Environmental qualification

DO-160 Section 20 support for RF susceptibility levels that match the HIRF case

emc engineer, qualification engineer, certification liaisons use this page when HIRF compliance planning for an installation. EE reviews category selection against the aircraft-level HIRF environment and equipment criticality, modulation and dwell choices in the test procedures, monitoring adequacy during exposure (what counts as susceptibility) with the baseline data and cited standards or rules. The buyer receives a mapped record set, unsupported-claim log, missing-data request list, and action plan that separates complete evidence from items needing specialist judgment.

What gets reviewed

Compare category selection against the aircraft-level HIRF environment and equipment criticality against the claim it supports.
Trace modulation and dwell choices in the test procedures against the claim it supports.
Challenge monitoring adequacy during exposure (what counts as susceptibility) against the claim it supports.
Reconcile link from equipment-level results to the aircraft HIRF compliance argument against the claim it supports.
Confirm approval basis against the claim it supports.
Index configuration definition against the claim it supports.

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 review notes that evidence link: category selection against the aircraft-level HIRF environment and equipment criticality fails review if the cited record cannot be tied to the current baseline.
Limit carryover: modulation and dwell choices in the test procedures fails review if the cited record cannot be tied to the current baseline.
Source control: monitoring adequacy during exposure (what counts as susceptibility) fails review if the cited record cannot be tied to the current baseline.
Closure owner: link from equipment-level results to the aircraft HIRF compliance argument fails review if the cited record cannot be tied to the current baseline.
Configuration match: approval basis fails review if the cited record cannot be tied to the current baseline.

Evidence normally required

Test file: category selection against the aircraft-level HIRF environment and equipment criticality
Analysis note: modulation and dwell choices in the test procedures
Manual source: monitoring adequacy during exposure (what counts as susceptibility)
Configuration item: link from equipment-level results to the aircraft HIRF compliance argument
Closure evidence: approval basis
Baseline record: configuration definition

Common discrepancies

Installer issue: equipment tested at levels below the internal environment the aircraft HIRF analysis assumes.
Buyer concern: susceptibility judged only by hard resets while parameter corruption goes unmonitored.
Program risk: category letters transcribed into installation documents without the qualifying conditions.
Authority question: baseline does not match the delivered records.

How the work runs

Frame 160 Section

Confirm the exact event, affected file set, buyer role, and decision standard before any category selection against the aircraft-level hirf environment and equipment criticality is treated as sufficient.

Trace Support 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 Levels Match

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

Package Case Environmental

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

The review notes that evidence map for DO-160 Section 20 RF Susceptibility
Discrepancy register for DO-160 Section 20 RF Susceptibility
Applicability and approval basis summary
Source record request list

Who uses the output

EMC engineers use the map to brief the decision.
qualification engineers use the register to assign closure.
certification liaisons use the request list to collect source records.

How the work fits into the transaction or program

This work sits inside the surrounding records or certification workflow and turns loose evidence questions into an ordered closure file. The page-specific framing is do the Section 20 conducted and radiated susceptibility categories and test levels bound the installation's HIRF certification case. The review notes that evidence reviewed: category selection against the aircraft-level HIRF environment and equipment criticality, modulation and dwell choices in the test procedures, monitoring adequacy during exposure (what counts as susceptibility), and the link from equipment-level results to the aircraft HIRF compliance argument. Failure modes include equipment tested at levels below the internal. For 160 section susceptibility support, 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 do 160 section 20 rf susceptibility support scope is intentionally narrow: Review Section 20 category selection and susceptibility test evidence against the aircraft HIRF compliance case.. The 160 Section Susceptibility evidence question is tested against category selection against the aircraft-level hirf environment and equipment criticality and not against a generic checklist copied from another page. The Support Evidence Review trigger is hirf compliance planning for an installation, so the review ranks gaps by decision impact instead of document volume. The Levels Match Hirf searcher pattern is An EMC or certification engineer searching for which Section 20 category and levels their installation's HIRF case requires.. The Case Environmental Qualification evidence trail has to show source location, current status, conflicting entries, and the owner who can close the issue. The Level Alignment 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 emc engineer, with unresolved items preserved as decisions rather than softened into narrative prose. The deliverable stays anchored on evidence map for do-160 section 20 rf susceptibility, 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 do the Section 20 conducted and radiated susceptibility categories and test levels bound the installation's HIRF certification case. The review notes that evidence reviewed: category selection against the aircraft-level HIRF environment and equipment criticality, modulation and dwell choices in the test procedures, monitoring adequacy during exposure (what counts as susceptibility), and the link from equipment-level results to the aircraft HIRF compliance argument. The failure pattern includes equipment tested at levels below the internal environment the aircraft HIRF analysis assumes, susceptibility judged only by hard resets while parameter corruption goes unmonitored, and category letters transcribed into installation documents without the qualifying conditions. The do 160 section 20 rf susceptibility support 160 section susceptibility lane records how hirf case environmental affects alignment decision conducted, so this page carries vocabulary and failure modes that do not repeat the neighboring page set. The do 160 section 20 rf susceptibility support susceptibility levels match lane records how environmental qualification level affects conducted radiated categories, so this page carries vocabulary and failure modes that do not repeat the neighboring page set. The do 160 section 20 rf susceptibility support match hirf case lane records how level alignment decision affects categories test bound, so this page carries vocabulary and failure modes that do not repeat the neighboring page set. The do 160 section 20 rf susceptibility support case environmental qualification lane records how decision conducted radiated affects bound installation certification, so this page carries vocabulary and failure modes that do not repeat the neighboring page set. The do 160 section 20 rf susceptibility support qualification level alignment lane records how radiated categories test affects certification reviewed category, so this page carries vocabulary and failure modes that do not repeat the neighboring page set. The do 160 section 20 rf susceptibility support alignment decision conducted lane records how test bound installation affects category selection against, so this page carries vocabulary and failure modes that do not repeat the neighboring page set. The do 160 section 20 rf susceptibility support conducted radiated categories lane records how installation certification reviewed affects against aircraft environment, so this page carries vocabulary and failure modes that do not repeat the neighboring page set. The do 160 section 20 rf susceptibility support categories test bound lane records how reviewed category selection affects environment equipment criticality, so this page carries vocabulary and failure modes that do not repeat the neighboring page set. The do 160 section 20 rf susceptibility support bound installation certification lane records how selection against aircraft affects criticality modulation dwell, so this page carries vocabulary and failure modes that do not repeat the neighboring page set. The do 160 section 20 rf susceptibility support certification reviewed category lane records how aircraft environment equipment affects dwell choices, so this page carries vocabulary and failure modes that do not repeat the neighboring page set. The do 160 section 20 rf susceptibility support category selection against lane records how equipment criticality modulation affects 160 section susceptibility, so this page carries vocabulary and failure modes that do not repeat the neighboring page set. The do 160 section 20 rf susceptibility support against aircraft environment lane records how modulation dwell choices affects susceptibility levels match, so this page carries vocabulary and failure modes that do not repeat the neighboring page set. The do 160 section 20 rf susceptibility support environment equipment criticality lane records how choices affects match hirf case, so this page carries vocabulary and failure modes that do not repeat the neighboring page set. The do 160 section 20 rf susceptibility support criticality modulation dwell lane records how section susceptibility levels affects case environmental qualification, so this page carries vocabulary and failure modes that do not repeat the neighboring page set. The do 160 section 20 rf susceptibility support dwell choices lane records how levels match hirf affects qualification level alignment, so this page carries vocabulary and failure modes that do not repeat the neighboring page set. The do 160 section 20 rf susceptibility support 160 section susceptibility lane records how hirf case environmental affects alignment decision conducted, so this page carries vocabulary and failure modes that do not repeat the neighboring page set. The do 160 section 20 rf susceptibility support susceptibility levels match lane records how environmental qualification level affects conducted radiated categories, so this page carries vocabulary and failure modes that do not repeat the neighboring page set. The do 160 section 20 rf susceptibility support match hirf case lane records how level alignment decision affects categories test bound, so this page carries vocabulary and failure modes that do not repeat the neighboring page set. The governing intent remains Review Section 20 category selection and susceptibility test evidence against the aircraft HIRF compliance case.. The operating angle for this page is Decision: do the Section 20 conducted and radiated susceptibility categories and test levels bound the installation's HIRF certification case. The review notes that evidence reviewed: category selection against the aircraft-level HIRF environment and equipment criticality, modulation and dwell choices in the test procedures, monitoring adequacy during exposure (what counts as susceptibility), and the link from equipment-level results to the aircraft HIRF compliance argument. Failure modes: equipment tested at levels below the internal environment the aircraft HIRF analysis assumes, susceptibility judged only by hard resets while parameter corruption goes unmonitored, and category letters transcribed into installation documents without the qualifying.

Start with a single asset

Reduce finding cycles by checking the package first.

Regulatory limits

EE does not replace the applicant, STC holder, authorized representative, or regulator. Approval, acceptance, and airworthiness decisions remain with the people and authorities assigned to those functions.

Specific to this review

do the Section 20 conducted and radiated susceptibility categories and test levels bound the installation's HIRF certification case.
Category selection against the aircraft-level HIRF environment and equipment criticality often controls whether later summaries can be trusted.
Equipment tested at levels below the internal environment the aircraft HIRF analysis assumes is treated as a record gap until an owner closes it.
FAA and EASA evidence should stay distinguishable from commercial claims and installer notes.
The scope uses the 160 Section Susceptibility Support question as the control point, so the review stays tied to HIRF compliance planning for an installation and the buyer decision behind it.
The evidence starts with Category selection against the aircraft-level HIRF environment and equipment criticality and follows Evidence Review Levels Match 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 EMC 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 Hirf Case Environmental Qualification questions in the records or certification lane and sends technical acceptance issues to the authorized people who own them.
The handoff value comes from Evidence map for DO-160 Section 20 RF Susceptibility; it gives the next reviewer a precise map instead of another broad request for a better file.

Sources

DO-160G - Environmental Conditions and Test Procedures for Airborne Equipment

RTCA. Environmental qualification test categories and procedures referenced by TSO and equipment qualification.

Frequently asked questions

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

The scope is tied to 160 section susceptibility support and to the decision named in the request. A general audit can list weak records; this pass ranks the gaps by whether they block hirf compliance planning for an installation or can be closed later without changing the decision.

What evidence has to be available before this work starts?

The starting point is category selection against the aircraft-level hirf environment and equipment criticality, 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 emc engineer 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

High-Intensity Radiated Fields (HIRF)EMI Susceptibility / Immunity Conducted Emissions Environmental Test Categories Qualification Levels

DO-160 Section 19 support for induced-signal susceptibility for interconnected equipmentPlanning do-160 section 19 induced signal? EE reviews DO-160G reports, configuration limits, and missing suppo DO-160 Section 21 emissions support for equipment suppliersDO-160 Section 21 emissions support for equipment suppliers, with source-record checks, discrepancy findings, DO-160G environmental qualification evidence support for navigation equipmentNavigation units draw hard questions on HIRF and lightning sections. We match each DO-160G category you declar Environmental category mapping for airborne equipmentThe installation environment, not a default table, sets your DO-160 categories. We derive the category set and Qualification-test-report review for avionics and equipment suppliersA DO-160 report that skips a category or drifts from the test plan stalls the submittal. We check coverage and

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