Aviation · Helideck lighting
Circle & H – the TD/PM marking lit, certified and built to take the landings
TRANBERG® IMT Circle & H is the LED lighting system that marks the touchdown/positioning circle and the H on the helideck to CAP 437 and ICAO Annex 14. Sealed Ex fixtures in marine-grade aluminium with an anti-slip surface, an interlocking design that withstands the shear forces from landing gear, and a mounting arrangement that halves the holes in the deck. As a stand-alone system or integrated with TEF 4600 helideck control.
- CAP 437 and ICAO Annex 14
- ATEX · IECEx Zone 1
- IP66/67
- Designed and made in Norway
Why Circle & H
Four reasons the system is chosen for new and existing decks
Compliant with CAP 437 and ICAO
Developed in close dialogue with the UK CAA and covered by CAA International statements of compliance for both Mk I and Mk II. The green and amber light colours follow ICAO Annex 14 Vol. 1, Appendix 1.
Ex certified for Zone 1
The fixtures are marked Ex eb mb IIB T4 Gb (ATEX category 2), with certificates DEKRA 13 ATEX 0173 and IECEx DEK 13.0059. Ex e connectors are supplied with the system.
Built for landing gear and weather
Marine-grade aluminium with anti-slip coating, UV-resistant polycarbonate lens and a sealed LED unit. The interlocking construction spreads the shear forces from wheels and skids along the whole profile.
Simple installation, minimal maintenance
Mounting plates for the H and the circle, cable trays and junction box are laid out with the supplied tools and fixed with stainless M6 bolts. No lamp changes, instant re-ignition, any mounting orientation.
Helidecks
From the first drawing to the first landing
A helideck project passes through the hands of the same engineers from lighting calculation to commissioning and third-party verification. That is why it works the first time.
How the system is built
Fixtures, mounting plates and cable trays – one delivery
The H is built from short fixtures in signal white and holly green with green LEDs, the circle from sunflower-yellow fixtures with amber LEDs. All fixtures sit on mounting plates joined with interlocking sections, the cabling runs in trays to a junction box, and the whole system runs on 24 V DC with RS-485 communication to the control system.
- H fixtures: white/green, green LED (short version in Mk II)
- Circle fixtures: sunflower yellow, amber LED
- Mounting plates with angled or straight connection between H and circle
- Cable trays and junction box, Ex e connectors included
- Bolted down with stainless A4 M6 bolts and Duralac
Technical data
The fixtures in numbers
| Type | ILED Aquarius Circle & H 2.0 (Mk II), fixtures for the TD/PM area |
|---|---|
| Light colour | Green (H) and amber (circle) to ICAO Annex 14 Vol. 1, App. 1 |
| Voltage | 24 V DC ±10 % |
| Power / current | Max. 8 W / 377 mA per fixture |
| Ex marking | Ex eb mb IIB T4 Gb – ATEX category 2, Zone 1 |
| Certificates | DEKRA 13 ATEX 0173, IECEx DEK 13.0059; CAAi statement of compliance (Mk I and Mk II); HCC Malaysia |
| Ingress protection | IP66/67 |
| Ambient temperature | −30 °C to +55 °C |
| Housing | Marine-grade aluminium with anti-slip coating; UV-resistant polycarbonate lens |
| Connection | Ex e connectors, RS-485 communication |
Documentation
Manuals
Datasheet TPS6671, Ex certificates and CAAi statements are sent on request, together with a lighting calculation for your deck.
The complete helideck
The products that go around Circle & H
Contact
Talk to the aviation team
Send us the GA drawing or the deck dimensions, and we set up Circle & H with control, perimeter lights and floodlights as one delivery, with lighting calculation and documentation ready for class and authority.
Planning a helideck?
Request a quote for Circle & H, or let our project team take the whole deck from lighting calculation to commissioning.
