Modified Condition/Decision Coverage is the most demanding structural coverage criterion in DO-178C. We break down what it requires, how to instrument for it, and common mistakes teams make that cause SOI audit failures.
The Plan for Software Aspects of Certification is often the first document a DER will challenge. We walk through the twelve most common gaps we see in PSACs submitted for Part 23 and Part 25 programs.
DO-178C independence requirements are often misunderstood by startups entering certification for the first time. This guide explains what organisational independence actually requires and how to structure it cost-effectively.
Not every tool used in a DO-178C program needs formal qualification. We explain the criteria for TQL-1 through TQL-5, and how to plan tool qualification without derailing your schedule.
Stage of Involvement audits are the critical gates in any DO-178C program. This guide details what reviewers look for at SOI #1 through #4, and how to prepare packages that close with zero findings.