Part 23 certification basis support for navigation equipment

When this review is needed

• navigation equipment is moving toward submittal and Part 23 evidence needs a clear map.
• A finding or internal review asks how normal-category aircraft certification-basis mapping are shown for the product.
• The product configuration changed and the Part 23 evidence has not been reconciled.

The problem

Part 23 evidence can become scattered across plans, reports, traces, and configuration records. For navigation equipment, the weak point is usually connecting those records to sensor inputs, database currency, software level, and MOPS alignment.

What gets reviewed

• Part 23 certification basis objectives or expectations relevant to navigation equipment
• Evidence covering sensor inputs, database currency, software level, and MOPS alignment
• Certification basis, compliance matrix, and current document revisions
• Configuration assumptions that affect the standard's application
• Open gaps where the evidence does not support the stated claim

What gets validated

• normal-category aircraft certification-basis mapping are mapped to evidence rather than left as a standard reference
• navigation equipment assumptions are stated in the evidence package
• Cited reports, traces, and plans match the current configuration
• Open gaps are tied to evidence owners and closure actions
• The map distinguishes applicable objectives from excluded or out-of-scope items

Evidence normally required

• Part 23 compliance or evidence matrix
• navigation equipment certification evidence package
• Certification basis and means-of-compliance plan
• Configuration baseline and current revisions

Common discrepancies

• Part 23 is cited without mapping the relevant evidence
• navigation equipment assumptions are missing from the qualification or lifecycle data
• Evidence revisions changed after the matrix was built
• A finding asks for traceability that the package does not show

What is at stake

If the standards map is unclear, reviewers ask for explanations that should already be in the package. That creates avoidable cycles across certification, engineering, and test teams.

How the work runs

What the buyer receives

• A Part 23 evidence map for navigation equipment
• A gap list tied to the certification basis and product configuration
• A closure sequence for missing or stale evidence

Who uses the output

• Certification leads preparing a standards-based submittal
• Engineering and test teams closing evidence gaps
• Program management tracking review risk

How the work fits into the transaction or program

The support fits inside a TSO, STC, ETSO, major-change, or installation approval workstream where standards evidence must be understandable to a reviewer outside the design team.

Regulatory limits

The work maps and reviews applicant evidence. It does not certify compliance, issue approvals, or act for a regulator.

What this review does not cover

• Acting as the authority or authorized finding signatory
• Running qualification tests unless separately scoped
• Writing the product design data from scratch

Specific to this review

• Part 23 support is useful when it states how the standard applies to navigation equipment, not only that the standard is listed.
• sensor inputs, database currency, software level, and MOPS alignment can change which parts of Part 23 evidence receive the closest review.
• A standards map reduces review cycles because it ties each claim to current evidence and configuration assumptions.
• A part 23 certification basis support for navigation equipment should make the evidence path visible enough for compliance matrix owner and continued-airworthiness author to defend it without relying on meeting memory. The review should separate continued-airworthiness task link from conformity article identity, then show where the team must tie the claim to the certification basis or separate open technical disagreement. The reviewer question is whether the basis requirement is fully represented, and the deliverable should read as a verification coverage view.
• The strongest package names the owner for finding disposition, test-report boundary, and requirements baseline. If the current data cannot answer which verification record proves the objective, the closure plan should assign the evidence owner before the evidence is used in a formal response. That keeps finding-response owner from carrying an open technical question as if it were only a document-control issue.
• For this certification page, the useful output is a document revision cross-check that tells document-control lead how a design change affected the submitted data. It should state when to align the configuration baseline, when to update the compliance matrix, and how whether the finding response can be read without meeting history affects the claim. That makes the package easier to review across certification, engineering, test, and quality without changing the applicant's role.
• The page is intentionally scoped around part 23 certification basis support for navigation equipment, so the evidence should be checked for conformity article identity before submittal. A good final packet leaves a continued-airworthiness addendum and a test evidence boundary note, with enough context to answer which document revision should be cited and enough discipline to avoid treating an unsupported claim as closed.
• part 23 certification basis support for navigation equipment should give compliance matrix owner a path from Part 23 and DO-160G and DO-178C to part 23 evidence map, not only a folder of supporting files. The review checks change-impact statement, answers whether a delegated reviewer would see the same chain, and leaves a finding response attachment before part 23 evidence mapping becomes a formal package.
• For part 23 evidence mapping, the evidence problem usually appears where finding-response owner and document-control lead use different baselines. part 23 certification basis support for navigation equipment should compare objective-evidence currency with configuration-controlled revision and decide whether to confirm the qualification category before citing the record.
• FAA and EASA review of part 23 certification basis support for navigation equipment needs closure language that a delegated or authority reviewer can follow. The package should state whether quality records support the submitted article, attach a standards applicability note, and keep mark the residual action item separate from unresolved engineering judgment.
• The deciding control for part 23 certification basis support for navigation equipment is whether part 23 evidence map still matches the submitted configuration. certification lead should test installation assumption, record which claim the document supports, and use a product-context evidence brief when a reference is stale or incomplete.
• Part 23 and DO-160G and DO-178C evidence can look complete while the claim remains unsupported. For part 23 certification basis support for navigation equipment, the review isolates software level objective, asks who owns the next closure action, and turns the answer into a document revision cross-check instead of another meeting action item.
• A useful applicant-side package for part 23 certification basis support for navigation equipment shows where certification, engineering, test, and quality agree. It assigns hardware assurance owner to safety assessment feedback, names when to separate open technical disagreement, and preserves a test evidence boundary note for later review.
• Before part 23 evidence mapping advances, part 23 certification basis support for navigation equipment should separate missing objective evidence from disagreement about the claim. The reviewer checks conformity article identity, answers which verification record proves the objective, and avoids using align the configuration baseline as a substitute for evidence.
• part 23 certification basis support for navigation equipment is strong when the closure record can be read without meeting history. The packet should connect conformity coordinator to part 23 evidence map, document installation assumption, and leave a submittal readiness extract that explains why the item is ready, blocked, or out of scope.
• For FAA and EASA, the practical test is whether a reviewer can see which claim the document supports from the record itself. part 23 certification basis support for navigation equipment should tie software level objective to Part 23 and DO-160G and DO-178C, then use refresh the cited revision only after the supporting revision is clear.
• The final check for part 23 certification basis support for navigation equipment measures reviewability instead of page count: a document revision cross-check should show who owns the next closure action, assign systems engineer, and keep safety assessment feedback aligned with the current article, installation, or change baseline.

Sources

Frequently asked questions

Relevant glossary terms

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