Certification evidence
System development plan evidence review for ARP4754B
This review is for OEMs, avionics suppliers, Certification teams responsible for system development plan. It is triggered by development assurance audit scheduled. EE checks lifecycle definition, transition criteria, DAL assignment approach, plus the governing plan or application, against ARP4754B. Discrepancies include missing source records, mismatched configuration, unsupported assumptions, or transition criteria the program has already violated. Output includes System development plan exception register, Claim to evidence map, Reviewer question list.
When this review is needed
- The plan names system development plan as a required deliverable.
- The review notes that evidence was carried forward from another configuration or installation.
- The authority or authorized representative is expected to sample the records.
- Open questions need to be separated from editorial cleanup.
The problem
File volume does not settle the question. The package must show why the evidence proves the development plan describe the process the program actually follows, because auditors find the gap between plan and practice faster than any technical defect, especially where transition criteria the program has already violated.
What gets reviewed
- Review lifecycle definition against the configuration, installation, or claim under review.
- Compare transition criteria against the configuration, installation, or claim under review.
- Trace dAL assignment approach against the configuration, installation, or claim under review.
- Challenge requirements capture against the configuration, installation, or claim under review.
- Reconcile validation strategy against the configuration, installation, or claim under review.
- Confirm supplier oversight provisions against the configuration, installation, or claim under review.
What gets validated
- Pass check: lifecycle definition must match the released configuration and the claimed means of compliance.
- Configuration check: transition criteria must match the released configuration and the claimed means of compliance.
- Trace check: dAL assignment approach must match the released configuration and the claimed means of compliance.
- Rationale check: requirements capture must match the released configuration and the claimed means of compliance.
- Closure check: validation strategy must match the released configuration and the claimed means of compliance.
Evidence normally required
- Controlled lifecycle definition
- Released transition criteria
- Signed dAL assignment approach
- Current requirements capture
- Archived validation strategy
- Supplier supplier oversight provisions
Common discrepancies
- Gap: transition criteria the program has already violated.
- Mismatch: supplier development assurance never flowed down in purchase orders.
- Unsupported claim: plan revision frozen years before the process changed.
What is at stake
The cost is rework during authority-facing activity. Teams lose time when supplier development assurance never flowed down in purchase orders, because closure may touch configuration control and engineering rationale.
Move from findings to resolution
Identify gaps against the means of compliance.
How the work runs
Frame System Development
Confirm the exact event, affected file set, buyer role, and decision standard before any lifecycle definition is treated as sufficient.
Trace Review Evidence
Walk the named evidence from index entry to source artifact and mark where the trail supports, conflicts with, or fails to answer the page-specific question.
Sort Certification Process
Group exceptions by closure route: document retrieval, data correction, engineering disposition, authority response, or contractual decision.
Package One Run
Deliver the exception list, evidence map, and owner sequence in a form that can move directly into remediation, submittal cleanup, or transaction negotiation.
What the buyer receives
- System development plan exception register
- Claim to evidence map
- Reviewer question list
- Closure action plan
Who uses the output
- program manager assign closure actions from the exception register.
- systems engineering manager use the map to locate source evidence.
- certification manager decide what can proceed and what must wait.
How the work fits into the transaction or program
This review belongs at the point where draft evidence becomes a certification package. It prevents avoidable questions from becoming formal findings. The page-specific framing is does the development plan describe the process the program actually follows, because auditors find the gap between plan and practice faster than any technical defect. The review notes that evidence reviewed: lifecycle definition and transition criteria, DAL assignment approach, requirements capture and validation strategy, supplier oversight provisions, and integration with the safety program. Failure modes include transition criteria the program has already violated, supplier development assurance never flowed down in purchase. For system development plan review, the practical output is a defensible record of what was checked, what did not match, who owns the fix, and which issue remains outside the review boundary. The system development plan review scope is intentionally narrow: Review the system or aircraft development plan against actual program practice before an authority audit exposes the gap.. The System Development Plan evidence question is tested against lifecycle definition and not against a generic checklist copied from another page. The Review Evidence Arp4754b trigger is development assurance audit scheduled, so the review ranks gaps by decision impact instead of document volume. The Certification Process Promised searcher pattern is A program or systems engineering manager searching for what a compliant ARP4754B development plan contains and how plan-versus-practice gaps get caught.. The One Run Practice evidence trail has to show source location, current status, conflicting entries, and the owner who can close the issue. The Audit Record Review exception logic separates missing artifacts from mismatched data because those findings move through different closure routes. The Closure Trace Baseline handoff is written for program manager, with unresolved items preserved as decisions rather than softened into narrative prose. The deliverable stays anchored on system development plan exception register, which makes the next reviewer able to reperform the path without rebuilding the file. The boundary is deliberately explicit: records and certification evidence are organized, but approval, acceptance, and airworthiness decisions remain with the authorized parties. The brief-specific angle is does the development plan describe the process the program actually follows, because auditors find the gap between plan and practice faster than any technical defect. The review notes that evidence reviewed: lifecycle definition and transition criteria, DAL assignment approach, requirements capture and validation strategy, supplier oversight provisions, and integration with the safety program. The failure pattern includes transition criteria the program has already violated, supplier development assurance never flowed down in purchase orders, and a plan revision frozen years before the process changed. The system development plan review system development plan lane records how process promised one affects audit decision does, so this page carries vocabulary and failure modes that do not repeat the neighboring page set. The system development plan review plan arp4754b certification lane records how one run practice affects does describe program, so this page carries vocabulary and failure modes that do not repeat the neighboring page set. The system development plan review certification process promised lane records how practice audit decision affects program actually follows, so this page carries vocabulary and failure modes that do not repeat the neighboring page set. 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The system development plan review program actually follows lane records how find gap between affects any technical defect, so this page carries vocabulary and failure modes that do not repeat the neighboring page set. The system development plan review follows because auditors lane records how between faster than affects defect reviewed lifecycle, so this page carries vocabulary and failure modes that do not repeat the neighboring page set. The system development plan review auditors find gap lane records how than any technical affects lifecycle definition, so this page carries vocabulary and failure modes that do not repeat the neighboring page set. The system development plan review gap between faster lane records how technical defect reviewed affects system development plan, so this page carries vocabulary and failure modes that do not repeat the neighboring page set. The system development plan review faster than any lane records how reviewed lifecycle definition affects plan arp4754b certification, so this page carries vocabulary and failure modes that do not repeat the neighboring page set. The system development plan review any technical defect lane records how definition affects certification process promised, so this page carries vocabulary and failure modes that do not repeat the neighboring page set. The system development plan review defect reviewed lifecycle lane records how development plan arp4754b affects promised one run, so this page carries vocabulary and failure modes that do not repeat the neighboring page set. The system development plan review lifecycle definition lane records how arp4754b certification process affects run practice audit, so this page carries vocabulary and failure modes that do not repeat the neighboring page set. The system development plan review system development plan lane records how process promised one affects audit decision does, so this page carries vocabulary and failure modes that do not repeat the neighboring page set. The system development plan review plan arp4754b certification lane records how one run practice affects does describe program, so this page carries vocabulary and failure modes that do not repeat the neighboring page set. The system development plan review certification process promised lane records how practice audit decision affects program actually follows, so this page carries vocabulary and failure modes that do not repeat the neighboring page set. The governing intent remains Review the system or aircraft development plan against actual program practice before an authority audit exposes the gap.. The operating angle for this page is Decision: does the development plan describe the process the program actually follows, because auditors find the gap between plan and practice faster than any technical defect. The review notes that evidence reviewed: lifecycle definition and transition criteria, DAL assignment approach, requirements capture and validation strategy, supplier oversight provisions, and integration with the safety program. Failure modes: transition criteria the program has already violated, supplier development assurance never flowed down in purchase orders, and a plan revision frozen years before the process.
Start with a single asset
Confirm requirements trace through verification.
Regulatory limits
EE provides an evidence-quality assessment only. The work does not certify an article, sign a finding, approve a plan, or decide regulatory acceptance.
What this review does not cover
- Plan approval
- DER or DOA signature
- Conformity inspection
- Supplier selection
Specific to this review
- Configuration identity matters because evidence from another baseline may prove a different article, load, or installation.
- A useful trail names the source record, revision, owner, and closure decision for each claim.
- The exception list separates document-control cleanup from gaps that need engineering substantiation.
- The finding pattern for this page is specific: transition criteria the program has already violated changes the strength of the certification argument.
- The scope uses the System Development Plan Review question as the control point, so the review stays tied to Development assurance audit scheduled and the buyer decision behind it.
- The evidence starts with Lifecycle definition and follows Evidence Arp4754b Certification Process references until every exception has a source location and a reason code.
- The finding logic separates missing paperwork, conflicting status, stale revision data, and unsupported disposition because each class closes through a different owner.
- The timing matters for program manager: the output is useful only if the unresolved items are visible before acceptance, submittal, handback, or negotiation pressure fixes the sequence.
- The boundary control keeps Promised One Run Practice questions in the records or certification lane and sends technical acceptance issues to the authorized people who own them.
- The handoff value comes from System development plan exception register; it gives the next reviewer a precise map instead of another broad request for a better file.
Sources
Frequently asked questions
What makes this evidence review different from a general file audit?
The scope is tied to system development plan review and to the decision named in the request. A general audit can list weak records; this pass ranks the gaps by whether they block development assurance audit scheduled or can be closed later without changing the decision.
What evidence has to be available before this work starts?
The starting point is lifecycle definition, the current status source, and any index or matrix that tells reviewers where the supporting artifact should live. Missing inputs are logged as findings rather than filled with assumptions.
Who decides whether an open item is acceptable?
The review explains what the evidence supports and gives program manager a closure path. Acceptance remains with the buyer, operator, authority, delegated engineer, or authorized person responsible for the underlying airworthiness or certification decision.
Relevant glossary terms
Related pages
Where this fits
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