{"id":"F2006B07978","name":"Airworthiness Directives 2004 - Revocation and Remaking - Pratt and Whitney Turbine Engines - JT8D-200 Series","slug":"airworthiness-directives-2004-revocation-and-remaking-pratt-and-whitney-turbine-engines-jt8d-200-ser","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":115026,"registerId":"commonwealth-F2006B07978-current","compilationNumber":null,"startDate":"2026-04-03","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"Airworthiness Directives 2004 - Revocation and Remaking - Pratt and Whitney Turbine Engines - JT8D-200 Series","content":"Airworthiness Directives 2004\n\nI, DAVID ALAN VILLIERS, delegate of the Civil Aviation Safety\n\nAuthority, acting under subregulation 39.001 (1) of the Civil\n\nAviation Safety Regulations 1998:\n\n(a) revoke the Airworthiness Directives mentioned in\n\nSchedule 1; and\n\n(b) make, as separate instruments, each Airworthiness\n\nDirective mentioned in Schedule 1 and attached.\n\n![](image.001.png)\n\nDavid Villiers\n\nDelegate of the Civil Aviation Safety Authority\n\n20 December 2004\n\nNote: Each attached Airworthiness Directive is being re-made in exactly the\n\nsame form as appears in the latest published edition of the Directive.\n\n  \nSchedule 1 Revocation and Remaking of\n\nAirworthiness Directives\n\nPratt and Whitney Turbine Engines - JT8D-200 Series\n\nAD Name AD Number\n\nLife Limited Components - CANCELLED AD/JT8D-200/1\n\nNumber 4 and 5 Bearing Compartment Oil Fires AD/JT8D-200/2\n\nLow Pressure Turbine Anti-Rotation Pins AD/JT8D-200/3\n\nNumber 4-1/2 Bearing Spacer AD/JT8D-200/4","sortOrder":0}],"analysis":{"flash_summary":{"complexity_score":2,"scope_assessment":{"changed":false,"description":"The instrument revokes listed Airworthiness Directives and remakes them in separate attached instruments \"in exactly the same form as appears in the latest published edition of the Directive\" (Note). Because the remade Directives are stated to be identical to their latest published editions, this act does not change the substantive scope or requirements of those Directives; it changes only the form and placement of the instruments (administrative re-issuance)."},"complexity_factors":["Administrative re-issuance of existing directives rather than substantive regulatory change","Statutory delegation basis (action taken under subregulation 39.001(1))","Multiple Airworthiness Directives listed (four entries in Schedule 1)","One listed item explicitly labelled as CANCELLED (creates a record-status consideration)","Substantive content of ADs not included in this instrument; attachments must be consulted for operational detail"],"plain_english_summary":"What this instrument does (mechanically)\n\n- A delegate of the Civil Aviation Safety Authority (CASA), acting under subregulation 39.001(1) of the Civil Aviation Safety Regulations 1998, revokes the Airworthiness Directives listed in Schedule 1 and re-issues each of those Directives as separate instruments attached to this instrument (see Schedule 1 and the Note).\n- The Schedule lists four items under the heading \"Pratt and Whitney Turbine Engines - JT8D-200 Series\":\n  - \"Life Limited Components - CANCELLED AD/JT8D-200/1\"\n  - \"Number 4 and 5 Bearing Compartment Oil Fires AD/JT8D-200/2\"\n  - \"Low Pressure Turbine Anti-Rotation Pins AD/JT8D-200/3\"\n  - \"Number 4-1/2 Bearing Spacer AD/JT8D-200/4\"\n- The instrument expressly states that each attached Airworthiness Directive is being re-made \"in exactly the same form as appears in the latest published edition of the Directive.\" (Note.)\n\nWho this affects\n\n- The Directives listed concern Pratt & Whitney turbine engines of the JT8D-200 series (see heading for Schedule 1). The legal effect of this instrument is to replace the previously listed Airworthiness Directives with separately issued instruments attached to this instrument; any person or organisation required to comply with those Airworthiness Directives will now find those obligations recorded in the newly made separate instruments.\n\nWhy it matters (practical consequences and mechanics)\n\n- This is an administrative re-issuance: it removes the previously published instrument(s) and re-creates the same requirements as separate, attached instruments. Because the Note states the remade Directives are identical to the latest published editions, the substantive technical or compliance requirements remain unchanged by this instrument; the change is to how the Directives are issued and recorded.\n\nCosts, incentives, and compliance burden\n\n- The instrument itself does not change substantive obligations or technical requirements; therefore any compliance costs originate from the content of each underlying Airworthiness Directive (the attached instruments). Those who must comply with the ADs bear any costs imposed by the ADs. This instrument changes where and how the ADs are recorded (as separate attached instruments) which may impose minor administrative tasks for record-keeping, cross-referencing, or citation.\n\nDiscretion, implementation risk, and trade-offs\n\n- The action is taken by a CASA delegate under an express subregulatory power (subregulation 39.001(1)). The Note commits to reproducing the Directives in exactly the same form as the latest published editions, which limits scope for substantive change at this step. Practical risks are therefore mainly administrative: ensuring the attachments, references, and any external citations or manuals correctly point to the re-made instruments. The Schedule includes one entry explicitly labelled \"CANCELLED\" (AD/JT8D-200/1); if the latest published edition records that cancellation, the re-made instrument will replicate that status.\n\nWhere to look next\n\n- To see the substantive technical requirements, costs, or mandatory actions, consult the separately attached Airworthiness Directives (the instrument remakes referred to in Schedule 1)."},"kimi_summary":{"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"The instrument performs exactly the function described in its title — revoking and remaking specific airworthiness directives. The scope has not expanded beyond the four listed directives for the JT8D-200 engine series. The note confirms the substantive content is unchanged, indicating no mission creep."},"complexity_factors":["Very short instrument (under 300 words)","Only 4 substantive items in Schedule 1, presented in simple table format","Single operative provision with straightforward (a) and (b) structure","No defined terms requiring interpretation","No cross-references to other legislation beyond the enabling regulation (subregulation 39.001(1))","No conditional logic or exceptions — the revocation and remaking is absolute and unconditional","Note explicitly states content is unchanged, removing interpretive burden"],"plain_english_summary":"This is a technical aviation safety instrument that **revokes and immediately remakes four specific airworthiness directives** for a particular type of aircraft engine.\n\n**What it does:**\n- **Revokes** four existing safety rules (called \"Airworthiness Directives\") that apply to Pratt & Whitney JT8D-200 series turbine engines — the engines used in older Boeing 727 and 737 aircraft\n- **Remakes** those same four directives as **separate legal instruments**, keeping their content exactly the same as before\n\n**The four safety rules cover:**\n- **AD/JT8D-200/1**: Life-limited components (now cancelled — no longer applies)\n- **AD/JT8D-200/2**: Preventing oil fires in the number 4 and 5 bearing compartments\n- **AD/JT8D-200/3**: Low pressure turbine anti-rotation pins\n- **AD/JT8D-200/4**: Number 4-1/2 bearing spacer\n\n**Who it affects:**\n- Airlines and operators flying aircraft with JT8D-200 engines\n- Maintenance organisations servicing these engines\n- The Civil Aviation Safety Authority (CASA) itself\n\n**Why it matters:**\nAirworthiness Directives are **legally binding safety orders**. They require specific inspections, repairs, or modifications to prevent accidents. This instrument is essentially **housekeeping** — CASA is updating the legal form of these rules without changing their substance. This ensures the directives remain valid and enforceable under current regulations, maintaining safety standards for engines that power thousands of flights."}},"importantCases":[],"_links":{"self":"/api/acts/airworthiness-directives-2004-revocation-and-remaking-pratt-and-whitney-turbine-engines-jt8d-200-ser","history":"/api/acts/airworthiness-directives-2004-revocation-and-remaking-pratt-and-whitney-turbine-engines-jt8d-200-ser/history","analysis":"/api/acts/airworthiness-directives-2004-revocation-and-remaking-pratt-and-whitney-turbine-engines-jt8d-200-ser/analysis","conflicts":"/api/acts/airworthiness-directives-2004-revocation-and-remaking-pratt-and-whitney-turbine-engines-jt8d-200-ser/conflicts","importantCases":"/api/acts/airworthiness-directives-2004-revocation-and-remaking-pratt-and-whitney-turbine-engines-jt8d-200-ser/important-cases","documents":"/api/acts/airworthiness-directives-2004-revocation-and-remaking-pratt-and-whitney-turbine-engines-jt8d-200-ser/documents"}}