Business Details
44 Years
experience
Emergency
services
Trusted Aircraft Maintenance & Solutions Since 1982
Founded in 1982 by George and Liane Stevenson, Rocky Mountain Aircraft has evolved from a small Calgary-based operation into a globally recognized leader in aviation support. Our expertise spans aircraft maintenance, engineering, avionics, and parts supply, with a particular focus on the De Havilland Twin Otter and other business and general aviation aircraft. As a Transport Canada- and EASA-approved maintenance organization, we combine decades of technical knowledge with a client-centric approach to deliver tailored solutions for fleets of all sizes. Our in-house engineering department specializes in certifications, modifications, and innovative problem-solving, supported by a team of over 70 professionals dedicated to maintaining the highest standards of safety and reliability.We pride ourselves on building long-term relationships with clients through transparent communication, technical excellence, and a commitment to addressing even the most complex aviation challenges. With facilities at Springbank Airport and mobile teams operating worldwide, we provide comprehensive services ranging from heavy overhauls to emergency AOG support. As a family-owned business now led by Managing Director Shannon Stevenson, we remain focused on advancing commercial aviation through sustainable practices and cutting-edge technological integration.
Services
Aircraft Maintenance
Avionics Solutions
Parts Supply
Custom Modifications
Engineering Certifications
Details
- Year established: 1982
Highlights and features
- We offer 40+ years of specialized expertise in De Havilland Twin Otter maintenance and modifications
- Our in-house engineering department holds TCCA, FAA, and EASA certifications for custom solutions
- Global field service teams provide emergency AOG support on every continent
- Family-owned operation combines institutional knowledge with innovative aviation technologies
- Comprehensive one-stop-shop services reduce downtime through integrated maintenance and parts supply
Associations and certifications
- Transport Canada
- EASA
Services
Aircraft Maintenance
Our Transport Canada- and EASA-approved maintenance teams provide comprehensive support for business and general aviation aircraft. Specializing in De Havilland Twin Otter models, we offer heavy overhauls, structural repairs, and routine maintenance at our 25,000 sq ft Calgary facility or through global field teams. Services include corrosion inspections, engine changes, and customized maintenance programs for government agencies and private operators.
Avionics Solutions
We deliver tailored avionics installations and upgrades for commercial and private aircraft, including EFIS systems, ADS-B compliance, and TAWS/TCAS integration. Our TCCA-certified team designs, installs, and certifies complete flight deck solutions while providing ongoing technical support. Capabilities include wiring harness fabrication and repairs for both legacy and modern avionics configurations in fixed-wing and floatplane operations.
Custom Modifications
Our engineering experts develop specialized modifications for unique mission requirements, including scientific equipment installations and structural enhancements. With extensive experience in DHC-6 Twin Otter modifications, we offer STC-certified solutions like emergency exit hatches, fuel system upgrades, and avionics integrations. Each project receives full design, certification, and implementation support from concept to completion.
Engineering Certifications
We provide certification services for aircraft components and modifications through Transport Canada, FAA, and EASA approvals. Our portfolio includes Supplemental Type Certificates (STCs) for oxygen systems, lithium-ion battery installations, and structural replacements. The team specializes in solving obsolescence issues through modern component replacements while maintaining regulatory compliance for CAR-523 and CAR-525 aircraft.
Parts Supply
Our parts department stocks new, overhauled, and hard-to-find components for De Havilland Twin Otter aircraft and PT6A engines. Services include rotable exchanges with full traceability, custom wiring harness fabrication, and flight control repairs. We offer rental units during repair periods and maintain proprietary parts manufactured under our own STCs and PDAs for critical aircraft systems.
People
Shannon Stevenson
Managing Director
Third-generation aviation leader with extensive experience in commercial aircraft operations and maintenance. Oversees strategic direction while maintaining hands-on involvement in technical projects. Advocates for sustainable aviation practices and technological innovation.
Mel Cornelius
Director of Maintenance
Certified aircraft maintenance engineer with over 25 years specializing in turbine aircraft systems. Leads technical teams in complex repairs and regulatory compliance. Recognized expert in Twin Otter maintenance protocols and field service operations.
Andy Cook
Business Development Manager
Aviation industry veteran with deep connections in global fleet management. Focuses on expanding client relationships through tailored service packages. Brings technical expertise to sales and leasing operations for business aircraft.
Tim Shaw
Avionics Manager
Certified avionics specialist with 20+ years implementing advanced flight deck solutions. Oversees installations from basic VFR upgrades to full glass cockpit conversions. Maintains key manufacturer partnerships for cutting-edge system integrations.
Erik Roy
Manufacturing Manager
Precision manufacturing expert responsible for proprietary part production under STC and PDA certifications. Develops innovative solutions for obsolete component replacement. Ensures strict quality control for all in-house fabricated aircraft systems.
Questions
What aircraft types do you specialize in?
We specialize in De Havilland Twin Otters and other turbine business/general aviation aircraft including Beechcraft King Air series and 1900D models.
Do you provide international services?
Yes, our mobile maintenance teams operate globally with field service capabilities on every continent for emergency support and scheduled maintenance.
Can you handle complex aircraft modifications?
Our engineering team develops custom STC-certified modifications for unique mission requirements, including structural enhancements, scientific equipment installations, and avionics integrations.
What certifications do you hold?
We maintain Transport Canada and EASA approvals as an Approved Maintenance Organization (AMO) with TCCA, FAA, and EASA certifications for engineering and manufacturing projects.
Do you stock hard-to-find aircraft parts?
Yes, our parts department specializes in new, overhauled, and obsolete components for Twin Otters and PT6A engines with full traceability and exchange programs.
How do you support avionics upgrades?
We offer complete avionics lifecycle services including NEXT GEN upgrades, ADS-B compliance, and custom wiring harness fabrication with TCCA design approval capabilities.
