{"id":"F2006B07990","name":"Airworthiness Directives 2004 - Revocation and Remaking - Propellers - Variable Pitch - Hamilton Standard","slug":"airworthiness-directives-2004-revocation-and-remaking-propellers-variable-pitch-hamilton-standard","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":115042,"registerId":"commonwealth-F2006B07990-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 - Propellers - Variable Pitch - Hamilton Standard","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\nPropellers - Variable Pitch - Hamilton Standard\n\nAD Name AD Number\n\nModel 23260 and 43E-60 Low Pitch Stop Assembly - Modification AD/PHS/1\n\nModel 23260, 43E-60 and 43D-50 Reverse Solenoid Valve - Modification AD/PHS/2 Amdt 1\n\nModel 23260 and 43E-60 Low Pitch Stop Assembly - Inspection AD/PHS/3\n\nCANCELLED - CANCELLED AD/PHS/4\n\nBlades 6800, 6900 and 7000 Series Blade Face Alignment - Inspection AD/PHS/5\n\nModel 23e-50, Barrel Bolt Boss - Modification AD/PHS/6\n\nModel 23E-50 Blade Seal - CANCELLED AD/PHS/7\n\nCounterweight Bearing Shaft - Inspection AD/PHS/8\n\nModel 54H60 Pitch Lock Regulator Assembly - Inspection and Modification AD/PHS/9\n\nHydromatic Aluminium Propeller Blades AD/PHS/10 Amdt 1\n\nBlade Retaining Rings AD/PHS/11 Amdt 1\n\nPacific 6533A Propeller Blade AD/PHS/12\n\nHub Rework AD/PHS/13\n\nTitanium Nitrided Transfer Tube AD/PHS/14 Amdt 2\n\nServo Ballscrew Internal Spline Wear AD/PHS/15 Amdt 5\n\nBlade Retaining Rings AD/PHS/16\n\nBlade Spar Taper Bore - CANCELLED AD/PHS/17 Admt\n\nHub Cracking AD/PHS/18 Amdt 1\n\nPropeller Blades - CANCELLED AD/PHS/19 Amdt 1\n\nPropeller Blade Shanks AD/PHS/20 Amdt 2\n\nBlade Spar Taper Bore AD/PHS/21 Amdt 1\n\nPropeller Control System Components AD/PHS/22","sortOrder":0}],"analysis":{"flash_summary_failed":{"failed":true,"reason":"A positive credit balance is required for all requests, including BYOK, so fallback providers remain available. Add credits at https://vercel.com/d?to=%2F%5Bteam%5D%2F%7E%2Fai%3Fmodal%3Dtop-up to continue.","source":"analysis-cron"},"kimi_summary":{"content_quality":"ok","complexity_score":3,"scope_assessment":{"changed":false,"description":"This instrument maintains identical scope to the original directives. It is purely a procedural remaking exercise with no expansion of subject matter, affected parties, or regulatory requirements."},"complexity_factors":["Short, single-purpose instrument (under 2 pages)","No defined terms section — relies on external understanding of \"Airworthiness Directive\" and CASA regulatory framework","Simple binary structure: (a) revoke, (b) remake","Schedule 1 is a straightforward table listing 22 ADs with minimal descriptive detail","Cross-reference to subregulation 39.001(1) of Civil Aviation Safety Regulations 1998 (single, clear authority provision)","No conditional logic, exceptions, or nested provisions","Note clarifies no substantive change, reducing interpretive burden"],"plain_english_summary":"David Villiers (CASA) revoked 22 existing Airworthiness Directives for Hamilton Standard variable-pitch propellers and re-made them as new, separate instruments. This is an administrative refresh: the directives are reproduced \"in exactly the same form,\" so technical requirements remain unchanged.\n\nIt affects owners, operators, and maintainers of aircraft with those Hamilton Standard propellers, ensuring the safety rules remain current and legally enforceable."},"flash_summary":{"complexity_score":2,"scope_assessment":{"changed":false,"description":"The instrument does not change substantive scope or obligations. It revokes the listed Airworthiness Directives and remakes each as a separate instrument in the same form as the latest published editions (see clauses (a)–(b) and Note). The Schedule identifies the specific Hamilton Standard propeller Directives subject to this administrative reissuance."},"complexity_factors":["Administrative action only: instrument revokes and re‑makes existing ADs without changing their substantive content (see Note).","Clear statutory authority: exercise of power under subregulation 39.001(1) provides a single, straightforward legal basis.","Number of listed ADs: Schedule 1 enumerates many separate Directives, creating modest administrative tracking work for regulators and affected parties.","No new technical requirements: because each AD is remade in the same form, legal complexity and interpretive risk are low.","Compliance burden unchanged but relabelling risk: operators must monitor reissued instruments to ensure they rely on the current instrument (clauses (a)–(b), Schedule 1)."],"plain_english_summary":"This instrument, made under subregulation 39.001(1) of the Civil Aviation Safety Regulations 1998, revokes the Airworthiness Directives listed in Schedule 1 and re‑makes each one as a separate instrument (see clauses (a) and (b)). The attached Note states each re‑made Directive is identical to its latest published edition. It affects owners, operators and maintenance organisations responsible for aircraft fitted with the listed Hamilton Standard variable‑pitch propellers by preserving existing compliance obligations while changing the legal/administrative form of those Directives."}},"importantCases":[],"_links":{"self":"/api/acts/airworthiness-directives-2004-revocation-and-remaking-propellers-variable-pitch-hamilton-standard","history":"/api/acts/airworthiness-directives-2004-revocation-and-remaking-propellers-variable-pitch-hamilton-standard/history","analysis":"/api/acts/airworthiness-directives-2004-revocation-and-remaking-propellers-variable-pitch-hamilton-standard/analysis","conflicts":"/api/acts/airworthiness-directives-2004-revocation-and-remaking-propellers-variable-pitch-hamilton-standard/conflicts","importantCases":"/api/acts/airworthiness-directives-2004-revocation-and-remaking-propellers-variable-pitch-hamilton-standard/important-cases","documents":"/api/acts/airworthiness-directives-2004-revocation-and-remaking-propellers-variable-pitch-hamilton-standard/documents"}}