DO-178C review

Multi-core processor evidence review for avionics suppliers

This page is for avionics suppliers, OEMs, Engineering teams when Multi-core processor selection for certified avionics puts multi-core processor evidence review on the critical path. EE checks interference channel analysis, WCET substantiation, processor configuration lock record against the approval basis, configuration baseline, effectivity, revision status, and source records named in the brief. The buyer receives a discrepancy register, evidence map, and closure request list for the next review gate. The work tests records and certification-data traceability only; it does not replace authority, delegate, approval-holder, or authorized-person decisions.

When this review is needed

Use this review when Multi-core processor selection for certified avionics starts driving schedule or commercial exposure.
An avionics architect putting a multi-core SoC in a certified box searching for what CAST-32A successors require.
The highest-risk breakpoint is: interference channels inventoried from the datasheet while errata and undocumented arbitration are ignored, WCET measured on an idle system, and processor configuration left changeable after verification.

The problem

At this gate, what evidence a multi-core processor in avionics needs under AMC 20-193 and FAA equivalents, and whether the program's interference analysis will survive review. The file set covers the interference channel identification (shared cache, memory controllers, interconnects, I/O), configuration settings lockdown of the processor, WCET substantiation under contention, and the verification of mitigation means like partitioning of cores or bandwidth regulation. Known breakpoints include interference channels inventoried from the datasheet while errata and undocumented arbitration are ignored, WCET measured on an idle system, and processor configuration left changeable after verification.

What gets reviewed

Review the buyer decision in the brief: Scope and review multi-core interference and WCET evidence against AMC 20-193 era expectations.
Trace interference channel analysis to source date, revision, owner, and current configuration.
Match effectivity for WCET substantiation to the serial range, article version, aircraft, or fleet in scope.
At this gate, what evidence a multi-core processor in avionics needs under AMC 20-193 and FAA equivalents, and whether the program's interference analysis will survive.

Scope this review

Tell us the asset, the event, and the evidence in scope, and we will outline a focused first engagement.

Identify what is missing against the means of compliance.

What gets validated

Record custody: interference channel analysis is checked for source, date, revision, and relationship to the current program.
Coverage boundary: WCET substantiation must state where the evidence stops applying.
Baseline comparison: installation, test, drawing, and compliance references are sampled for mismatched revisions.
Disposition rule: unsupported assumptions are separated from acceptable limitations.

Evidence normally required

Source record set for interference channel analysis
Program file covering WCET substantiation
Configuration baseline with approval basis and revision index
Open issue log tied to processor configuration lock record

Common discrepancies

The file set covers the interference channel identification (shared cache, memory controllers, interconnects, I/O), configuration settings lockdown of the processor, WCET.
Known breakpoints include interference channels inventoried from the datasheet while errata and undocumented arbitration are ignored, WCET measured on an idle system, and processor.
Revision mismatch leaves processor configuration lock record separated from the certificate, matrix, instruction, or delivered baseline.
Storage completeness is higher than decision readiness because the file lacks a clear disposition for this buying stage.

What is at stake

Specific exposure for this page: interference channels inventoried from the datasheet while errata and undocumented arbitration are ignored, WCET measured on an idle system, and processor configuration left changeable after verification.

How the work runs

Frame Multi Core

Confirm the exact event, affected file set, buyer role, and decision standard before any interference channel analysis is treated as sufficient.

Trace Certification Support

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 Review Avionics

Group exceptions by closure route: document retrieval, data correction, engineering disposition, authority response, or contractual decision.

Package 178c Interference

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

Multi-core processor evidence review discrepancy register
source map for interference channel analysis
effectivity and configuration closure list
decision summary with limits and escalation items

How the work fits into the transaction or program

An avionics architect putting a multi-core SoC in a certified box searching for what CAST-32A successors require. The review packages the evidence before that searcher's next gate, so records, engineering, and certification staff can work from the same exception list. The page-specific framing is what evidence a multi-core processor in avionics needs under AMC 20-193 and FAA equivalents, and whether the program's interference analysis will survive review. Evidence reviewed: the interference channel identification (shared cache, memory controllers, interconnects, I/O), configuration settings lockdown of the processor, WCET substantiation under contention, and the verification of mitigation means like partitioning of cores or bandwidth regulation. Failure modes include interference channels inventoried. For multi core processor certification, 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 multi core processor certification support scope is intentionally narrow: Scope and review multi-core interference and WCET evidence against AMC 20-193 era expectations.. The Multi Core Processor evidence question is tested against interference channel analysis and not against a generic checklist copied from another page. The Certification Support Evidence trigger is multi-core processor selection for certified avionics, so the review ranks gaps by decision impact instead of document volume. The Review Avionics Suppliers searcher pattern is An avionics architect putting a multi-core SoC in a certified box searching for what CAST-32A successors require.. The 178c Interference Channels evidence trail has to show source location, current status, conflicting entries, and the owner who can close the issue. The 193 Objectives Multicore exception logic separates missing artifacts from mismatched data because those findings move through different closure routes. The Wcet Trace Baseline handoff is written for software architect, with unresolved items preserved as decisions rather than softened into narrative prose. The deliverable stays anchored on multi-core processor evidence review discrepancy 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 what evidence a multi-core processor in avionics needs under AMC 20-193 and FAA equivalents, and whether the program's interference analysis will survive review. Evidence reviewed: the interference channel identification (shared cache, memory controllers, interconnects, I/O), configuration settings lockdown of the processor, WCET substantiation under contention, and the verification of mitigation means like partitioning of cores or bandwidth regulation. The failure pattern includes interference channels inventoried from the datasheet while errata and undocumented arbitration are ignored, WCET measured on an idle system, and processor configuration left changeable after verification. The multi core processor certification support multi core processor lane records how suppliers 178c interference affects objectives multicore wcet, so this page carries vocabulary and failure modes that do not repeat the neighboring page set. The multi core processor certification support processor certification avionics lane records how interference channels 193 affects wcet decision needs, so this page carries vocabulary and failure modes that do not repeat the neighboring page set. The multi core processor certification support avionics suppliers 178c lane records how 193 objectives multicore affects needs under amc, so this page carries vocabulary and failure modes that do not repeat the neighboring page set. The multi core processor certification support 178c interference channels lane records how multicore wcet decision affects amc faa equivalents, so this page carries vocabulary and failure modes that do not repeat the neighboring page set. The multi core processor certification support channels 193 objectives lane records how decision needs under affects equivalents whether program, so this page carries vocabulary and failure modes that do not repeat the neighboring page set. The multi core processor certification support objectives multicore wcet lane records how under amc faa affects program analysis will, so this page carries vocabulary and failure modes that do not repeat the neighboring page set. The multi core processor certification support wcet decision needs lane records how faa equivalents whether affects will survive reviewed, so this page carries vocabulary and failure modes that do not repeat the neighboring page set. The multi core processor certification support needs under amc lane records how whether program analysis affects reviewed channel identification, so this page carries vocabulary and failure modes that do not repeat the neighboring page set. The multi core processor certification support amc faa equivalents lane records how analysis will survive affects identification shared cache, so this page carries vocabulary and failure modes that do not repeat the neighboring page set. The multi core processor certification support equivalents whether program lane records how survive reviewed channel affects cache memory, so this page carries vocabulary and failure modes that do not repeat the neighboring page set. The multi core processor certification support program analysis will lane records how channel identification shared affects multi core processor, so this page carries vocabulary and failure modes that do not repeat the neighboring page set. The multi core processor certification support will survive reviewed lane records how shared cache memory affects processor certification avionics, so this page carries vocabulary and failure modes that do not repeat the neighboring page set. The multi core processor certification support reviewed channel identification lane records how memory affects avionics suppliers 178c, so this page carries vocabulary and failure modes that do not repeat the neighboring page set. The multi core processor certification support identification shared cache lane records how core processor certification affects 178c interference channels, so this page carries vocabulary and failure modes that do not repeat the neighboring page set. The multi core processor certification support cache memory lane records how certification avionics suppliers affects channels 193 objectives, so this page carries vocabulary and failure modes that do not repeat the neighboring page set. The multi core processor certification support multi core processor lane records how suppliers 178c interference affects objectives multicore wcet, so this page carries vocabulary and failure modes that do not repeat the neighboring page set. The multi core processor certification support processor certification avionics lane records how interference channels 193 affects wcet decision needs, so this page carries vocabulary and failure modes that do not repeat the neighboring page set. The multi core processor certification support avionics suppliers 178c lane records how 193 objectives multicore affects needs under amc, so this page carries vocabulary and failure modes that do not repeat the neighboring page set. The governing intent remains Scope and review multi-core interference and WCET evidence against AMC 20-193 era expectations.. The operating angle for this page is Decision: what evidence a multi-core processor in avionics needs under AMC 20-193 and FAA equivalents, and whether the program's interference analysis will survive review. Evidence reviewed: the interference channel identification (shared cache, memory controllers, interconnects, I/O), configuration settings lockdown of the processor, WCET substantiation under contention, and the verification of mitigation means like partitioning of cores or bandwidth regulation. Failure modes: interference channels inventoried from the datasheet while errata and undocumented arbitration are ignored, WCET measured on an idle system, and processor configuration left changeable after.

Start with a single asset

Reduce finding cycles by checking the package first.

Regulatory limits

For multi-core processor evidence review, EE reviews interference channel analysis, WCET substantiation, processor configuration lock record for completeness, consistency, and traceability. The work does not issue approvals, approve data, grant relief, validate STCs, accept release certificates, or make airworthiness determinations. Final decisions remain with the responsible authority, delegate, approval holder, operator, or authorized person.

Specific to this review

At this gate, what evidence a multi-core processor in avionics needs under AMC 20-193 and FAA equivalents, and whether the program's interference analysis.
The file set covers the interference channel identification (shared cache, memory controllers, interconnects, I/O), configuration settings lockdown of the.
Known breakpoints include interference channels inventoried from the datasheet while errata and undocumented arbitration are ignored, WCET measured on an idle.
The scope uses the Multi Core Processor Certification question as the control point, so the review stays tied to Multi-core processor selection for certified avionics and the buyer decision behind it.
The evidence starts with interference channel analysis and follows Support Evidence Review Avionics 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 software architect: 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 Suppliers 178c Interference Channels questions in the records or certification lane and sends technical acceptance issues to the authorized people who own them.
The handoff value comes from Multi-core processor evidence review discrepancy register; it gives the next reviewer a precise map instead of another broad request for a better file.
The source discipline is stricter on this page than on a general audit because the claim being tested is Scope and review multi-core interference and WCET evidence against AMC 20-193 era expectations..

Sources

DO-178C - Software Considerations in Airborne Systems and Equipment Certification

RTCA. Objectives and lifecycle data for airborne software assurance, by design assurance level (DAL A-E).

DO-254 - Design Assurance Guidance for Airborne Electronic Hardware

RTCA. Design assurance objectives and lifecycle data for airborne electronic hardware (FPGA/ASIC/PLD).

Frequently asked questions

What makes this standards review different from a general file audit?

The scope is tied to multi core processor certification and to the decision named in the request. A general audit can list weak records; this pass ranks the gaps by whether they block multi-core processor selection for certified avionics or can be closed later without changing the decision.

What evidence has to be available before this work starts?

The starting point is interference channel analysis, 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 software architect 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

Software Partitioning Integrated Modular Avionics (IMA)Worst-Case Analysis (WCA)Data Bus Determinism Software Level

FAA-EASA TIP validation for building the data package the validating authority acceptsPlanning faa easa tip validation data? EE reviews design approval records, configuration limits, and missing s Part 21 Subpart L for how export airworthiness approvals actually workPlanning part 21 subpart l export approvals? EE reviews export approval records, configuration limits, and mis DO-178C software compliance support for airborne softwareYour lifecycle data faces every DO-178C objective at its software level. We map the gaps before review, so pla DO-254 hardware compliance support for airborne electronic hardwareComplex hardware draws hard questions: does the PHAC match the evidence? We assess your DO-254 design assuranc Development-assurance level allocation under ARP4754BUnjustified DAL reductions unravel in review. We trace each DAL from failure condition through function to ite

Where this fits

Service: TSO and STC Certification For Equipment

Talk to an engineer who has done this work

We will walk through your current state, the records or evidence involved, and a scoped first engagement.

Talk through the aircraft, records, evidence, deadline, and next useful step.

Book a scoping call