Aerospace Engineering • Certification • Airworthiness

Engineering confidence into mission-critical systems.

Dunagan Engineering Services, Inc. supports aerospace and defense organizations with systems engineering, safety assessment, software and airborne electronic hardware assurance, multicore processor certification, verification, and compliance planning.

DESI metallic Boeing blue logo with Regnamus Caelum motto
FAA / USAFCertification-focused support
DAL / CSILAssurance planning and evidence
MCPInterference and resource analysis
LifecyclePlanning through approval
What DESI Delivers

Practical engineering support built for review, verification, and approval.

Our work products are structured for program execution and certification review—not just analysis. DESI helps teams translate requirements into traceable plans, evidence, and closure criteria.

01

Airworthiness & Certification

Certification strategies, compliance matrices, means of compliance, review readiness, findings management, and approval support.

02

Multicore Processor Assurance

Resource usage, timing, interference, shared-resource, interrupt, communication, and verification analysis for complex MCP architectures.

03

Software & AEH Assurance

Lifecycle planning and compliance support aligned with DO-178C, DO-254, DO-331, and related FAA and military guidance.

04

Systems & Safety Engineering

Requirements, architecture, hazard analysis, assurance allocation, verification planning, and system integration support.

05

Verification & Test

Test strategy, objective coverage, robustness, stress, timing, fault injection, resource monitoring, and evidence integration.

06

Program Management Artifacts

Certification-grade plans, checklists, dashboards, workbooks, review packages, schedules, and closure records.

Standards Alignment

Designed around the objectives your reviewers expect to see.

  • MIL-HDBK-516C airworthiness criteria
  • FAA AC 20-193 multicore processor guidance
  • DO-178C software lifecycle assurance
  • DO-254 airborne electronic hardware assurance
  • DO-331 model-based development considerations
  • USAF AC-17-01 and AA-22-01 program expectations
  • MIL-STD-882 system safety integration

Typical DESI Engagement

Assess

Evaluate architecture, certification basis, gaps, risks, and available evidence.

Plan

Define objectives, activities, artifacts, responsibilities, reviews, and closure criteria.

Execute

Support analysis, testing, documentation, coordination, and evidence development.

Close

Resolve findings, establish compliance, and prepare approval-ready packages.

Regnamus Caelum

Technical depth. Certification discipline. Mission focus.

DESI provides senior-level engineering support for organizations developing, integrating, modifying, or certifying complex airborne systems.

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