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        "title": "Limit unescorted SIDA access to trained and authorized individuals",
        "summary": "Use 49 CFR 1542.205 -- Airport Security to review this narrow operational decision without extending the source beyond its stated scope.",
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        "dse_recommendation": "Compare the observed state with the cited official source, document applicability and exceptions, and test any approved change with rollback safeguards.",
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            "name": "49 CFR 1542.205 -- Airport Security",
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        "content_html": "<p>Use this document to connect an official requirement or behavior to observable evidence: Limit unescorted SIDA access to trained and authorized individuals. Only the official source and traced locations below supply facts. Confirm applicability before acting.</p>\n<h2>Source fact:</h2>\n<p>The official <a href=\"https://www.ecfr.gov/current/title-49/section-1542.205\" target=\"_blank\" rel=\"noopener noreferrer\">49 CFR 1542.205 &#8212; Airport Security</a> from Transportation Security Administration via eCFR supports the following bounded statements:</p>\n<ul>\n<li>Under 49 CFR 1542, each airport operator required to establish a SIDA must establish and carry out measures to prevent the unauthorized presence and movement of individuals in the SIDA and must do the following: train each individual before granting unescorted access to the SIDA, as required in section 1542.213(b). The research record locates this support at <strong>49 CFR 1542.205(b)(3), read with 49 CFR 1542.205(b) (eCFR anchor p-1542.205(b)(3))</strong>.</li>\n<li>Under 49 CFR 1542, each airport operator required to establish a SIDA must establish and carry out measures to prevent the unauthorized presence and movement of individuals in the SIDA and must do the following: subject each individual to a criminal history records check as described in section 1542.209 before authorizing unescorted access to the SIDA. The research record locates this support at <strong>49 CFR 1542.205(b)(2), read with 49 CFR 1542.205(b) (eCFR anchor p-1542.205(b)(2))</strong>.</li>\n</ul>\n<p>These statements are the factual basis for this document. Do not extend them into a broader assurance. Review credentials, readers, controllers, panels, door hardware, access decisions, monitoring, and life-safety interfaces only where the source and recorded environment align.</p>\n<h2>What the source does not establish</h2>\n<p>Applies only to airport operators, tenants, personnel, and areas covered by 49 CFR part 1542 and the cited section. Confirm the TSA-approved security program and current directives; this is not legal advice or a universal access-control standard. Do not read the source as proof of implementation or permission to change production. Its guidance remains conditional on identity sources, DNS where used, time, networks, power, fire systems, monitoring, and authorized operators and the environment&#8217;s recorded constraints.</p>\n<h2>Applicability questions</h2>\n<ul>\n<li>For source statement 1 at <strong>49 CFR 1542.205(b)(3), read with 49 CFR 1542.205(b) (eCFR anchor p-1542.205(b)(3))</strong>, which observable configuration, record, or test can confirm applicability here?</li>\n<li>For source statement 2 at <strong>49 CFR 1542.205(b)(2), read with 49 CFR 1542.205(b) (eCFR anchor p-1542.205(b)(2))</strong>, which observable configuration, record, or test can confirm applicability here?</li>\n<li>Which owner can attest to the recorded state of credentials, readers, controllers, panels, door hardware, access decisions, monitoring, and life-safety interfaces, including exceptions?</li>\n<li>What baseline for identity sources, DNS where used, time, networks, power, fire systems, monitoring, and authorized operators must accompany the source-specific observation?</li>\n<li>Which success, stop, and escalation criteria are written before testing begins?</li>\n</ul>\n<h2>DSE recommendation:</h2>\n<p>DSE recommends using the cited source as the evidence anchor for this decision. Start with applicability, then compare the observed state with the cited source. Record the source location, examined part of credentials, readers, controllers, panels, door hardware, access decisions, monitoring, and life-safety interfaces, observed and expected states, owner, and reason for deviation.</p>\n<p>If the review warrants change, use a bounded implementation with prerequisites, test population, monitoring, abort criteria, and a rehearsed reversal. Sequence checks for identity sources, DNS where used, time, networks, power, fire systems, monitoring, and authorized operators and sanitize protected material before retention.</p>\n<h2>Verification and evidence</h2>\n<p>A reviewer should be able to retrace the decision from <strong>49 CFR 1542.205(b)(3), read with 49 CFR 1542.205(b) (eCFR anchor p-1542.205(b)(3))</strong>; <strong>49 CFR 1542.205(b)(2), read with 49 CFR 1542.205(b) (eCFR anchor p-1542.205(b)(2))</strong> through approved configuration exports, access-event tests, controller state, door inspections, alarm handling, and exception records. Record what was collected, where, when, by whom, and which system or role it represents.</p>\n<p>Record the decision even when no change is made, including uncertainty and the next trigger. Use safe testing conditions for disruptive work, preserve rollback proof, and revisit the conclusion after relevant platform, dependency, vendor, or ownership changes.</p>\n<h2>Official references</h2>\n<ul>\n<li><a href=\"https://www.ecfr.gov/current/title-49/section-1542.205\" target=\"_blank\" rel=\"noopener noreferrer\">49 CFR 1542.205 &#8212; Airport Security</a> — Transportation Security Administration via eCFR</li>\n</ul>",
        "content_text": "Use this document to connect an official requirement or behavior to observable evidence: Limit unescorted SIDA access to trained and authorized individuals. Only the official source and traced locations below supply facts. Confirm applicability before acting.\nSource fact:\nThe official 49 CFR 1542.205 — Airport Security from Transportation Security Administration via eCFR supports the following bounded statements:\n\nUnder 49 CFR 1542, each airport operator required to establish a SIDA must establish and carry out measures to prevent the unauthorized presence and movement of individuals in the SIDA and must do the following: train each individual before granting unescorted access to the SIDA, as required in section 1542.213(b). The research record locates this support at 49 CFR 1542.205(b)(3), read with 49 CFR 1542.205(b) (eCFR anchor p-1542.205(b)(3)).\nUnder 49 CFR 1542, each airport operator required to establish a SIDA must establish and carry out measures to prevent the unauthorized presence and movement of individuals in the SIDA and must do the following: subject each individual to a criminal history records check as described in section 1542.209 before authorizing unescorted access to the SIDA. The research record locates this support at 49 CFR 1542.205(b)(2), read with 49 CFR 1542.205(b) (eCFR anchor p-1542.205(b)(2)).\n\nThese statements are the factual basis for this document. Do not extend them into a broader assurance. Review credentials, readers, controllers, panels, door hardware, access decisions, monitoring, and life-safety interfaces only where the source and recorded environment align.\nWhat the source does not establish\nApplies only to airport operators, tenants, personnel, and areas covered by 49 CFR part 1542 and the cited section. Confirm the TSA-approved security program and current directives; this is not legal advice or a universal access-control standard. Do not read the source as proof of implementation or permission to change production. Its guidance remains conditional on identity sources, DNS where used, time, networks, power, fire systems, monitoring, and authorized operators and the environment’s recorded constraints.\nApplicability questions\n\nFor source statement 1 at 49 CFR 1542.205(b)(3), read with 49 CFR 1542.205(b) (eCFR anchor p-1542.205(b)(3)), which observable configuration, record, or test can confirm applicability here?\nFor source statement 2 at 49 CFR 1542.205(b)(2), read with 49 CFR 1542.205(b) (eCFR anchor p-1542.205(b)(2)), which observable configuration, record, or test can confirm applicability here?\nWhich owner can attest to the recorded state of credentials, readers, controllers, panels, door hardware, access decisions, monitoring, and life-safety interfaces, including exceptions?\nWhat baseline for identity sources, DNS where used, time, networks, power, fire systems, monitoring, and authorized operators must accompany the source-specific observation?\nWhich success, stop, and escalation criteria are written before testing begins?\n\nDSE recommendation:\nDSE recommends using the cited source as the evidence anchor for this decision. Start with applicability, then compare the observed state with the cited source. Record the source location, examined part of credentials, readers, controllers, panels, door hardware, access decisions, monitoring, and life-safety interfaces, observed and expected states, owner, and reason for deviation.\nIf the review warrants change, use a bounded implementation with prerequisites, test population, monitoring, abort criteria, and a rehearsed reversal. Sequence checks for identity sources, DNS where used, time, networks, power, fire systems, monitoring, and authorized operators and sanitize protected material before retention.\nVerification and evidence\nA reviewer should be able to retrace the decision from 49 CFR 1542.205(b)(3), read with 49 CFR 1542.205(b) (eCFR anchor p-1542.205(b)(3)); 49 CFR 1542.205(b)(2), read with 49 CFR 1542.205(b) (eCFR anchor p-1542.205(b)(2)) through approved configuration exports, access-event tests, controller state, door inspections, alarm handling, and exception records. Record what was collected, where, when, by whom, and which system or role it represents.\nRecord the decision even when no change is made, including uncertainty and the next trigger. Use safe testing conditions for disruptive work, preserve rollback proof, and revisit the conclusion after relevant platform, dependency, vendor, or ownership changes.\nOfficial references\n\n49 CFR 1542.205 — Airport Security — Transportation Security Administration via eCFR",
        "content_markdown": "Use this document to connect an official requirement or behavior to observable evidence: Limit unescorted SIDA access to trained and authorized individuals. Only the official source and traced locations below supply facts. Confirm applicability before acting.\n\n## Source fact:\n\nThe official [49 CFR 1542.205 — Airport Security](https://www.ecfr.gov/current/title-49/section-1542.205) from Transportation Security Administration via eCFR supports the following bounded statements:\n\n- Under 49 CFR 1542, each airport operator required to establish a SIDA must establish and carry out measures to prevent the unauthorized presence and movement of individuals in the SIDA and must do the following: train each individual before granting unescorted access to the SIDA, as required in section 1542.213(b). The research record locates this support at 49 CFR 1542.205(b)(3), read with 49 CFR 1542.205(b) (eCFR anchor p-1542.205(b)(3)).\n\n- Under 49 CFR 1542, each airport operator required to establish a SIDA must establish and carry out measures to prevent the unauthorized presence and movement of individuals in the SIDA and must do the following: subject each individual to a criminal history records check as described in section 1542.209 before authorizing unescorted access to the SIDA. The research record locates this support at 49 CFR 1542.205(b)(2), read with 49 CFR 1542.205(b) (eCFR anchor p-1542.205(b)(2)).\n\nThese statements are the factual basis for this document. Do not extend them into a broader assurance. Review credentials, readers, controllers, panels, door hardware, access decisions, monitoring, and life-safety interfaces only where the source and recorded environment align.\n\n## What the source does not establish\n\nApplies only to airport operators, tenants, personnel, and areas covered by 49 CFR part 1542 and the cited section. Confirm the TSA-approved security program and current directives; this is not legal advice or a universal access-control standard. Do not read the source as proof of implementation or permission to change production. Its guidance remains conditional on identity sources, DNS where used, time, networks, power, fire systems, monitoring, and authorized operators and the environment’s recorded constraints.\n\n## Applicability questions\n\n- For source statement 1 at 49 CFR 1542.205(b)(3), read with 49 CFR 1542.205(b) (eCFR anchor p-1542.205(b)(3)), which observable configuration, record, or test can confirm applicability here?\n\n- For source statement 2 at 49 CFR 1542.205(b)(2), read with 49 CFR 1542.205(b) (eCFR anchor p-1542.205(b)(2)), which observable configuration, record, or test can confirm applicability here?\n\n- Which owner can attest to the recorded state of credentials, readers, controllers, panels, door hardware, access decisions, monitoring, and life-safety interfaces, including exceptions?\n\n- What baseline for identity sources, DNS where used, time, networks, power, fire systems, monitoring, and authorized operators must accompany the source-specific observation?\n\n- Which success, stop, and escalation criteria are written before testing begins?\n\n## DSE recommendation:\n\nDSE recommends using the cited source as the evidence anchor for this decision. Start with applicability, then compare the observed state with the cited source. Record the source location, examined part of credentials, readers, controllers, panels, door hardware, access decisions, monitoring, and life-safety interfaces, observed and expected states, owner, and reason for deviation.\n\nIf the review warrants change, use a bounded implementation with prerequisites, test population, monitoring, abort criteria, and a rehearsed reversal. Sequence checks for identity sources, DNS where used, time, networks, power, fire systems, monitoring, and authorized operators and sanitize protected material before retention.\n\n## Verification and evidence\n\nA reviewer should be able to retrace the decision from 49 CFR 1542.205(b)(3), read with 49 CFR 1542.205(b) (eCFR anchor p-1542.205(b)(3)); 49 CFR 1542.205(b)(2), read with 49 CFR 1542.205(b) (eCFR anchor p-1542.205(b)(2)) through approved configuration exports, access-event tests, controller state, door inspections, alarm handling, and exception records. Record what was collected, where, when, by whom, and which system or role it represents.\n\nRecord the decision even when no change is made, including uncertainty and the next trigger. Use safe testing conditions for disruptive work, preserve rollback proof, and revisit the conclusion after relevant platform, dependency, vendor, or ownership changes.\n\n## Official references\n\n- [49 CFR 1542.205 — Airport Security](https://www.ecfr.gov/current/title-49/section-1542.205) — Transportation Security Administration via eCFR"
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                "description": "Use 49 CFR 1542.205 -- Airport Security to review this narrow operational decision without extending the source beyond its stated scope.",
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                "articleBody": "Use this document to connect an official requirement or behavior to observable evidence: Limit unescorted SIDA access to trained and authorized individuals. Only the official source and traced locations below supply facts. Confirm applicability before acting.\nSource fact:\nThe official 49 CFR 1542.205 — Airport Security from Transportation Security Administration via eCFR supports the following bounded statements:\n\nUnder 49 CFR 1542, each airport operator required to establish a SIDA must establish and carry out measures to prevent the unauthorized presence and movement of individuals in the SIDA and must do the following: train each individual before granting unescorted access to the SIDA, as required in section 1542.213(b). The research record locates this support at 49 CFR 1542.205(b)(3), read with 49 CFR 1542.205(b) (eCFR anchor p-1542.205(b)(3)).\nUnder 49 CFR 1542, each airport operator required to establish a SIDA must establish and carry out measures to prevent the unauthorized presence and movement of individuals in the SIDA and must do the following: subject each individual to a criminal history records check as described in section 1542.209 before authorizing unescorted access to the SIDA. The research record locates this support at 49 CFR 1542.205(b)(2), read with 49 CFR 1542.205(b) (eCFR anchor p-1542.205(b)(2)).\n\nThese statements are the factual basis for this document. Do not extend them into a broader assurance. Review credentials, readers, controllers, panels, door hardware, access decisions, monitoring, and life-safety interfaces only where the source and recorded environment align.\nWhat the source does not establish\nApplies only to airport operators, tenants, personnel, and areas covered by 49 CFR part 1542 and the cited section. Confirm the TSA-approved security program and current directives; this is not legal advice or a universal access-control standard. Do not read the source as proof of implementation or permission to change production. Its guidance remains conditional on identity sources, DNS where used, time, networks, power, fire systems, monitoring, and authorized operators and the environment’s recorded constraints.\nApplicability questions\n\nFor source statement 1 at 49 CFR 1542.205(b)(3), read with 49 CFR 1542.205(b) (eCFR anchor p-1542.205(b)(3)), which observable configuration, record, or test can confirm applicability here?\nFor source statement 2 at 49 CFR 1542.205(b)(2), read with 49 CFR 1542.205(b) (eCFR anchor p-1542.205(b)(2)), which observable configuration, record, or test can confirm applicability here?\nWhich owner can attest to the recorded state of credentials, readers, controllers, panels, door hardware, access decisions, monitoring, and life-safety interfaces, including exceptions?\nWhat baseline for identity sources, DNS where used, time, networks, power, fire systems, monitoring, and authorized operators must accompany the source-specific observation?\nWhich success, stop, and escalation criteria are written before testing begins?\n\nDSE recommendation:\nDSE recommends using the cited source as the evidence anchor for this decision. Start with applicability, then compare the observed state with the cited source. Record the source location, examined part of credentials, readers, controllers, panels, door hardware, access decisions, monitoring, and life-safety interfaces, observed and expected states, owner, and reason for deviation.\nIf the review warrants change, use a bounded implementation with prerequisites, test population, monitoring, abort criteria, and a rehearsed reversal. Sequence checks for identity sources, DNS where used, time, networks, power, fire systems, monitoring, and authorized operators and sanitize protected material before retention.\nVerification and evidence\nA reviewer should be able to retrace the decision from 49 CFR 1542.205(b)(3), read with 49 CFR 1542.205(b) (eCFR anchor p-1542.205(b)(3)); 49 CFR 1542.205(b)(2), read with 49 CFR 1542.205(b) (eCFR anchor p-1542.205(b)(2)) through approved configuration exports, access-event tests, controller state, door inspections, alarm handling, and exception records. Record what was collected, where, when, by whom, and which system or role it represents.\nRecord the decision even when no change is made, including uncertainty and the next trigger. Use safe testing conditions for disruptive work, preserve rollback proof, and revisit the conclusion after relevant platform, dependency, vendor, or ownership changes.\nOfficial references\n\n49 CFR 1542.205 — Airport Security — Transportation Security Administration via eCFR",
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