switch and circuit breaker of correct rating for the
lights installed for the pulse function. Original
landing light switch/switches may be used.
d.
Placard switches appropriately.
e.
Power up aircraft and verify proper operation of LED
light(s), in both pulsing and steady functions (as
appropriate to the installation)
f.
Using the appropriate aircraft maintenance manual,
verify that the light angle has not changed, and is
oriented & aimed in accordance with manufacturer’s
instructions.
g.
Perform EMI test to verify there is no interference
caused by light installation, sweep VHF frequencies
between 108.00MHz and 137.0MHz to test for
interference by turning the lights on and off at each
frequency. In the event that the lights cause
interference, the aircraft may not be a candidate for
installation of the LED bulbs, or may require the use
of shielded wire to eliminate the interference.
Please contact AeroLEDs LLC for assistance in the
event of interference.
h.
Reinstall any light cover(s) removed to gain access to
lamp assembly(ies) and bracket(s).
i.
Fill out and submit appropriate form 337 for work
accomplished, and enter appropriate logbook entry
detailing work.
j.
Perform an operational check of the landing/taxi
light(s) in accordance with 14CFR 91.407 (b) and/or
(c) to determine that the installed landing/taxi
light(s) provide enough light for night operations in
accordance with 14CFR 23.1383.
k.
Weight & balance change from standard position
light assemblies to LED landing light assemblies is
considered negligible. However, if additional power
supplies or pulse function controllers were removed
at this time, the weight & balance is to reflect those
changes, and actual weight and locations are to be
used for calculating changes.
