Management Team

Our management team combined with over 150 years of aviation experience, provides SOLUTIONS and customized programs to maximize the objectives of the asset owner.

Konrad Walter this 2016 celebrates his fortieth (40) year in the industry. In his early career he used his A&P license to learn the business from the ground up as a service technician for several Miami area service companies and Eastern Airlines. He progressed to management responsibilities at Greenwich Air Service and GE Engine Service. In 1998, he became a founding partner and President of Patriot Aviation. This was followed in 2002 by being founding partner and President of Complete Turbine Service. Konrad sold his interest in the company in 2010 and assisted the new owner in developing a world class, full service engine MRO organization now known as CTS Engines where he served as President and COO. He has since founded Taking Aviation Forward, LLC, as the President and CEO which has fostered several aviation related business ventures and partnerships alike, which include Aeronautical Support International, LLC (ASI), and Turbine Management Support, LLC (TMSaero). In addition, Konrad is a Past President and current member of the Board of Directors of the Greater Miami Aviation Association (GMAA). Co-Chairman of the Broward College Aviation Advisory Committee. ISTAT Member, serving many roles such as ISTAT Scholarship Foundation Committee Member and ISTAT Foundation “Florida” Ambassador.

Jim Holmes started his career in Aviation at a young age, and joined the Royal Airforce at 17 years of age. He spent the next 3 years at the number one (#1) school of technical training graduating with qualifications in Aerospace Engineering. For the next 7 years Jim held a number of positions within F4 Phantom operations and maintenance, finishing his Airforce career as part of the management team of the Rolls-Royce Spey engine overhaul shop at RAF Woodhall Spa, made famous by the Second World War bomber squadron, “The Dambusters”. During his time with Rolls-Royce in Derby, Jim held several increasingly senior management positions in repair Engineering, Overhaul support, Invoice cost reduction Team and finally in the Derby based MRO. Jim continued his career with Rolls-Royce climbing his way through management as; Traveling Service Representative with those such as; Boeing production support, Sydney Australia for Qantas B747-400 aircraft, and supporting British Airways fleets of B747-400/B757/B767 aircraft. In 1998 Jim moved back to Rolls-Royce headquarters in Derby to look after Cathay Pacific Airways, he then moved into a management role to look after the newly formed Texas Aero Engine Services in Texas, better known as TAESL. Jim was responsible for the interface between the overhaul shop and the Rolls-Royce headquarters in Derby. In 2007 Jim moved to Texas to take a position in Customer Business in TAESL where over the next 9 years rose to eventually Head up the Technical Services group which comprised of Service Engineering, Customer Business and the internal shop order team. After TAESL closed at the end of 2015 Jim spent a brief period with other aviation related part supply and Turbine Engine MRO groups, before joining TMSaero-Turbine Management Solutions, LLC as a managing partner. Jim oversees engine fleet management, engineering, workscope development, shop visit management, DER development, etc.

John Costello has been in the aviation industry for over 50 years. He joined Aer Lingus in 1964 as an engineering apprentice. In 1969, he attained city and guilds in Aeronautical Engineering. He went on to attain A&P licenses plus JT3D, JT8D, JT9D, and RR SPEY in the 1970s. From that point, John was an engine shop foreman, powerplant and test. In the 1980s , he transferred to Airmotive Ireland where he was a manager engine test/ accessories. From 1986, John was a salesman – SNR VP Sales/ Marketing at AGES Group, which became Volvo Aero which in turn became VAS Aero Services. Since 2011, he has retired and is a partner at Cloud Investment Partners LLLP, Aeronautical Support Inernational, LLC, and TMSaero, LLC. As a managing member of TMSaero, John oversees and assists with business development, engine fleet management, engineering, workscope development, shop visit management, etc.


Amber Holmes started her aviation career 10 years ago with American Airlines having previously held positions in schooling and accounting. Amber worked with American Airlines at the Alliance Fort Worth aircraft maintenance facility in aircraft maintenance planning and reporting liaising between the maintenance planning and records groups and the maintenance docks. Amber then moved to Texas Aero Engine Services LLC “TAESL”, a joint venture between American Airlines and Rolls-Royce where she became a key member of the Customer Business team. She was responsible for Customer relationship management with several different customers and organized and supervised all Customer visits to the shop, she held a key position within the marketing of TAESL and was solely responsible for the overhaul shops attendance at the Americas MRO for several years.Amber then took on several increasingly important roles with the introduction of field trip support where she organized the field trip from front to back, Customer liaison, mechanic selection, travel and was then the “Home” support whilst the field trip took place. She also took on a role within the internal shop order team preparing technical instructions for engine overhaul to the shop floor. Moving back into the centralized main headquarters of American Airlines at DFW in 2014 she became part of the Corporate Real estate team reporting directly to the VP of corporate real estate and having several direct reports. She played a large role in the integration of US Airways and American Airlines and the roll out of the new American Airlines identity in airports worldwide. Amber is a managing member of TMSaero overseeing customer relations, engine records accounting, fleet management reporting, business development, etc.


George BoryanGeorge Boryan’s career entails several aspects of not only aviation, but also the legal practice sector where he served as a practicing Trial Attorney and law-firm partner for thirteen years prior to joining American Airlines in 1989. During his 20 plus years with American Airlines, George took on several leading roles regarding Aircraft and Engine operations. This included Production Supervisor for 767/757 Heavy Check Operations. Where he was responsible and positively impacted performance of the operation, providing 100% on-time delivery. From there George took over as Production Supervisor for Rolls-Royce RB211-535 engines at AFW, Fort Worth, Texas. While in this position he managed the in-processing, evaluation, and overhaul process of the RB211 sub-assembly and build-line shops. George later then took on the title of Production Supervisor for the Aircraft Line Maintenance Operations of over 150 daily departures at American’s DFW base. Which later lead him to Production Manager Aircraft Line Maintenance Operations at JFK, New York and DFW, Dallas airports. In this position he managed performance of Supervisory and Union personnel in daily accomplishment of terminal and hangar Maintenance Operations. He furthermore managed all operations resources while assuring maintenance was accomplished in accordance with Company and FAA requirements. Following this time George went on to being the Customer Business Manager Civil Large Engines – Alliance, Fort Worth, Texas where he managed customers’ Rolls-Royce RB211-535E4 and Trent 800 engines during overhaul at Texas Aero Engine Services Limited, including managing business relationship, work scopes, budget, review of technical data, and material sourcing.

George’s education includes Juris Doctorate at the University Of Santa Clara School Of Law. Bachelors of Arts Political Science from San Jose State University.

Licenses and Training include; Airframe & Powerplant FAA License. Fleet qualified and/or experienced on the following aircraft: B-777, B-767, B-757, B-737, B-727, MD-80, A-300 and F-100. Also fleet qualified on the following power plants: RB211-535, Trent 800 and CF6, and others not listed.

George is TMSaero’s Engineering and Business Development Advisor, overseeing and assisting with business development, engine fleet management, engineering, workscope development, shop visit management, etc.

Kurt WalterKurt Walter started his career in 1970 when he attended George T. Baker Aviation (GTB) School in Miami Fl.  He graduated from “GTB” in 1973 and received his A&P license. During his over 45 year aviation career Kurt has worked many different aircraft types from DC3’s to B747’s, and engine OEM’s such as GE, Rolls Royce, and Pratt & Whitney. In the beginning, Kurt worked for an Engine Overhaul company and several FBO’s, as well as Lead Mechanic for Air Florida out of Miami International Airport. He went on to work for Piedmont Airlines in 1985 and in 1988 started his career with UPS as a B727 Maintenance training instructor. Kurt taught, developed training curriculums and maintenance programs for both Piedmont and UPS. During Kurt’s career at UPS he held multiple positions as Supervisor and Manager in Aircraft Line Maintenance, Maintenance training, Finance, and AMC for nearly 27 years. He was also responsible for the B757, A300 and MD11 phase in by leading the transition teams for UPS operations. Kurt holds a Bachelor’s degree in Aeronautical Science, as well as dual Master’s Degree in Aeronautical Science and Space Operations from Embry Riddle Aeronautical University.

Kurt is TMSaero’s Engineering and Process Development Advisor, overseeing and assisting with business development, engine and aircraft fleet management, engineering, workscope development, shop visit management, etc.

_mg_4523-e1Jim McMillen’s 50+ year career in aviation has covered all aspects of jet propulsion from design, development, operation, and maintenance to buy, sell, and lease. He has worked with 3 different engine manufacturers (Rolls Royce, GE and CFM International), 3 different airlines (Eastern, National, and Pan Am) and he was President of the JT8D overhaul facility, AeroThrust, for 20 years. In addition, since his retirement from AeroThrust he has served as Chairman of TES in Wales and CTS in Florida guiding those companies to successful transitions to new ownership through improved performance.

Jim has a B.S In Aeronautical Engineering from Penn State and an M.S. in Flight Transportation Management from M.I.T. He is the recipient of the Greater Miami Aviation Association’s prestigious Wright Brothers Memorial Award and is Past President of ISTAT.

Jim’s vast experience and expertise provides an additional dimension to TMS Aero’s offerings to include business management advisory services.

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