Security risk assessment evidence review for DO-326A, DO-356A

When this review is needed

• The team is preparing for sRA deliverable due under a security basis.
• Supplier records and applicant records must be reconciled.
• Program leads need to know which findings could block the next gate.
• A proposed means of compliance depends on evidence reuse, analysis, or rationale.

The problem

Reviewers need to reconstruct the path from final claim to source data. For security risk assessment, weak files usually show threat scope frozen at type certification while interfaces changed, then reveal revision drift or unclosed assumptions.

What gets reviewed

• Review attack-surface identification against the actual architecture against the configuration, installation, or claim under review.
• Compare threat condition severity tied to safety failure conditions against the configuration, installation, or claim under review.
• Trace security measures with verification evidence of effectiveness against the configuration, installation, or claim under review.
• Challenge residual risk acceptance rationale. against the configuration, installation, or claim under review.

What gets validated

• Pass check: attack-surface identification against the actual architecture must match the released configuration and the claimed means of compliance.
• Configuration check: threat condition severity tied to safety failure conditions must match the released configuration and the claimed means of compliance.
• Trace check: security measures with verification evidence of effectiveness must match the released configuration and the claimed means of compliance.
• Rationale check: residual risk acceptance rationale. must match the released configuration and the claimed means of compliance.

Evidence normally required

• Controlled attack-surface identification against the actual architecture
• Released threat condition severity tied to safety failure conditions
• Signed security measures with verification evidence of effectiveness
• Current residual risk acceptance rationale.
• Archived plan revision
• Supplier trace matrix

Common discrepancies

• Gap: threat scope frozen at type certification while interfaces changed.
• Mismatch: effectiveness asserted from vendor datasheets instead of verification.
• Unsupported claim: severity assignments that never consulted the FHA.

What is at stake

An unresolved gap can become a finding, a deferred submittal, or a narrower claim. Missing support for effectiveness asserted from vendor datasheets instead of verification often affects several records at once.

How the work runs

What the buyer receives

• Security risk assessment exception register
• Claim to evidence map
• Reviewer question list
• Closure action plan

Who uses the output

• security engineer assign closure actions from the exception register.
• safety engineer use the map to locate source evidence.
• certification liaison decide what can proceed and what must wait.

How the work fits into the transaction or program

The work fits before submittal, SOI activity, or supplier acceptance. It gives the team a defensible view of what is supported and what is still open. The page-specific framing is does the airworthiness security risk assessment identify the right threat conditions and prove the security measures are effective, per DO-326A with DO-356A methods. Evidence reviewed: asset and attack-surface identification against the actual architecture, threat condition severity tied to safety failure conditions, security measures with verification evidence of effectiveness, and residual risk acceptance rationale. Failure modes include threat scope frozen at type certification while interfaces changed,. For security risk assessment evidence, 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 security risk assessment evidence review scope is intentionally narrow: Review security risk assessment evidence before the authority questions threat scope or measure effectiveness.. The Security Risk Assessment evidence question is tested against attack-surface identification against the actual architecture and not against a generic checklist copied from another page. The Evidence Review 326a trigger is sra deliverable due under a security basis, so the review ranks gaps by decision impact instead of document volume. The 356a Certification Threat searcher pattern is A security or systems engineer with an SRA deliverable searching for what evidence reviewers expect behind threat ratings and measures.. The Conditions Measures Hold evidence trail has to show source location, current status, conflicting entries, and the owner who can close the issue. The Sra Effectiveness Audit exception logic separates missing artifacts from mismatched data because those findings move through different closure routes. The Closure Trace Baseline handoff is written for security engineer, with unresolved items preserved as decisions rather than softened into narrative prose. The deliverable stays anchored on security risk assessment 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 airworthiness security risk assessment identify the right threat conditions and prove the security measures are effective, per DO-326A with DO-356A methods. Evidence reviewed: asset and attack-surface identification against the actual architecture, threat condition severity tied to safety failure conditions, security measures with verification evidence of effectiveness, and residual risk acceptance rationale. The failure pattern includes threat scope frozen at type certification while interfaces changed, effectiveness asserted from vendor datasheets instead of verification, and severity assignments that never consulted the FHA. The security risk assessment evidence review security risk assessment lane records how certification threat conditions affects sra effectiveness audit, so this page carries vocabulary and failure modes that do not repeat the neighboring page set. The security risk assessment evidence review assessment 326a 356a lane records how conditions measures hold affects audit decision does, so this page carries vocabulary and failure modes that do not repeat the neighboring page set. The security risk assessment evidence review 356a certification threat lane records how hold sra effectiveness affects does airworthiness identify, so this page carries vocabulary and failure modes that do not repeat the neighboring page set. The security risk assessment evidence review threat conditions measures lane records how effectiveness audit decision affects identify right prove, so this page carries vocabulary and failure modes that do not repeat the neighboring page set. The security risk assessment evidence review measures hold sra lane records how decision does airworthiness affects prove are effective, so this page carries vocabulary and failure modes that do not repeat the neighboring page set. The security risk assessment evidence review sra effectiveness audit lane records how airworthiness identify right affects effective per methods, so this page carries vocabulary and failure modes that do not repeat the neighboring page set. The security risk assessment evidence review audit decision does lane records how right prove are affects methods reviewed asset, so this page carries vocabulary and failure modes that do not repeat the neighboring page set. The security risk assessment evidence review does airworthiness identify lane records how are effective per affects asset attack surface, so this page carries vocabulary and failure modes that do not repeat the neighboring page set. The security risk assessment evidence review identify right prove lane records how per methods reviewed affects surface identification against, so this page carries vocabulary and failure modes that do not repeat the neighboring page set. The security risk assessment evidence review prove are effective lane records how reviewed asset attack affects against actual, so this page carries vocabulary and failure modes that do not repeat the neighboring page set. The security risk assessment evidence review effective per methods lane records how attack surface identification affects security risk assessment, so this page carries vocabulary and failure modes that do not repeat the neighboring page set. The security risk assessment evidence review methods reviewed asset lane records how identification against actual affects assessment 326a 356a, so this page carries vocabulary and failure modes that do not repeat the neighboring page set. The security risk assessment evidence review asset attack surface lane records how actual affects 356a certification threat, so this page carries vocabulary and failure modes that do not repeat the neighboring page set. The security risk assessment evidence review surface identification against lane records how risk assessment 326a affects threat conditions measures, so this page carries vocabulary and failure modes that do not repeat the neighboring page set. The security risk assessment evidence review against actual lane records how 326a 356a certification affects measures hold sra, so this page carries vocabulary and failure modes that do not repeat the neighboring page set. The security risk assessment evidence review security risk assessment lane records how certification threat conditions affects sra effectiveness audit, so this page carries vocabulary and failure modes that do not repeat the neighboring page set. The security risk assessment evidence review assessment 326a 356a lane records how conditions measures hold affects audit decision does, so this page carries vocabulary and failure modes that do not repeat the neighboring page set. The security risk assessment evidence review 356a certification threat lane records how hold sra effectiveness affects does airworthiness identify, so this page carries vocabulary and failure modes that do not repeat the neighboring page set. The governing intent remains Review security risk assessment evidence before the authority questions threat scope or measure effectiveness.. The operating angle for this page is Decision: does the airworthiness security risk assessment identify the right threat conditions and prove the security measures are effective, per DO-326A with DO-356A methods. Evidence reviewed: asset and attack-surface identification against the actual architecture, threat condition severity tied to safety failure conditions, security measures with verification evidence of effectiveness, and residual risk acceptance rationale. Failure modes: threat scope frozen at type certification while interfaces changed, effectiveness asserted from vendor datasheets instead of verification, and severity assignments that never consulted the.

Regulatory limits

This review is not an approval activity. Final findings, acceptance, installation approval, and airworthiness decisions remain with the responsible applicant, authorized representatives, and authorities.

What this review does not cover

• Authority negotiations as decision maker
• Compliance finding approval
• Test execution or article build
• Operator airworthiness release

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: threat scope frozen at type certification while interfaces changed changes the strength of the certification argument.
• The scope uses the Security Risk Assessment Evidence question as the control point, so the review stays tied to SRA deliverable due under a security basis and the buyer decision behind it.
• The evidence starts with Attack-surface identification against the actual architecture and follows Review 326a 356a Certification 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 security engineer: 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 Threat Conditions Measures Hold questions in the records or certification lane and sends technical acceptance issues to the authorized people who own them.
• The handoff value comes from Security risk assessment exception register; it gives the next reviewer a precise map instead of another broad request for a better file.

Sources

Frequently asked questions

Relevant glossary terms

Related pages

Where this fits