{"schema_version":1,"research_id":"eoa_inverse_innovation_exp06_external_evaluation_20260803","source_assessment_id":"catalytic_pathway_enablement__aviation_aeronautics:P2:v0","cell_id":"catalytic_pathway_enablement__aviation_aeronautics","search_queries":["site:faa.gov aircraft cabin ozone converter catalyst FAA report","site:ecfr.gov 14 CFR 25.832 cabin ozone concentration","aircraft ozone converter product airline operator installation","regenerable aircraft ozone decomposition catalyst regeneration","airline selects aircraft ozone converter Pall Aerospace ozone VOC converter order","site:pall.com aerospace ozone converter aircraft cabin","site:collinsaerospace.com ozone converter aircraft cabin","site:basf.com aerospace ozone converter airline installation maintenance","eCFR 14 CFR 25.832 Cabin ozone concentration","eCFR 14 CFR 121.578 Cabin ozone concentration"],"sources":[{"source_id":"S01","title":"14 CFR Part 25, §25.832—Cabin ozone concentration (2022 edition)","publisher":"U.S. Government Publishing Office / Federal Aviation Administration","url":"https://www.govinfo.gov/content/pkg/CFR-2022-title14-vol1/pdf/CFR-2022-title14-vol1-part25.pdf","source_class":"GOVERNMENT_OR_REGULATOR","publication_date":"2022-01-01","accessed_at":"2026-08-03","claims_supported":["Transport-category aircraft must meet stated cabin-ozone limits above specified flight levels.","Compliance may be demonstrated by analysis or testing of operating limitations or by showing that the ventilation system, including ozone-control equipment, maintains the limits.","An aircraft installation remains subject to airworthiness approval rather than authorization by a laboratory investigator."]},{"source_id":"S02","title":"AC 120-38—Transport Category Airplanes Cabin Ozone Concentrations","publisher":"Federal Aviation Administration","url":"https://www.faa.gov/documentLibrary/media/Advisory_Circular/AC_120-38.pdf","source_class":"OFFICIAL_GUIDANCE","publication_date":"1980-10-10","accessed_at":"2026-08-03","claims_supported":["FAA guidance identifies filters and catalytic converters as available methods for controlling cabin ozone.","FAA examples calculate required removal efficiencies as high as 81% for an instantaneous worst case and 92% for a time-weighted worst case.","Operators must substantiate compliance through analysis or tests; installing a particular device is not automatically sufficient."]},{"source_id":"S03","title":"Report to the FAA on the Airliner Cabin Environment","publisher":"Federal Aviation Administration / ACER-RITE","url":"https://www.faa.gov/sites/faa.gov/files/data_research/research/med_humanfacs/cer/AirlinerCabinEnvironmentReport.pdf","source_class":"GOVERNMENT_OR_REGULATOR","publication_date":"2010","accessed_at":"2026-08-03","claims_supported":["Continuous measurements on 76 commercial flight segments found highly variable cabin ozone, including peak-hour values up to 275 ppb.","Flights classified as having ozone catalysts had mean peak-hour ozone around 4.7 ppb versus 47 ppb without them, although converter presence was inferred by proxy rather than verified.","Ozone reactions on cabin occupants and surfaces generate volatile oxidation products, so disappearance of ozone alone is not a sufficient safety endpoint.","The report recommended reconsideration of whether the existing ozone limits adequately protect passengers and crew."]},{"source_id":"S04","title":"BASF’s new VOZC converter technology selected by Airbus for its A320 fleet starting in 2024","publisher":"BASF Environmental Catalyst and Metal Solutions","url":"https://basf-catalystsmetals.com/en-us/press-releases/basfs-new-vozc-converter-technology-selected-airbus-its-a320-fleet-starting-2024","source_class":"COMMERCIAL_FIRST_PARTY","publication_date":"2023-03-24","accessed_at":"2026-08-03","claims_supported":["Airbus selected BASF to develop and supply ozone/VOC converter technology for the A320 Family after a multi-year technical competition.","The selection identifies an aircraft OEM adopter and an existing commercial supply route.","BASF reports 18 years of commercial ozone/VOC-converter experience."]},{"source_id":"S05","title":"BASF updates the Abbreviated Component Maintenance Manuals for its Deoxo ozone and ozone/VOC converter portfolios","publisher":"BASF","url":"https://www.basf.com/se/en/media/news-releases/2020/05/p-20-184","source_class":"COMMERCIAL_FIRST_PARTY","publication_date":"2020-05-27","accessed_at":"2026-08-03","claims_supported":["Commercial Deoxo converters are rotable aircraft parts requiring functional tests of ozone-conversion efficiency and pressure drop.","BASF supplies converters for factory installation and retrofit on aircraft lacking converters or needing upgraded performance.","Updated maintenance procedures and MRO-provider compliance demonstrate an established testing, servicing and return-to-service workflow.","BASF states that it pioneered its aircraft ozone converter more than 30 years earlier."]},{"source_id":"S06","title":"Aerospace Solution Story—Cabin air filtration and catalytic converters","publisher":"Pall Corporation","url":"https://www.pall.co.uk/uk/en/aerospace/solutions/aerospace-solution-story.html","source_class":"COMMERCIAL_FIRST_PARTY","publication_date":"undated","accessed_at":"2026-08-03","claims_supported":["Aircraft ozone converters already use catalyst-coated honeycomb or bead structures in metal vessels.","Ozone converters have been standard equipment on long-haul aircraft, with converter options identified for multiple Airbus families.","Commercial experience shows gradual efficiency loss from accumulated contaminants and possible poisoning by episodic oil-fume events.","Poisoned or masked converters are replaced, regenerated or recored.","Temperature, residence time and inlet composition affect conversion and possible unwanted products."]},{"source_id":"S07","title":"Commercial development and experience with catalytic ozone abatement in jet aircraft","publisher":"Catalysis Today (Elsevier)","url":"https://www.sciencedirect.com/science/article/pii/092058619280186Q","source_class":"PRIMARY_RESEARCH","publication_date":"1992-03-11","accessed_at":"2026-08-03","claims_supported":["The first commercial aircraft application of catalytic ozone abatement occurred in 1983.","Catalytic decomposition was already described as state of the art for aircraft cabin-air purification.","Returned abaters were performance-tested and analyzed for activity decline after accumulated flight use."]},{"source_id":"S08","title":"Low-temperature and in-situ regenerable ozone decomposition in aircraft with zeolite-encapsulated manganese-oxo cluster catalyst","publisher":"Chemical Engineering Journal (Elsevier)","url":"https://www.sciencedirect.com/science/article/pii/S1385894724089721","source_class":"PRIMARY_RESEARCH","publication_date":"2024-12-01","accessed_at":"2026-08-03","claims_supported":["A structured Mn-oxo zeolite catalyst was explicitly developed for an aircraft ozone converter.","The reported catalyst maintained greater than 95% decomposition for 98 hours at −5 °C and high space velocity.","Activity was reproduced after air regeneration at 180 °C for one hour.","The paper proposes direct cold-air processing and periodic in-situ regeneration, closely matching the candidate's claimed catalytic and regeneration cycle."]}],"problem_evidence":{"support":"STRONG","rationale":"The problem is externally visible: regulations impose cabin-ozone limits, FAA guidance shows operating cases requiring substantial removal efficiency, and flight measurements found variable ozone with peak-hour observations reaching 275 ppb. Converter-equipped flights had much lower measured ozone, although converter status in that study was inferred and most observations do not establish widespread regulatory noncompliance. Ozone-derived products also make selectivity relevant.","source_ids":["S01","S02","S03"]},"stakeholder_evidence":{"support":"STRONG","rationale":"FAA is an identifiable authorizer, certificate holders and design organizations are responsible for compliance, Airbus is an identified adopter, and BASF, Pall and MRO providers support established converter supply and maintenance workflows. Airbus's competitive selection and BASF's operator-facing maintenance instructions constitute expressed demand, although no stakeholder has expressed a need for this unspecified new cartridge rather than existing products.","source_ids":["S01","S02","S04","S05","S06"]},"prior_art":{"proximity":"ESTABLISHED_PRACTICE","closest_analogues":[{"name":"BASF Deoxo rotable ozone and ozone/VOC converters","similarity":"Direct commercial match: catalyst cartridges for aircraft cabin-air systems, factory or retrofit installation, conversion and pressure-drop checks, maintenance and restoration through an MRO workflow.","remaining_difference":"The candidate proposes a laboratory-controlled development program but does not name a catalyst, geometry or performance target that distinguishes it from Deoxo hardware and service practice.","source_ids":["S04","S05"]},{"name":"Pall aircraft catalytic converter practice","similarity":"Direct architectural match: retained catalyst on honeycomb or beads, controlled residence and temperature, known contaminant poisoning, and replacement, regeneration or recoring.","remaining_difference":"The candidate adds a particularly explicit experimental matrix, monitoring package and halt logic; these are validation details rather than a distinct converter principle.","source_ids":["S06"]},{"name":"Commercial catalytic ozone abaters used since 1983","similarity":"Direct historical match for catalytic ozone decomposition in jet-aircraft cabin supply air, including flight experience and investigation of activity decline.","remaining_difference":"Modern sensors and randomized specimen-level testing could improve evidence quality but do not create a new intervention category.","source_ids":["S07"]},{"name":"2024 Mn-oxo zeolite structured aircraft catalyst with regeneration","similarity":"Very close research match to a structured, low-temperature aircraft ozone converter with repeated high conversion and demonstrated regeneration.","remaining_difference":"The published system uses a specified Mn-oxo zeolite, reports quantitative low-temperature performance and proposes in-situ regeneration; the candidate instead leaves its material unspecified and proposes off-aircraft regeneration.","source_ids":["S08"]}],"distinctive_claim_remaining":"No distinct system-level claim remains: removable retained aircraft ozone catalysts, pressure-drop and conversion testing, deactivation monitoring, and regeneration or recoring are established. A potentially distinctive claim would require a named catalyst/support/geometry and regeneration protocol that, against a current commercial converter and the 2024 Mn-oxo-zeolite result, precommits and demonstrates a quantitative advantage in cold/high-flow conversion, pressure drop, contaminant tolerance, byproduct profile, shedding, recovered activity or lifecycle burden. The present candidate states none of those differentiators.","confidence":"HIGH"},"implementation_evidence":{"support":"MODERATE","rationale":"Technical feasibility of the general architecture is strong because commercial converters, long-duration aircraft experience, MRO procedures and a recent regenerable structured catalyst already exist. Workflow feasibility is also credible for rotable cartridges. Candidate-specific feasibility remains unverified because the active material, support, geometry, loading, inlet envelope and regeneration chemistry are unspecified. Aircraft integration would require design-approval evidence, and ozone loss, pressure drop, contaminants, particles, heat and oxidation products must be jointly tested.","source_ids":["S01","S02","S03","S04","S05","S06","S07","S08"]},"scores":{"meaningful_impact":{"score":4,"rationale":"Cabin ozone is regulated, measured excursions can be material, and converter-equipped flights showed substantially lower ozone. The evidence does not quantify how many current aircraft lack adequate control.","source_ids":["S01","S02","S03"]},"stakeholder_pull":{"score":5,"rationale":"FAA requirements, an Airbus supplier selection, global commercial distribution and operator-facing MRO instructions show strong pull for ozone-control capability.","source_ids":["S01","S02","S04","S05"]},"incremental_advantage":{"score":1,"rationale":"The candidate provides no named material or quantified benefit over commercial rotable converters, commercial regeneration/recoring, or the 2024 regenerable aircraft catalyst.","source_ids":["S05","S06","S08"]},"distinctiveness_plausibility":{"score":1,"rationale":"The core intervention and regeneration cycle closely collide with decades of commercial practice and recent research; only test-governance detail remains visibly different.","source_ids":["S05","S06","S07","S08"]},"technical_implementability":{"score":5,"rationale":"Catalyst-coated aircraft converter structures are deployed, maintained and regenerated, and recent primary research reports a structured low-temperature regenerable catalyst.","source_ids":["S05","S06","S07","S08"]},"adoption_authority_feasibility":{"score":3,"rationale":"FAA rules and existing Airbus programs show a viable approval and adoption pathway, but a new cartridge would need aircraft-specific design approval, certification-basis work and authorized maintenance instructions not supplied here.","source_ids":["S01","S02","S04","S05"]},"evidence_readiness":{"score":2,"rationale":"The proposed rig experiment is well bounded, but the candidate lacks a material specification, commercial benchmark, power analysis, analytical detection limits and aircraft-specific interface data.","source_ids":["S05","S06","S08"]},"safety_net_benefit":{"score":4,"rationale":"A removable cartridge with pressure-drop, activity and containment checks can fail closed through removal and replacement. Benefits depend on screening byproducts, contaminants and particles rather than crediting ozone disappearance alone.","source_ids":["S03","S05","S06"]},"scalability":{"score":4,"rationale":"Rotable components, multi-platform products, MRO procedures and commercial supply channels demonstrate scalability, though qualification remains aircraft-family and configuration specific.","source_ids":["S04","S05","S06"]}},"score_confidence":"MODERATE","costs":{"first_evidence":{"band_2026_usd":"50K_TO_250K","scope":"One existing laboratory's sealed single-pass duct-rig campaign with three active specimens, matched inert supports, blanks, up to 30 cycles, ozone instrumentation, pressure and temperature monitoring, particle capture and a bounded outlet-chemistry screen.","confidence":"LOW","assumptions":["An ozone-capable laboratory, ventilation, remote shutdown and core analytical instruments already exist.","This excludes catalyst discovery, capital construction, flight hardware and certification.","Sources establish relevant test variables but publish no comparable program price."],"source_ids":["S03","S05","S06","S08"]},"initial_deployment_startup":{"band_2026_usd":"1M_TO_5M","scope":"Candidate-specific cartridge engineering for one aircraft family: material down-selection, prototype tooling, environmental and contamination tests, pressure-drop and containment substantiation, safety assessment, certification planning and draft maintenance instructions, before fleet launch.","confidence":"LOW","assumptions":["A conventional retrofit location and one aircraft family are in scope.","No new environmental-control-system architecture or engine modification is required.","The band is a resource-equivalent estimate; no direct vendor quote was found."],"source_ids":["S01","S02","S04","S05","S06"]},"operational_launch":{"band_2026_usd":"5M_TO_25M","scope":"Complete qualification and design-approval program for one aircraft family, production-quality setup, initial rotable pool, approved MRO capability, training, logistics and a limited fleet introduction.","confidence":"LOW","assumptions":["Launch covers one design approval and a small initial fleet, not a multi-OEM rollout.","Flight or ground-aircraft integration evidence, configuration control and continued-airworthiness documentation are required.","Aircraft downtime and airline disruption are excluded."],"source_ids":["S01","S02","S04","S05"]},"annual_recurring":{"band_2026_usd":"1M_TO_5M","scope":"Illustrative annual support for a 100-aircraft single-family fleet: rotable inventory, scheduled removal, conversion and pressure-drop tests, regeneration or recoring, replacements, quality control, engineering surveillance and logistics.","confidence":"LOW","assumptions":["Fleet size is 100 aircraft and removal cadence resembles ordinary rotable maintenance.","The estimate excludes fuel-burn effects, unscheduled aircraft-on-ground events and major redesigns.","Published sources describe recurring maintenance but disclose no unit prices or service intervals suitable for costing."],"source_ids":["S05","S06","S07"]}},"verified_pipeline_gates":{"externally_supported_problem":{"status":"YES","reason":"Regulatory limits, FAA removal-efficiency examples and measured cabin ozone establish a real, consequential problem.","source_ids":["S01","S02","S03"]},"externally_credible_adopter_or_authorizer":{"status":"YES","reason":"FAA is the authorizer, while Airbus's selection of BASF and established airline/MRO workflows identify credible adopters and implementers.","source_ids":["S01","S02","S04","S05"]},"distinct_testable_incremental_claim":{"status":"NO","reason":"The candidate's architecture and regeneration logic are established, while no named material or quantitative superiority threshold distinguishes it from commercial and published comparators.","source_ids":["S05","S06","S07","S08"]},"bounded_next_evidence_step":{"status":"YES","reason":"The proposed non-flight study caps specimens and cycles, includes rig-only and inert comparators, randomization, regeneration and explicit safety and performance falsifiers. It would test candidate performance but would not by itself establish distinctiveness without a commercial comparator.","source_ids":["S05","S06","S08"]},"no_unresolved_safety_or_authority_stop":{"status":"YES","reason":"For the non-flight rig only, containment, monitoring, bypass and shutdown can bound risk; installation and flight use correctly remain outside laboratory authority. This gate does not authorize aircraft integration.","source_ids":["S01","S02","S03","S06"]},"credible_cost_scope_and_range":{"status":"UNCERTAIN","reason":"Phase scopes can be bounded, but the candidate omits material, rig availability, aircraft family, certification route, fleet size, service interval and vendor quotes. The bands are therefore low-confidence resource equivalents rather than externally priced estimates.","source_ids":["S01","S04","S05","S06"]}},"next_evidence_step":"Do not fund a generic converter reinvention. In ten business days, have an authorized aircraft design organization conduct a documented make/buy and claim-definition review against (1) a current BASF Deoxo/VOZC converter, (2) Pall's honeycomb or bead converter and regeneration/recoring practice, and (3) the 2024 Mn-oxo-zeolite structured catalyst. Require the proposer to name the catalyst, support, geometry, inlet envelope, off-aircraft regeneration procedure and at least one precommitted quantitative advantage. Falsify the research case if no such contrast survives or if an available approved product meets the stated objective. Only a newly specified claim should proceed to the proposed maximum-30-cycle rig assay, adding a current commercial converter as a comparator and killing the claim for absent attributable conversion, unacceptable pressure drop, shedding, thermal or outlet-chemistry effects, or failure to recover the precommitted fraction of initial activity.","blocking_evidence":["The catalyst, support, active loading, geometry and regeneration chemistry are unspecified.","No quantitative incremental threshold is stated against a current commercial aircraft ozone converter.","No candidate-specific repeated-cycle, contaminant, humidity, pressure-drop, shedding, byproduct or regenerated-activity data exist.","No aircraft-family interface, bleed-air transient distribution, installation location or certification basis is identified.","No design-organization, operator or authority has expressed need for this new cartridge rather than an existing approved converter or MRO upgrade.","No itemized laboratory, certification, production, MRO or fleet-cost evidence was found."],"research_disposition":"KNOWN_PRACTICE_DIFFUSION","world_novelty_boundary":"This assessment searched and opened exactly eight direct sources to test visible collision and feasibility. It establishes that the general aircraft catalytic ozone-converter and regeneration/recoring pathway is known and commercially practiced; it does not measure world novelty, patentability, freedom to operate, market size or realized impact. No comprehensive patent, non-English literature, proprietary OEM manual, supplier qualification record or fleet database search was performed.","arm":"COMPLETE_PROPOSAL_PORTFOLIO","candidate_version":0,"controller_recommendation":{"action":"STOP_DIFFUSION","repairable":false,"material_progress_observed":false,"progress_targets":["Reclassify the current intervention as adoption, procurement or maintenance diffusion of established aircraft ozone-converter practice.","For any separate future research proposal, specify a named catalyst/support/geometry and a quantified advantage over BASF, Pall and the 2024 Mn-oxo-zeolite result before requesting live testing.","Obtain an aircraft-family-specific design-authority pathway, interface envelope, commercial comparator and itemized vendor or laboratory costs before deployment consideration."],"reason":"The problem and adopter pull are strong, but the proposed solution is already established practice: aircraft catalytic ozone converters have been commercially used since 1983, current products are rotable and maintained through conversion and pressure-drop testing, poisoning is addressed by replacement, regeneration or recoring, and recent research directly demonstrates a regenerable structured aircraft catalyst. The candidate leaves no distinct incremental material or performance claim to evaluate, so it should move to known-practice adoption rather than remain in the innovation pipeline."},"proposal_index":2}