Cabin electronic equipment
Cabin electronic equipment qualification evidence support
This support prepares cabin electronic equipment's qualification evidence for a qualification review, where the article's power, flammability, and environmental results are weighed against its specification. A supplier owning the unit runs it when the test results, the configuration they were run on, and the certification basis all have to agree before the review opens. The work reads the qualification data, marks each requirement with no demonstrated result behind it, and stages the gaps for closure. You receive a qualification-focused gap list, a specification-to-result trace, and an order for clearing what remains open.
When this review is needed
- A qualification review is scheduled and the supplier wants the power and flammability results checked against the specification first.
- The unit went through several build iterations and it is unclear which configuration each qualification result represents.
- The specification's environmental categories were adjusted and earlier results may no longer match the assigned levels.
- Flammability results have to be reconciled with the materials list the unit is currently built from.
The problem
Cabin electronics qualification produces a set of results that look complete until someone asks which build each one belongs to. These units iterate quickly on connectors, enclosures, and finishes, and the DO-160G and flammability campaigns rarely re-run in full for every change, so results accumulate across a chain of builds. By review, the supplier has passing reports whose relationship to the article that will actually ship, and to the current materials list, is no longer obvious to a reader coming in cold. The specification's environmental assignments may also have shifted since the earliest results were captured.
What gets reviewed
- Power-characteristics and load results against the current specification values
- Flammability results against the current materials and finishes the unit is built from
- DO-160G environmental results against the categories the certification basis assigns
- Article-configuration mapping so each result is tied to the build it was demonstrated on
- The compliance matrix mapping each specification requirement to a named result and revision
- Traceability from the current article definition to the evidence that represents it
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
- Power and load results meet the current specification values, not those in force at an earlier build
- Flammability results cover the materials and finishes on the article that will ship
- Every DO-160G category assigned by the basis has a passing result at the current configuration
- Each qualification result names the build it represents and that build maps to the shippable article
- No matrix line relies on a result superseded by a later configuration or specification change
Evidence normally required
- The unit specification, the certification basis, and the means-of-compliance statement
- Power-characteristics and load test data
- Flammability results and the current materials and finishes list
- DO-160G environmental qualification reports
- The build history and the shippable-article configuration definition
Common discrepancies
- A flammability result run on an earlier enclosure finish than the shippable article carries
- A DO-160G category with a result at a superseded build and no rerun for the current one
- Power results that met an earlier specification value later tightened in the current basis
- A qualification result with no clear mapping to any recorded build
What is at stake
A flammability or environmental result run on an earlier enclosure or finish reads as compliant until the build it represents is compared to the shippable article, at which point it is a gap on a requirement the review will not waive. Discovering that during the review leaves the unit short a demonstrated result and, for flammability or a full DO-160G category, facing a retest whose lead time can move the program's milestones.
How the work runs
Freeze the specification
Fix the current specification and certification basis as the criteria every result is judged against.
Map result to build
Tie each qualification result to the build it represents and compare that build to the shippable article.
Compare to requirement
Check each power, flammability, and environmental result against the requirement as it now reads.
Stage the closure
Order open items by review impact and retest lead time and deliver the sequence.
What the buyer receives
- A qualification-focused gap list ordered by which open requirement blocks the review
- A trace map from each specification requirement to the result and build behind it
- A closure sequence that accounts for flammability and full-category retest lead times
Who uses the output
- Certification engineers assembling the cabin unit qualification data package
- Materials and test engineers reconciling results to the builds they were run on
- Program leads planning around retest lead times for open requirements
How the work fits into the transaction or program
This review follows the qualification campaign and precedes its review. It settles whether the accumulated results meet the specification as it now reads and whether each belongs to the shippable build, so the review evaluates a coherent package rather than results scattered across a chain of iterations.
Start with a single asset
Confirm requirements map to substantiating evidence.
Jurisdiction-specific considerations
For a unit qualified toward both FAA and EASA acceptance, the two can assign environmental categories or flammability expectations that differ in detail, and one result set must satisfy the stricter reading of each. The review marks any result that clears one authority's assignment and leaves a shortfall against the other.
Regulatory limits
This work assesses readiness of the supplier's qualification evidence. It renders no airworthiness finding, grants no authorization, and does not act for the authority. Compliance is found only by the reviewing authority against the submitted data.
What this review does not cover
- Executing the flammability, power, or DO-160G environmental tests
- Maintaining the materials list or the build configuration records
- Presenting the qualification package to the authority for the supplier
Specific to this review
- Cabin units iterate quickly on enclosures and finishes, so qualification results accumulate across builds and detach from the shippable article.
- Flammability results are pinned to specific materials and finishes, so a finish change during iteration silently invalidates them.
- Full DO-160G category retests are rarely rerun for every build change, which is why result-to-build mapping catches so much.
- An environmental assignment tightened after the earliest results were captured can turn a recorded pass into a shortfall.
Sources
U.S. Government (eCFR). Type certificates, STCs (Subpart E), TSO authorizations (Subpart O), PMA (Subpart K), and export airworthiness approvals (Subpart L).
European Union / EASA. EASA design and production certification, STCs, ETSO authorizations, and EASA Form 1 release.
RTCA. Environmental qualification test categories and procedures referenced by TSO and equipment qualification.
SAE International. Development assurance process at aircraft and system level, including requirements capture and validation.
Frequently asked questions
How do you handle results collected across several builds of the unit?
Each qualification result is mapped to the build it was run on, and that build is compared to the article that will actually ship. A power or flammability result on an earlier enclosure or finish does not carry to the shippable article, so where the builds diverge on a requirement, the review records it as a gap rather than a demonstrated pass.
Relevant glossary terms
Related pages
Where this fits
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.