Offshore Aviation Services


OEG are leading suppliers of Offshore Aviation Services from our established network of global bases our highly qualified and skilled team can provide oil and gas operators and platform owners packaged solutions to meet their aviation requirements. 

From inspection services compliant to UK CAA CAP 437 to rental or purchase of helifuel systems, tanks and associated spares, OEG Offshore offers a one-stop solution for your offshore aviation needs. 

Through OEG's acquisition of Harran Limited, a leading offshore aviation refuelling services specialist, customers have access to a wider range of helifuel equipment and services from locations in the UK and worldwide. 

Harran Limited, an OEG Offshore company

Our team has over 30 years of inspection experience in the offshore aviation industry.  Our main areas of expertise include Offshore Helideck and Refuelling System Inspections to UK CAA CAP 437 as well as Refuelling Operator Training and Refuelling Systems, Helideck Friction Testing as well as Maintenance, Spare Parts and Consumable Supply. 

As regulations change, we keep customers informed of the updated requirements to ensure compliance with the current CAP 437 regulations.

Download Offshore Aviation Services Flyer

Helifuel Audit by OEG OffshoreA technician inspects a sample of Jet A-1 fuel on an oil and gas platform, offshore Australia Offshore Aviation Services to UK CAA CAP 437 from OEG Offshore

We offer three-monthly, six-monthly and annual audit inspections of Helicopter Fueling Systems in compliance with the UK CAA CAP 437 Guidance Standard.  Our helifuel services also include commissioning, testing and maintenance of offshore systems and components to UK CAA CAP 437. We can also provide testing procedures including hose pressure tests and flow meter calibration tests. We supply a full range of system spare parts and consumables, fuel sampling equipment and fuel delivery & transfer hoses.

Offshore fuel installation inspections and audits should be conducted to ensure that all maintenance procedures required by the fuel system manufacturer, local aviation authority and any other regulatory body requirement are strictly followed. Call OEG Offshore and speak to our experienced technicians.

Helideck Audit Inspections

We provide periodic inspection of offshore helidecks to the UK CAA CAP 437 standard, Australian CAAP 92-4 and relevant Dangerous Goods regulations.  A Certificate of Audit is issued with a full inspection checklist and audit report, noting observations and any non-compliance items.  

We also offer Helideck Surface Friction Testing to verify compliance with UK CAA CAP 437 ch.3.7 recommendations for the safe removal of a helideck landing net.

Helideck Friction Testing is carried out on oil and gas as well as offshore wind farm installations, FPSO vessels, military vessels and commercial yachts using the Micro Grip Tester which is approved and currently meets CAP 437 requirements. An electronic print out is included in the written report provided.

Helideck Duty Holder Audit -  OEG can also provide our customers with an interim duty holder Helideck Audit report (CAP 437).  The auditing complements our helideck friction testing, and both services can be undertaken by our fully trained engineers offering considerable savings in terms of bed space and flights.

OEG Offshore is experienced in working to weather-dependent schedules of the oil and gas industry.

Download Helideck Inspection Services Flyer

Helideck Surface Friction Test Offshore

Surface Friction Test using a Micro Grip Tester

Helideck Friction Test Reading

Friction Test Report from a Helideck Inspection

OEG carrying out Helideck Surface Friction Testing aboard an IMR vessel berthed in Louisiana, USA.

OEG provides a practical, 'hands-on' training course based on our experience and knowledge of worldwide offshore rules and regulations including UK CAA CAP 437, Australian CASA and APPEA.

The focus of our course is to ensure the Helicopter Refuelling System Operator has all the competencies required to safely deliver clean fuel to helicopters.

Course Contents and Objectives:

- Familiarize the operator with the main components and characteristics of an offshore refuelling system
Understanding of world's best practice rules and regulations to ensure compliance
Understanding quality assurance routines and responsibilities
Daily sampling requirements, log sheet entry, receipt of fuel as per CAP 437
Understanding the HSE aspects of handling Jet A-1 fuel
Understanding fuel quality problems and the ability to deal with contamination
- Ensuring basic checks are in place to confirm the operability of the system
Awareness of potential safety problems and the contingencies to be in place

We are experts in the design and build of helifuel system packages for rental or outright purchase, as well as the full range of spare parts and fuel sampling equipment.  All refuelling systems and equipment are fully compliant to the internationally recognised offshore guidance standard UK CAA CAP 437. 

Systems can be built and configured to each customer's purpose.  Technical specifications and equipment package details are available on request. 

Inspection of the Ocean Apex Refuelling System by OEG Offshore

Our experienced team recently carried out a pre-commissioning inspection of a helicopter refuelling system as well as an annual helideck survey inspection, all compliant to UK CAP 437, on-board the Ocean Apex, offshore Western Australia.


Offshore Helifuel System - Dispensing cabinet
Offshore Helifuel Dispensing Cabinet - part of a large refuelling package designed and built for Saipem
Helifuel Equipment Refurbishment
Harran service engineer carrying out a pressure and leak test on a helifuel coupling after a strip down and repair.

Our extensive stockholding covers items required to service, maintain, repair and replace all the equipment from tank to aircraft. Working closely with our onsite technicians and our inspection engineers we pride ourselves in finding a solution to any problem.

In addition, we can source other parts of the helideck structure for specific customer projects, such as helideck landing area illumination, perimeter and landing netting installation and testing, roller guide boxes for the safe and efficient handling of fuel hoses and installation of earth proving units.



Shell Water Capsules

Using a fuel water detector will help you find out if you have water in your fuel and allow you to deal with it before it becomes an issue for your aircraft.

Free water in aviation fuel can lead to ice formation, filter blockages and consequent engine failure. It can also allow microbial growth in fuel tanks, which can cause fuel spoiling and filter blocking. Acids generated by the microbes can even cause corrosion damage.

Low concentrations of water suspended in fuel cannot be detected by visual inspections.

Use fuel water detectors daily to test the fuel stored in in-service tanks, hydrant filter drains, loading filter drains, fueller filter drains, hydrant dispensers, fueller tanks etc.

A selection of spare parts is available for sale from stock to order.  

Africa, Americas, Europe & Middle East: 
E:  T: +44 (0)1224 891300

Asia & Australia:
E:   T:+61 (0)8 9497 1600 

- Jar, c/w Lid 3.5 Ltr GJ1105/B

- Basket, for 3.5 Ltr Jar GJ 1106
- Capsule, Water Detection
- Syringe, Nylon 5ml
- Syringe, Jet Fuel (one hand)
- Wipes, Kimtech Prep/Process 7644
- Wipes, Chicopee for Solvent
- Lead, Earth 2.5m (ink S92)
- Lead, Earth Gravity Nozzle

In addition, we can also supply rental and sale of offshore rated Helifuel tanks, also known as offshore Jet A-1 Fuel Tanks together with offshore tank maintenance services including inspection, cleaning, repairs and leak/pressure testing.

Please contact for further details and availability.