Led Light Assemblies - 71554( ) Series - Whelen Engineering Company OR5001V Installation And Service Manual

MODEL 71554 ( ) SERIES
LED TAIL POSITION LIGHT ASSEMBLY
71554 Series in our newest LED Tail Position Light. Exact Footprint for Whelen
Models A555A and 71011 Taillights. Available in horizontal or vertical
mount.
Model 71554( ) Specifications
Model Part
Mount
Numbers Number
7155401 01-0771554-01 Horizontal
7155402 01-0771554-02 Vertical
7155411 01-0771554-11 Horizontal
7155412 01-0771554-12 Vertical
Operating Instructions
EQUIPMENT LIMITATIONS: An approved tail position light assembly
should be mounted as far aft on the aircraft as practicable on a ther-
mally conductive surface. The baseplate must be mounted parallel to
the vertical and horizontal centerlines of the aircraft to project the
patterns properly.
Certain types of installations may require additional testing.
CONTINUED AIRWORTHINESS: The 71554( ) series LED tail position
light assembly is designed with 6 LEDs. Should any one LED fail the
unit must be repaired or replaced. Note: To reduce eye strain, use an
optical filter such as dark glasses or a Blue covering dome during
LED inspection. Inspect the lens. Replace if there is excessive
scratching, pitting, discoloration or cracking.
INSTALLATION PROCEDURES: The following information is to assist
you in installing a Whelen LED tail position light.
1. Choose the appropriate 71554( ) light assembly.
2. Using the mounting detail information provided, prepare the
aircraft for means to secure the LED light assembly.
3. Connect the position light inputs according to the chart shown.
Connect the power lead to an appropriate sized breaker.
Connections to be in accordance with FAA approved methods.
4. Remove and discard the two screws and nuts holding the retain-
er to the unit. Carefully remove the lens retainer and lens from the
assembly. CAUTION! Do not touch the LED surface with either
fingers or sharp objects. This could soil or damage the lens and
effect the optical performance of the LEDs.
5. Install light assembly and insure that all leads are clear of any
obstructions. Note that proper orientation is achieved with the
drain hole down.
6. Reinstall the lens and confirm proper gasket fit.
7. Install the lens retainer. Using appropriate hardware secure as
required. Secure light assembly using vibration resistant thread-
ed fasteners.
8. When necessary, waterproof the light base to aircraft. Apply
single part silicone (RTV) or equivalent around any open area
where water could get in. Do not cover drain hole.
9. Check all avionics systems for interference from this installation.
10. A flight check should be performed by a properly
certified pilot.
46
Document #05131 Rev. D
The document reference is online, please check the correspondence between the online documentation and the printed version.
LED LIGHT ASSEMBLIES
LED
Voltage Approvals
Color
28 VDC
Aviation FAA TSO-C30c/
White ETSO-C30c Type III
14 VDC
Operational Input
Weight
Voltage Current
22-30 VDC 0.125 Amps
0.17 lbs. (91gm)
11-15 VDC 0.25 Amps
Operation
(cont'd)
11. Update aircraft records, complete Form 337 and obtain
FAA field approval for installation, as necessary.
Dimensions and Mounting Detail 14 VDC
Figure 46a
HORIZONTAL
01-0771554-11
4-40x1/2"
MS51957-17 (2x)
2.36"
(60mm)
Nut (for shipping
purposes only)
.96" (24mm)
Drain Hole
1.13"
(29mm)
9"±1"
2.17"
(229mm)
(55mm)
TOP
1.71"
(43mm)
6"
20 AWG WIRES MIL-22759/43
(152mm) ±1"
POS 1 = 14VDC (RED)
POS 2 = GROUND (BLACK)
Mounting Detail
Model
C
L
7155411
0.875"
(22mm)
1.750"
(44mm)
Model
7155412
Ø1.23" (31mm)
C
L
Ø.125 (32mm)
(2 Places)
TSO-C30c TYPE III SO C
APPROVED
Mounting
Exposed
Hole
Height
Pattern
1.36" (35mm) 1.75" (45mm)
VERTICAL
01-0771554-12
4-40x1/2"
MS51957-17 (2x)
2.36"
(60mm)
Nut (for shipping
purposes only)
.96"
Drain Hole
1.13"
(29mm)
9"±1"
(229mm)
1.71"
(43mm)
TOP
2.17"
(55mm)
6"
(152mm) ±1"
20 AWG WIRES MIL-22759/43
POS1 = 14VDC (RED)
POS2 = GROUND (BLACK)
Ø1.23" (31mm)
Ø.125 (32mm)
(2 Places)
0.875" (22mm)
1.750"
(44mm)