DER Delegations
FAA designee authority covering 14 CFR Part 23, Part 25, Part 27, and Part 29.
- Chart C2
- System and Equipment
- Chart G
- Flight Analyst
- Safety
- Safety analysis approval
- EWIS
- Electrical Wiring Interconnection Systems
- DO-160G
- Environmental qualification approval
DER designation renewed through August 31, 2027.
Services
Certification support for aircraft manufacturers, MROs, completion centers, and STC / PMA shops — anywhere in the United States.
- DER certification consulting & approvals
- Avionics & electrical systems integration
- Cockpit displays & surveillance systems
- Safety analysis & EWIS compliance
- Environmental qualification (DO-160G)
- STC, PMA & alteration support
Experience
Four decades in avionics and aircraft certification — on the industry side and inside the FAA.
1988 – 1997
Boeing — Company DER and Consultant DER
1997 – 2016
FAA — Certification Project Manager, Seattle Aircraft Certification Office
2016 – Present
JGY Aerospace LLC — Consultant DER
Contact
Jay G. Yi
Designated Engineering Representative · Pooler, Georgia