Steven T. Fahey, P.Tech.(Eng.), P.L.Eng.

Professional Objectives

  • Design and certification of unique modifications and repairs to aircraft and helicopters
  • Increase the utility and service life of aircraft
  • Maintain the balance between safety and performance.

Professional Experience

Special Mission Installations

  • Scientific survey instruments (gravimeters, ice radar, air sampling, etc.)
  • Mapping instruments (magnetometers, infrared cameras, LIDAR, etc.)
  • Passenger and crew seats
  • Cargo interiors
  • Fire suppression systems
  • Data Acquisition (DAQ) systems
  • Isolated and special-purpose power supplies
  • Medivac stretchers
  • Oxygen systems
  • Helicopter point-to-point navigation systems
  • Helicopter External Cargo

Systems Upgrades

  • Main Battery upgrades (Ni-Cad/Lead-Acid/Lithium-Ion)
  • Electrical Distribution
  • In-seat power
  • Backup power supplies
  • Ground power receptacles
  • Nacelle/engine heaters
  • Cockpit displays
  • Radio receivers
  • Standby Instruments,
  • Electronic Flight Bags
  • VHF, UHF, HF, radar, Satcom antennas and receivers
  • Emergency Locator Transmitters

Product Manufacturing

  • Aerospace quality control standards
  • Production support
  • Tool and assembly
  • Fixture design
  • Metallic manufacturing (mill, lathe, welding, and sheet-metal)
  • Composite bonding
  • Wet layup
  • Prepreg & autoclave processing
  • Curing process management
  • Structural testing
  • Equipment calibration

Structural Repairs

  • Metallic Primary and Secondary structures
  • Composite Primary and Secondary structures
  • Primary and Secondary fatigue repair & reinforcement
  • Primary and Secondary corrosion repairs
  • Wing and fuselage skin damage repairs
  • Alternate means of compliance (AMOC) to airworthiness directives

External Modifications

  • Wing-tip pods and tail booms
  • Helicopter Cargo pods and baskets
  • Camera mounting rails and fairings
  • Helicopter suspension lines & jettison systems

Test Witnessing

  • Structural load tests (coupon, assembly, and airframe)
  • Function tests (ground and flight)
  • Flutter tests (ground and flight)
  • Diagnostic tests (troubleshooting)

Technical Specialties

  • Structural design
    • Conceptual Sizing
    • Functional Specification
    • Loads Evaluation
    • Optimization
  • Structural analysis
    • Back-of-the-Envelope Analysis
    • Detail stress analysis
    • Bruhn
    • Niu
    • McCombs
    • Flabel
  • Structural testing
    • Load Cell Installation
    • Data Acquisition
    • Deflection Measurement
    • Risk Management & Safety
  • Airworthiness certification
    • Test Witnessing
    • Test Planning
    • Test Coordination & Liaison
  • CAD
    • AutoCAD
    • Inventor
    • Solidworks
  • Analysis
    • NASTRAN
    • FEMAP
    • Simscale
    • Mathcad
  • Computer programming
    • C++
    • BASIC
    • Python

All Categories of Aircraft

  • Part 23 Fixed Wing Normal, Utility, Acrobatic, and Commuter Category
  • Part 25 Fixed Wing Transport Category
  • Part 27 Rotary Wing Normal Category
  • Part 29 Rotary Wing Transport Category

Professional Scope of Practice

Within the discipline of Mechanical Engineering: design, evaluate, test and direct the production, modification and repair of type certified aircraft, rotorcraft, and aeronautical products, that is the routine application of industry recognized codes, standards, procedures and practices using established engineering or applied science principles and methods of problem solving.

This scope of practice was developed to represent my experience and qualifications when licensed by ASET as a Professional Technologist (Engineering). The Association of Professional Engineers of Saskatchewan (AEPGS) has endorsed this scope of practice.