{"id":"F2006B06110","name":"AD/PC-12/8 Amdt 1 - Executive Cabin Layout","slug":"ad-pc-12-8-amdt-1-executive-cabin-layout","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":46863,"registerId":"commonwealth-F2006B06110-current","compilationNumber":null,"startDate":"2026-04-02","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/PC-12/8 Amdt 1 - Executive Cabin Layout","content":"COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 \\- 105 CIVIL AVIATION SAFETY AUTHORITY\n\nSCHEDULE OF AIRWORTHINESS DIRECTIVES\n\n![](image.001.png)  \nPilatus PC-12 Series Aeroplanes\n\nAD/PC-12/8\n\nAmdt 1\n\n  \nExecutive Cabin Layout 9/98\n\nApplicability: Lavatory Wall Modification: All PC-12 and PC-12/45 aircraft, MSN 101 up to and including MSN 180, which have an executive cabin layout.\n\nPassenger Seat Configuration Modifications: All PC-12 and PC-12/45 aircraft, MSN 101 up to and including MSN 171, which have an executive cabin layout.\n\nRequirement: Modify in accordance with Pilatus Aircraft Service Bulletin (SB) 25-003 Revision 1.\n\nNote: FOCA Switzerland AD HB 97-249A refers.\n\nCompliance: Unless already accomplished in accordance with SB 25-003, before 13 September 1998.\n\nThis amendment becomes effective on 13 August 1998.\n\nBackground: In order to comply with the Head Injury Criteria requirements of FAR 23.562 (c)(5), this Directive requires modification of the executive cabin type layout.\n\nAmendment 1 is issued in response to revision of the FOCA AD which introduces a revised Requirement document which clarifies certain requirements.\n\nThe original issue of this airworthiness directive became effective on 2 July 1997.","sortOrder":0}],"analysis":{"kimi_summary":{"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This amendment remains tightly scoped to its original purpose — mandating specific cabin safety modifications for a limited subset of PC-12 aircraft. The amendment merely clarifies existing requirements rather than expanding the directive's reach to new aircraft types, systems, or operational contexts."},"complexity_factors":["Very short document (under 300 words)","Only 2 defined applicability categories (lavatory wall vs passenger seat modifications)","Single compliance requirement with clear deadline","No nested exceptions or conditional logic","Minimal cross-referencing (only one referenced service bulletin and one foreign authority document)","Straightforward amendment purpose (clarification only, no substantive change to requirements)"],"plain_english_summary":"This CASA Airworthiness Directive mandates that operators of certain Pilatus PC‑12 executive‑layout aircraft (serials 101–180 for lavatory walls; 101–171 for passenger seats) modify cabin fittings to meet Head Injury Criteria. The amendments update a 1997 requirement using Swiss technical guidance. Affected aircraft must comply by 13 September 1998 — noncompliance grounds the aircraft unairworthy for Australian operations."},"flash_summary":{"complexity_score":3,"scope_assessment":{"changed":false,"description":"Amendment 1 responds to a revised FOCA AD and \"clarifies certain requirements\" in the Requirement document rather than expanding applicability or adding new obligations. The directive continues to require the same SB-based modifications for the same MSN ranges and retains the original compliance obligation and deadlines."},"complexity_factors":["Narrow applicability defined by manufacturer serial numbers (MSN 101–180 for lavatory wall; MSN 101–171 for seat changes) — requires accurate fleet identification.","Two distinct modification types (lavatory wall and passenger seat configuration) referenced in one directive, increasing coordination needs.","Normative external reference to Pilatus Service Bulletin SB 25-003 Revision 1 — compliance requires obtaining and following that document.","Cross-reference to foreign regulator (FOCA Switzerland AD HB 97-249A) and stated link to FAR 23.562(c)(5) Head Injury Criteria adds multilayered technical standards to satisfy.","Fixed compliance deadline (13 September 1998) creates a time-constrained implementation and potential scheduling costs.","Amendment clarifies requirement wording rather than introducing new procedures, reducing substantive regulatory discretion but raising interpretation/administration tasks where prior text was ambiguous."],"plain_english_summary":"Requires Pilatus PC-12 and PC-12/45 aeroplanes with executive cabin layouts (specified MSN ranges) to be modified per Pilatus Service Bulletin SB 25-003 Revision 1 — changes to lavatory wall and passenger seat configuration. Operators/owners must comply by 13 September 1998; the directive takes effect 13 August 1998. The stated purpose is to meet FAR 23.562(c)(5) Head Injury Criteria, and Amendment 1 clarifies the requirement wording following a Swiss (FOCA) AD. This imposes a direct modification cost and administrative compliance burden on affected aircraft owners."}},"importantCases":[],"_links":{"self":"/api/acts/ad-pc-12-8-amdt-1-executive-cabin-layout","history":"/api/acts/ad-pc-12-8-amdt-1-executive-cabin-layout/history","analysis":"/api/acts/ad-pc-12-8-amdt-1-executive-cabin-layout/analysis","conflicts":"/api/acts/ad-pc-12-8-amdt-1-executive-cabin-layout/conflicts","importantCases":"/api/acts/ad-pc-12-8-amdt-1-executive-cabin-layout/important-cases","documents":"/api/acts/ad-pc-12-8-amdt-1-executive-cabin-layout/documents"}}