Tammy Reeve

President of both Airworthiness Certification Services, LLC and Patmos Engineering Services, Inc., award-winning certification specialist Tamara (Tammy) Reeve, has 36 years of experience in the Aviation industry, 28 of which as a Designated Engineering Representative (DER) of the FAA.

Tammy works as an FAA DER, independent certification consultant, and trainer.

Tammy Reeve

FAA/DER, President, Patmos Engineering Services | Airworthiness Certification Services

In addition to being awarded the esteemed title of “Fellow” from SAE International, Tammy was named one of The Most Influential Women in Aerospace and honored with the prestigious 2020 SAE International J. Cordell Breed Award for Women Leaders.

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Tammy has extensive experience working on both hardware and software across a broad array of aviation programs, including brakes, power systems, engine controls, display systems, and more. She’s worked on commercial aircraft of all sizes and types, numerous military programs, and lately she’s been on the leading edge of trends in drone delivery, air taxis, personal aircraft, and VTOL/eVTOL, as well as reuse of hardware IP, tool qualification, and model-based approaches.

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While credentialed by the FAA, Tammy has worked with clients on programs certified by nearly every other civil aviation agency (and some military ones as well) worldwide.

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Tammy has given freely of her time and experience to industry organizations, including the special committees that have developed DO-178C, DO-248C, DO-278C, and currently DO-254A. She also chaired the US Chapter of the DO-254 User Group for nearly 20 years.

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Tammy’s Awards

In 2024, Tammy was nominated to become an SAE Fellow, an honor of the highest level, bestowed only on those who have demonstrated significant achievement and contributions in the field of engineering.

In 2021, Tammy was featured in the book Flight Paths to Success, which profiles the personal journeys of 33 women who have been leaders in the Aerospace Industry.

In 2020, Tammy Reeve received the prestigious SAE International J. Cordell Breed Award for Women Leaders for the extraordinary success she achieved while running two certified women-owned companies and maintaining a well-defined, structured work-life balance with her family and community. This award recognizes women active in all sectors of the mobility industry who have achieved the best balance between their professional and personal lives.

Tammy has also received recognition for her achievements and for donating her time in support of SAE at numerous conferences and activities.

Tammy’s Project Experience and Qualifications

Tammy Reeve has been an FAA-designated engineering representative (DER) since 1998, supporting programs under numerous worldwide certification agencies. Tammy Reeve is authorized for CFR 23,25, 27,29 & 33, as well as working with many TSOs/ETSOs. See Tammy’s FAA credentials by searching in the category “DER-T” for  “Tamara Reeve” here: Designee Locator Search.

Tammy’s accomplishments include:

• Working as an embedded software design engineer for GE Aerospace and Avtech Corporation (prior to her DER certification)
• Approval of Software data items to RTCA DO-178B/C/ED-12B/C (FAA 8110-3 form approvals)
• Approval of Hardware data items to RTCA DO-254 and supporting policy (FAA 8110-3 form approvals)
• EASA Type Validation authority for Software and Airborne Electronic Hardware
• Canadian Finding Authority for Military project work for DO-254 and DO-178B/C
• Training on current FAA guidance in DO-254, DO-178B, DO-178C (delta), and ARP 4754A
• Gap Analysis: Evaluating processes and developing plans/approaches for approval by certifying bodies
• Software and hardware tool qualification development and/or evaluation
• TSO/TC/STC/PMA process review and liaison between applicants and approval authorities
• Assisting with FAA “Partnership for Safety Plans” to streamline certification activities and data transmittals
• Assisting with DO-160 Qualification Test Plan/Procedures/Results
• Experience working programs using DO-297, Integrated Modular Avionics (IMA) 
• Experience on DoD military programs under MIL-HDBK-516 (the DoD’s Airworthiness Certification Criteria handbook, using MIL-STD-818 (electromagnetic compatibility (EMC) requirements), MIL-STD-489 (requirements for the design, development, and certification of airborne electronic hardware), and MIL-STD-2157 (specification for Standard Microcircuit Drawings)
• Have worked on projects involving ISO 26262 (automotive safety standard)
• Familiarity with IEC 60601-1 (medical devices safety standard)
• DO-254 Trainer for Society of Automotive Engineers (SAE)
• Selection as a Boeing ODA unit member: CVE and DAE under BDS with secret clearance.

Her extensive experience at Boeing includes:

• Boeing FAA DER for SW and AEH (Level A full approval 23,25,27,29,33)
• 787- SW Electric Braking system.
• AEH for Valve control unit (VCU) & Cabin Air conditioning and temperature control system (CACTCS) PCU environmental control systems
• AEH Integrated Cooling System (ICS);
• Forward Cargo Air Conditioning (FCAC),
• Power Electronics Cooling System (PECS) and Low Pressure Systems (LPS);
• AEH nose wheel steering,
• AEH & SW EMCU Hilift flight controls
• AEH Inertial Navigation Radio (INR) ;
• SW SELCAL & Audio Subsystem;
• AEH CDN End system Audio Subsystem & ASIC;
• SW – Rain Removal System (RRS) windshield wiper electronic control unit (WWECU) 777 – SW and AEH Audio control system;
• 747-8F – Software and AEH for Yaw Damper/Stabilizer Trim Module;
• Flight controls 767 200/300/400 – SW Runway Awareness and Advisory (RAAS)
• 737NG – APU Software and AEH 737-8
• AEH for IMMR 737max
• SW ECU.
• AEH IMMR 737-300/500/700
• AEH Communication Management Unit Mark II
• AEH-Terminal Area wireless LAN unit CCA (TWLU)
• C-40C Interior
• SW Ball Steering Unit
• Fuel Quantity Indicator 757-200
• SW DFDR Airframe Database
• ARINC 429 Broadcast Database
• FDAMS DFDAU FMC database

Click here to see Tammy’s Resume for a deeper understanding of her background and program experience.

Tammy’s Certification Agency Experience

Tammy has worked on client projects in conjunction with the FAA, EASA, UK CAA, CAAC, CASA, Transport Canada, ANAC, and others, including military certifications.

Tammy’s Industry Contributions

• Current participant in SC-243 for DO-254A (airborne hardware design assurance).
• Ongoing work on Working Group (WG) 34 for Machine Learning and AI. Tammy is the subgroup chair for the Verification team.
• Participant on SC-205 for DO-178C, 248C, and 278C (for airborne and ground-based software assurance), and Co-Secretary of the Model-Based subgroup.
• Participant on SC-190 for DO-248B (supporting information for DO-178B)
• Tammy chaired the US Chapter of the DO-254 User Group for nearly 20 years.
  
• Tammy has participated in numerous SAE conferences, including SAE Aerotech Congress, presenting, chairing tracks, and appearing on panels.
• Tammy has written numerous articles and papers that have appeared in numerous conferences and publications