Antenna qualification
Antenna system qualification certification support
This review checks whether an antenna system's qualification evidence actually covers the requirements it is cited against. A certification specialist reads the RF characterization, lightning results, and DO-160G reports alongside the test article definition, then confirms each result was produced on the right hardware, under the right conditions, to close the right requirement. It is used when a supplier is compiling qualification evidence and wants an independent read before that data feeds a TSO or an installation STC. You receive a coverage assessment, a list of requirements not yet backed by valid evidence, and a defined route to close them.
When this review is needed
- An antenna qualification campaign has wrapped and the supplier wants the RF, lightning, and environmental data reviewed before it anchors a compliance argument.
- A radome or feed change forced a partial requalification and it is unclear which prior results still apply.
- Test data came from separate RF, lightning, and environmental houses whose configurations and criteria may not agree.
- The team is deciding whether to defend an existing lightning result or retest, and needs a clear coverage picture first.
The problem
Antenna qualification splits across disciplines: RF characterization in one facility, lightning in another, environmental in a third, each with its own article state and its own pass criteria. When the results are collected into a single package, no one has confirmed that the article tested for RF is the same standard tested for lightning, or that the criteria each house applied match the requirement the supplier will cite. The set can look complete while the seams between disciplines hide the real gaps.
What gets reviewed
- RF performance characterization checked against the parameters the design must claim
- Lightning direct and indirect effects coverage for the antenna's intended zones
- DO-160G environmental categories mapped to the antenna's operating envelope
- Test article configuration compared across the RF, lightning, and environmental campaigns
- Continuity of results where a radome, feed, or connector change occurred mid-campaign
- Traceability from each antenna requirement to a report that was actually run on the shipping article
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
- The antenna article tested for RF matches the standard tested for lightning and environmental effects
- Each RF parameter, lightning zone, and DO-160G category the design must meet has a supporting result
- Pass criteria in each report reflect the requirement rather than a house default
- Results predating a radome or feed change are either still valid or explicitly superseded
- No requirement is marked qualified on a test that examined a different antenna parameter
Evidence normally required
- The antenna requirement set and intended RF, lightning, and environmental envelope
- RF characterization test plans and reports
- Lightning direct and indirect effects results for the antenna
- Environmental qualification reports covering the applicable DO-160G categories
- Configuration records for each test article across the RF, lightning, and environmental runs
Common discrepancies
- An RF result and a lightning result run on antenna articles at different hardware standards
- A lightning zone the design needs that was never tested because the envelope was not fully written down
- House-default pass criteria in a report that do not match the antenna's actual requirement
- Early RF characterization still cited after a feed or radome change that could shift performance
What is at stake
A qualification gap carried into a certification package emerges when a finding is traced back to its test and the article, condition, or criterion does not hold up. Recovering means rebuilding an antenna article and rebooking an RF chamber or lightning lab, which slips the program by a full test cycle instead of the review cycle it would have taken to catch the gap early.
How the work runs
Define the envelope
Write down the RF, lightning, and environmental envelope the antenna must meet so coverage can be judged concretely.
Reconcile the articles
Confirm the article tested across RF, lightning, and environmental campaigns is one consistent hardware standard.
Check criteria and zones
Match each report's pass criteria and lightning zones to the actual requirement rather than a house default.
Route the closures
Separate the gaps that need a retest from those needing re-analysis or a documentation fix.
What the buyer receives
- A coverage assessment mapping each RF, lightning, and DO-160G requirement to a valid report
- A register of antenna requirements that qualification evidence does not yet close, with the shortfall named for each
- A closure route sorting the open items into retest, re-analysis, and record correction
Who uses the output
- Supplier certification engineers assembling the antenna qualification basis
- RF and lightning test engineers deciding what still needs to run
- Program managers judging whether a retest is worth its schedule cost before the data is used
How the work fits into the transaction or program
The review follows the test campaigns and precedes any reliance on their results. It gives the supplier one read across the RF, lightning, and environmental data so that when this qualification feeds a TSO or an installation STC, every finding resting on it is already known to hold, and no cross-discipline gap surfaces after the package is filed.
Start with a single asset
Confirm requirements map to substantiating evidence.
Jurisdiction-specific considerations
The FAA and EASA both accept DO-160G and standard lightning methods, but they can differ on how test credit survives a design change and on which lightning zones a claim must address. The review flags the credit and zoning claims most likely to be read differently between the two authorities.
Regulatory limits
This work assesses whether qualification evidence supports the claims made against it. It does not certify the antenna, make an airworthiness finding, or grant any approval, and it does not substitute for the applicant's own compliance demonstration.
What this review does not cover
- Conducting or witnessing the RF, lightning, or environmental tests
- Selecting test categories or writing the qualification test plans
- Rendering the formal compliance finding that rests with the applicant and the authority
Specific to this review
- Antenna qualification is inherently multi-discipline, so the most common gap is not a missing test but two tests run on articles at different hardware standards.
- Lightning coverage is defined by zones, so an envelope that omits a zone leaves a real gap even when every performed test passed.
- A feed or radome change can shift RF performance enough to invalidate earlier characterization while leaving lightning and environmental results intact.
- House-default pass criteria are a frequent trap because a report can pass cleanly against a threshold that is not the one the requirement sets.
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
Our RF, lightning, and environmental tests all passed. Where would a gap come from?
The gaps in antenna qualification usually live between the disciplines, not inside them. A common one is that the article tested for RF was a different hardware standard than the one tested for lightning, so neither result alone covers the shipping antenna. Others include a lightning zone the envelope never listed, or house-default pass criteria that do not match your requirement. The review reads the three campaigns together to find those seams before the data has to defend a claim.
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.