Meet the Team


Graeme Frater - Managing Director

Co-founder of the parent company and Managing Director of ACS Aviation with over 23 years experience within the industry. Graeme has developed excellent working relationships with key companies over the years and has experience working with several airlines and ATO's throughout the UK and Europe. Graeme is responsible for the day to day operation of the entire business and responsible for ensuring safety is the number one priorty.

Craig McDonald - Group Technical Director

Craig is the co-founder of the parent company and offers a wealth of knowledge with over 18 years experience in the aviation industry. Craig's background is in aircraft maintenance, MRO management and he is also a commercial airline pilot. Craig now manages and is responsible for the groups technical and engineering services plus business development in all areas including aircraft sales, projects, acquisitions, leasing, training and recruitment.

Bryan Dermidy - Maintenance Manager


Bryan's background is in offshore Electrical and Hydraulics Engineering. He possess a vast and diverse wealth of expertise accumulated over extensive experience working across different positions, employers, & industries. Bryan is a B1 licenced engineer and has experience working in a variety of technical and senior management positions on both rotary and fixed wing aircraft at several MRO's throughout Europe and Africa.

I take this opportunity to introduce myself as the Maintenance Manager at ACS Aviation Ltd. We sincerely value our customers and hence and I will ensure we do our very best to be as transparent and as helpful as we can in order to ensure that your aircraft is maintained to the highest standards. Please feel free to get in touch with me whenever you have any relevant queries.

Bryan Dermidy

Partha Dip Mahanta - Continued Airworthiness Manager

As a Continuing Airworthiness Manager and a licenced aircraft engineer, my job is to keep aircraft in an airworthy condition; i.e. technically fit for flight. Crucial part of my job is to certify aircraft release to service, carry out Airworthiness reviews and occasionally grant concessions.
Previously, I completed my training in Spacecraft Operations in DLR, Germany and Goonhilly Earth station, U.K. Also, I studied Spacecraft Systems, Space Policy and Law and Aircraft Engineering,Transport and Management at Southampton, London and Perth respectively.

Alex Fenton - Compliance Manager

With over 18 years’ experience in aviation quality management in a number of MROs and CAMOs, Alex is responsible for maintaining the quality management system for our EASA Part 145 and Part M approvals. Working closely with all functions his main duties are ensuring our company procedures are kept current with EASA regulations, auditing all departments to ensure compliance and maintaining the staff training and authorisation system.

Visitor Information

Perth Airport technical data
Perth Airport PPR Form
Perth Airport Fuel Prices

Visit Us

Click the link below to be redirected to google maps for directions.

Engineering Approvals and Capabilities

Part 145 approval UK.145.01145

Our CAA approved facility at Perth Airport, UK offers a wide variety of services to aircraft owners and operators including;

  • Scheduled maintenance
  • Unscheduled maintenance repairs and AOG recovery.
  • Sheet metal & structural engineering
  • Minor to major structural repairs
  • Engine Overhaul
  • Continental Diesel Engine Service Centre 
  • De-icer boot replacements / repairs
  • Windshield replacements
  • Calibration facilities for fuel quantity, weighing, torque, pressure, etc
  • Full avionic upgrades
  • TRIG Avionics Supplier 
  • Battery servicing
  • Wheel and brake servicing
  • Supply of spares & technical records
  • Interior design, manufacture & installation
  • Flight Tests

Approvals and Capabilities

In–house avionic design services.
We can provide in–house avionic engineering design and installation services, and, as agents, can provide avionic equipment from Honeywell, Garmin, Narco, Avidyne and Ryan. We provide facilities for both CAA/EASA as a Part 145, as well as a FAA approved.

Pre-buy aircraft inspection or survey.
If you are buying an aircraft it is essential that you invest in a thorough pre–buy aircraft inspection or survey and ACS Engineering can carry this out for you. We can ensure that the aircraft and paperwork records are thoroughly inspected by our skilled aircraft engineering team, which will:
• Assess and review aircraft maintenance history
• Check the full system of your aircraft, including engine runs
• Carry out a flight test

Airworthiness Review Certificate (ARC)
Every European Aviation Safety Agency (EASA) aircraft that is registered in the UK and is operating on a full EASA Certificate of Airworthiness (CofA) is issued, at renewal, with a non-expiring CofA that is supported by an Airworthiness Review Certificate (ARC).
Airworthiness Review Certificates are valid for a period of 12 months. In order to allow legal flight to continue you need to ensure that before your ARC expires that a new ARC is issued or that the existing one is extended.

Download Maintenance Rates

acs engineering logo footer

Contact Us

ACS Aviation Ltd,

Hangar 3,

Perth Airport, Scone,