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LEDTaxiway Centre Line, Stop Bar and IntersectionMedium Intensity Inset Light

Compliance with StandardsICAO: In compliance with Annex 14FAA: Compliant to AC150/5345-46 (current edition), photometry L-852C and L-852KNATO: In compliance with STANAG 3316

UsesLTS/LTC taxiway lights are used in CAT I, II & III as: ■■ Centreline lights, in straight and curved sections and on rapid exit taxiways■■ Stop bars■■ Intermediate holding position lights■■ De-/anti-icing facility exit lights■■ Apron lead-in lights■■ Runway guard lights where applicable at night

Specific Benefits of the LED Lights

Features

■■ Very low energy consumption (typically 15 W per side).■■ Extremely reduced maintenance, thanks to the reliability of the LEDs: calculated MTBF of 56,000 hours at 6.6A.■■ The traffic efficiency and the availability of the taxiways are considerably increased thanks to the reduction in access

required for maintenance. Optimum and homogenous light distribution along the lights installed on the same portion of taxiway.

■■ The LED emission directly ensures the correct colour. No energy losses or colour shifts due to the absence of colour filters.

■■ Connection and operation are fully compatible with the classic airfield lighting series circuits. There is no need to replace the CCRs, series transformers or cables, and the lights are fully dimmable like a traditional halogen light.

■■ Optionally, failure of LEDs can be monitored similarly to tungsten halogen lights.

■■ Even with the very low energy consumption, no problem can occur with any FAA-compliant 6.6 A series transformer up to 300 W (100 W in case of monitoring option).

■■ Full compatibility with F-range and TLP lights allow for a low cost and progressive evolution of the airfield lighting toward a new, LED-based technology.

■■ For new installations, low power demand means low installed load, smaller CCRs and transformers, etc. Substantial savings on installation are guaranteed.

■■ Very low working temperature, ensuring a long life of the gaskets as well as slower chemical degradation reactions.

■■ Galvanic separation from the series transformer, protecting the electronics against over voltage.■■ When turned on, light rise time is negligible. In case of a stop bar, it is highly important to communicate without delay

the interdiction of access to the runway to the pilot to avoid any risk of collision. LED lights offer a short predictable and constant response time over the whole brightness range.

Several years of field experience by ADB with LEDs in an extremely adverse environment are a guarantee for the benefits of the LED lights. Patent granted in various countries.

■■ Full range of uni- or bi-directional, optionally switchable 8” dia. inset lights covering all taxiway applications.

■■ Extensive use of aluminium alloys reduces fixture weight for ease of handling in the field and in the workshop.

■■ Only 1 mm of window below the pavement level, for sustained optimal light output under heavy rainfall.

■■ Smooth outer surface of light cover avoids tyre damage.■■ Double watertightness barrier.■■ Designed and built with simplicity and ease of maintenance in mind.■■ Minimal number of parts due to multifunctional components.■■ The modular design allows a quick change of the components and hence an

easy field customisation according to the application.■■ Prisms are clamped to the cover via a multiple contact points gasket by means of a multifunctional LED holder.

This makes prism replacement by airport maintenance staff fast and easy. Neither sealing compound nor resin is required.

■■ No optical adjustment required after replacement of the LEDs or the prism.■■ Standard adapter rings for installation on 12” FAA deep or shallow bases.■■ Specific rings available to fit mounting bases and seating rings to other

standards.■■ Installation jig and removal tool are available.■■ Plug for gas tightness testing of fixture after service/maintenance.■■ Environment friendly lighting fixtures (no cadmium plating).■■ Optionally, LED lights can be equipped with an internal monitoring function

of the individual light source. In case of a defect, the LED light automatically disconnects from the secondary side of the lamp transformer, resulting in an open circuit condition. Therefore external lamp fault detection devices of Constant Current Regulators and Individual Lamp Control and Monitoring Systems (ILCMS) can be used to monitor failed lights.

Fig. 1: LTS-1-R/N

Fig. 3: LTC-2-G/G

Fig. 2

Use Taxiway Centre Line(all CAT. I - II - III applications except stop bar)

Stop barCAT. I - II - III

Description Uni- or bi-directional UnidirectionalType Straight sections Curved sections Straight sections Curved sections

Colour green or yellow green or yellow red redPhotometric curve Fig. 6.1 & 6.3 Fig. 6.2 & 6.4 Fig. 6.5 Fig. 6.6

Selection Chart

Fig. 5

Photometric PerformancesSource: LEDs – 15 W per side. Nominal lifetime 56,000 hrs at 6.6 A.

Light Beam Colour Fig.

Performances (Typical data)

Average Intensitywithin the

main beam (cd)

Main beam spread

Horiz.(°) Vert.(°)

LTS-1or

LTS-2

Straight narrow

Green 6.1 475

-3.5 to +3.5 1 to 8Yellow 6.3 325

Red N.A. N.A.

Straight wide

Green 6.1 460

-10 to + 10 1 to 8Yellow 6.3 315

Red 6.5 380

LTC-1or

LTC-2Curved

Green 6.2 260

-3.5 to + 35 1 to 10Yellow 6.4 170

Red 6.6 185

Design1. Aluminium alloy cover2. Labyrinth gasket3. Prism gasket (1 or 2)4. Prism (1 or 2)5. Flat seal6. Collimator lens7. LED assembly8. Cover / Inner cover gasket9. Aluminium alloy inner cover, with transformer(s)and printed

circuit board Includes FAA L-823 style 6 long life 2-pole plug (1 or 2) moulded on heat resistant wires

10. Pressure release plug with O-ring

1

2

3

4

5

6

7

8

10

9

Photometric Curves according to ICAO

Taxiway Centre Lin

Stop Bar

Fig. 6.1

Fig. 6.3

Fig. 6.5

Fig. 7 Fig. 8

Fig. 6.2

Fig. 6.4

Fig. 6.6

Wide beam (narrow beam in dotted lines) - green light - 2 x 15 W

Wide beam (narrow beam in dotted lines) - yellow light - 2 x 15 W

Straight sections - red light - 1 x 15 W

Curved sections - green light - 2 x 15 W

Curved sections - yellow light - 2 x 15 W

Curved sections - red light - 1 x 15 W

LTS-2-G/G

LTS-2-Y/Y

LTS-1-R/N

LTC-2-G/G

LTC-2-Y/Y

LTC-1-R/N

Notes:All above curves are for CAT III applications. LTS lights also fully comply with the photometric requirements of FAA AC 150/5345-46A specification, for L-852 A, C, J and K.The corresponding detailed light distribution curves are available upon request.

Dia 214Dia 203Dia 184 1

2

34

125

115

1 12.7

Installation & Outline Dimensions (mm)

1. Light2. Shallow base3. Secondary wires4. Resin

Installation on 8” dia. HPI shallow base

8 7

12

3

4

12

5

6

11

109

Dia. 305

Sta

ndar

d: 6

10; O

ptio

n: 4

00, 5

00. 1. Light

2. Adapter ring3. Deep base4. Primary connectors5. Rubber grommet6. Conduit7. Series transformer8. Spacer9. Outer earth terminal10. Inner earth terminal11. Secondary connector12. Flange ring

Installation on FAA L-868 base

Weight and Volume

Dimensions (mm) Gross weight (kg) Net weight (kg)

8” light 210 x 210 x 100 3.9 3.7

8” shallow base 230 x 230 x 150 2.8 2.6

Light with shallow base 230 x 230 x 150 6.7 6.3

Fig. 9

Finish Environment-friendly, precision-cast aluminium alloy cover, optical support and inner cover assembly.Passivated, plain stainless steel hardware.

Electrical Supply6.6 A through one or two series transformer(s) (cat. leaflet A.06.110). LTS/LTC lights have been designed to work with any FAA compliant transformer up to 300 W without affecting the performances or the lifetime of the light or the transformer.

Installation1) On a shallow base (Fig. 7) This method is used in existing pavements.The 8” or 12” dia. base is secured in the pavement by means of resin.

Correct positioning and levelling are obtained with a jig with sighting telescope. Wires between the light and the series transformer are installed in saw cuts in the pavement filled with resin. Mounting on existing or new, larger diameter bases, is made possible by means of dedicated adapter rings.

2) On a FAA L-868 size B steel base (Fig. 8) This method of installation is used when building new or resurfacing existing taxiways. The 8” dia. LTS or LTC

light is mounted in an 8” to 12” dia. adapter ring bolted on the base. The bases are interconnected by means of conduits protecting the cables. The series transformer is installed under the light or better, in a separate pit. See catalogue leaflet A.05.120.

For detailed information, please refer to the mounting instructions supplied with the fittings. ADB’s technical team is at the disposal of users and contractors to provide guidance and advice in order to help

solving any particular installation problem.

Ordering Code

LTS/LTC

Light beam S = Straight C = Curved

Colour 1 (left side) 2 = Red 3 = Green 4 = Yellow 5 = Blue 9 = Blank (no light)

Colour 2 (right side) 2 = Red 3 = Green 4 = Yellow 5 = Blue 9 = Blank (no light)

Power Supply T = 5 steps Series 6,6A

Connection 1 = 1 x 2-Pole Plug 2 = 2 x 2-Pole Plug 7 = 1 x French 3-Pole Plug 8 = 2 x French 3-Pole Plug

Monitoring Option 0 = No monitoring 4 = Internal monitoring

Fiting Version A = Standard version G = German (Style 1 plugs)

Options 0 = No option 1 = Compliant to MOS 139 standard

Version 9 = Optical redesign from 2013/08

1 L T S 3 4 T 1 0 A 0 9

Center of curve

Color rightColor left

Color rightColor left

Suggested Specification

The LEDs taxiway centre line inset lights shall comply with ICAO Annex 14. Their performance shall meet the photometric requirements of FAA AC 150/5345-46 (current edition), for L-852A, L-852C, L-852J and L-852K. The lights shall be suitable for use under Category I, II and III conditions. The projection above ground level shall not exceed 12.7 mm.

The luminous sources shall be electroluminescent diodes assemblies; the lifetime per assembly (before the first LED fails) will be 56,000 hours at full intensity. Power consumption will not be higher than 15 W per side.

The required beam colour shall be obtained without use of any colour filter. Colour coordinates for the 5 points of the primary beam shall comply with ICAO Annex 14 – 2.2.4.

The fitting shall be suitable for mounting on a 8“ dia. base or on larger diameter bases by means of adapter rings. It shall be possible to install the lights on existing 6.6 A series circuits in addition to, or in replacement of, conventional incandescent or halogen lights without having to change any other element (CCR, primary and secondary cabling, series transformer, etc.).

Watertightness of the light fitting shall be ensured by means of a double water barrier.

The lights shall resist all stresses imposed by impact, rollover and static loads of present day aircraft without damage to the light or aircraft or vehicle tires.

All components shall be corrosion proof without using environmentally aggressive metal protective coatings.Except for the prisms and the covers, all lights, uni- or bi-directional, shall use the same components.

The prisms shall be user-replaceable without need to apply sealing compound. No optical adjustment shall be required after replacement of LEDs or prism.

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order number DOCA03450EV7 subject to modifications

ADB Airfield Solutions Leuvensesteenweg 585 B-1930 Zaventem Belgium

Phone: +32 (0)2 722 17 11 Fax: +32 (0)2 722 17 64info.adb@adb-air.comwww.adb-airfieldsolutions.com