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Elvis Cepus
Dr. Elvis Cepuš

Dr. Cepuš joined R.J. Waldron & Co. in 2012 after 7 years of experience in general failure analysis. He has conducted approximately 500 investigations spanning many fields - including aviation. He brings a strong academic background in mechanical engineering, metals and materials engineering (metallurgy) and composite materials, design, fracture mechanics, fatigue analysis, and computer simulation/modeling. His considerable multi-disciplinary background is a valuable tool-set in pursuit of root cause determination. He has received specialized training from the Southern California Safety Institute and Lehigh University, among others.


  • Society for the Advancement of Material and Process Engineering (SAMPE), since 2000
  • Company Membership with American Society for Metals (ASM) International, since August 2005
  • Association of Professional Engineers and Geoscientists of British Columbia (APEGBC), License No. 32605, 2008
  • International Society of Air Safety Investigators (ISASI), since 2010
  • Canadian Society of Air Safety Investigators (ISASI), since 2010
  • Helicopter Association of Canada (HAC), since 2012


  • 2003 - Doctor of Philosophy, Metals and Materials Engineering, University of British Columbia
  • 1995 - Master of Science in Mechanical Engineering, University of Manitoba
  • 1992 - Bachelor of Science in Mechanical Engineering, University of Manitoba
  • In addition to the above several aviation and materials related courses have been completed
Alec Moffat
Alec Moffat

Alec is the President and Director of Investigations with RJ Waldron. He has conducted over 750 aviation accidents, incidents, and aircraft system failures worldwide. Investigations have ranged from full on-site investigations, accident reconstruction, engine failures, drive-train failures, systems failures such as hydraulics, pneumatics, fuel controls (hydromechanical and FADEC), electrical and avionics failures as well as detailed laboratory examinations on specific failed components. With the variety of investigations Alec has been involved with, and his background in aviation maintenance and troubleshooting of complex aircraft systems, Alec is able to provide independent expert services and failure analysis for all types of investigations both large and small.

Alec is also a part-time instructor with the Southern California Safety Institute (SCSI) specializing in the Accident Investigation Course, Helicopter Accident Investigation, Gas Turbine investigation, and the Aircraft Fire and Explosion Course. Alec volunteers his time with the ISASI Reachout Program.

Alec has conducted engine failure investigations on a wide range of piston and turbine powered engines including the CFM56 series, JT8 series, CF6, PW4000, Allison C20 and C30, PT6A series, among others. A multitude of these engine investigations included investigation of the engine accessories such as fuel controls, fuel pumps, propeller governor and feathering systems etc.


  • Investigator; Appointed by the Chairman of the Transportation Safety Board of Canada by the authority of the CTAISB act (2002-2006)
  • Full member of the International Society of Air Safety Investigators (ISASI)
  • Aircraft Maintenance Engineer License, valid for category E – all aircraft, and endorsed for Boeing 737-200, -300 and -500, Airbus A319, A320 and A321


  • 1993 - British Columbia Institute of Technology, Graduated Aircraft Maintenance Engineer, Avionics Diploma
  • 2002 - Aircraft accident investigation course, University of Southern California
  • 2003 - Integrated Safety Investigation Methodology and Human Factors in Investigations, Transportation Safety Board of Canada
  • 2004 - Rotorcraft accident investigation, United States Transportation Safety Institute
  • 2006 - Currently pursuing fixed wing private pilots license
Sepehr Gerami
Sepehr Gerami

Sepehr Gerami joined RJ Waldron & Co. in 2017 after 6 years in consulting, where he focused on failure analysis, metallurgy and welding, and weld inspection. He has extensive experience working in a wide range of industries including construction and infrastructure, marine, defense, transportation, power generation, oil and gas, and renewable energies, which he has now brought to the forensic field. Since joining RJ Waldron & Co., Sepehr has carried out or participated in both aviation and non-aviation investigations including water escapes, fire/smoke incidents, and machinery and structural failures.


  • Professional Engineer (PEng) - British Columbia (APEG-BC)
  • Canadian Welding Bureau Approved Welding Engineer
  • CSA W178.2 Certified Welding Inspector


  • 2007 - University of British Columbia - Bachelor of Applied Science in Materials Engineering
  • 2010 - University of British Columbia - Master of Applied Science in Materials Engineering
  • In addition to the above, several materials/metallurgy, welding, and fracture mechanics courses have been completed.
Nigel Waterhouse
Nigel Waterhouse

Nigel Waterhouse joined R.J. Waldron & Co. in 2023 after over 30 years of experience in the aviation business, covering aircraft maintenance, design, certification, flight test, manufacturing, and expert witness services to various international courts. Working as an international consultant to the aviation industry, Nigel approves the designs of aircraft modifications and repairs under the delegated authority of Transport Canada and EASA.

In 1987, Nigel enrolled at Brunel College, Bristol, in the United Kingdom, where he earned his Aircraft Maintenance Engineer’s License from the U.K. Civil Aviation Authority. Then, in 1996, he graduated from England’s University of Lincoln with an honors degree in Aeronautical Engineering. Nigel decided to relocate to Canada in 1998 and started working in the aeronautical design and certification business where he remains today.

Nigel is also a licensed private pilot.