Prohibited Landing Marker (PLM)
Helideck Prohibited Landing Markers are essential offshore helideck safety equipment.

CAP 437 – For certain operational or technical reasons an installation may have to prohibit helicopter operations. In such circumstances, where the helideck cannot be used, the ‘closed’ state of the helideck should be indicated by use of the international standard ‘landing prohibited’ signal, yellow cross on red background, given in the Rules of the Air and Air Traffic Control Regulations, except that it has been altered in size to cover the letter ‘H’ inside the aiming circle.
The www.heliportsequipment.com Prohibited Landing Marker package is compliant with CAP 437 Standards and includes the following:-
- CAP437 compliant 4m x 4m Marker – Red with diagonal yellow cross.
- Manufactured in Highly durable PVC coated Polyester.
- Reinforced lashing rings embodied into the markers construction.
- High quality sisal rope of suitable diameter and length for lashing the marker down onto the helideck.
- Storage Bag manufactured in highly durable PVC coated Polyester with rope tie.
- Helideck/Vessel name on storage bag – optional – ADD $45.00.
- For full specification sheet click the link below.
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Helideck Prohibited Landing Markers
Prohibited Landing Marker
For certain operational or technical reasons an installation may have to prohibit helicopter operations. In such circumstances, where the helideck cannot be used, the ‘closed’ state of the helideck should be indicated by use of the international standard ‘landing prohibited’ signal, yellow cross on red background, given in the Rules of the Air and Air Traffic Control Regulations, except that it has been altered in size to cover the letter ‘H’ inside the aiming circle.
Dimensions: 4m x 4m Red with diagonal yellow cross
Manufactured in Highly durable PVC coated Polyester
Complete with storage bag.
Download Prohibited Landing Marker Datasheet
Download BSEE – NTL No. 2011 N-08
We promise to ship to you, wherever you are in the world within 5 working days. International shipping (outside of UK mainland) add $195.00 or if you want to use your own shipping agents to collect from our facility we will prepare and pack your order ready for international shipping free of charge.
The Heliportsequipment.com Landing Marker meets the standards, recommendations and specifications detailed by the following international advisory and standards organizations:
- UK CAA – CAP437 – Standards for Offshore Helicopter Landing Areas,
- UKOOA – Guidelines for the Management of Offshore Helideck Operations,
- UK Health and Safety Executive (HSE), UK
- The Helicopter Safety Advisory Conference – HSAC RP 2008-01 – GULF OF MEXICO HELIDECK MARKINGS specification,
- United States Department of the Interior Bureau of Safety and Environmental Enforcement – NTL No. 2011 N-08 – effective date 10/12/2011 (CLICK LINK BELOW FOR DETAIL)
- Statens Luftfartsvæsen (SLV) – Civil Aviation Administration – Denmark – BL 3-5 – Regulations on helidecks on offshore installations.
- Canada – Nova Scotia Offshore Petroleum Board – Safety Directive – OFFSHORE HELIDECK STANDARDS
- National Offshore Petroleum Safety Authority (NOPSA), Australia
- Oil Industry Safety Directorate (OISD), India
- Petroleum Safety Authority (PSA), Norway
- UK Health and Safety Executive (HSE), UK
- NORMAM Maritime Authority Standards (Brazil) – NORMAM-27