{"id":"F2006B05682","name":"AD/PA-30/8 - Vmc Placard - Revision","slug":"ad-pa-30-8-vmc-placard-revision","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":135442,"registerId":"commonwealth-F2006B05682-current","compilationNumber":null,"startDate":"2026-04-03","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/PA-30/8 - Vmc Placard - Revision","content":"---\nmeta-content-style-type: text/css\nmeta-content-type: application/xhtml+xml; charset=utf-8\nmeta-generator: Aspose.Words for .NET 22.10.0\n---\n\n?xml version=\"1.0\" encoding=\"utf-8\" standalone=\"no\"?>\n\nCOMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 105 CIVIL AVIATION SAFETY AUTHORITY\n\nSCHEDULE OF AIRWORTHINESS DIRECTIVES\n\n \n\n![](image.001.png)  Piper PA-30 & 39 (Twin Comanche) Series Aeroplanes\n\n \n\nAD/PA-30/8 Vmc Placard - Revision 1/70\n\nApplicability: Model PA-30 not incorporating Piper Kit 760 368 (ref. SL 552).\n\n \n\nRequirement: Change the existing Vmc placard or install a new placard to reflect the following: “MINIMUM SINGLE ENGINE CONTROL SPEED 80 Kts. IAS”.\n\nNote: The work required here-in may bve performed and certified by the pilot or owner. Minimum lettering size shall not be less than that of the existing placard.\n\n \n\nCompliance: Before further flight after 26 November 1969.\n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n","sortOrder":0}],"analysis":{"flash_summary":{"complexity_score":2,"scope_assessment":{"changed":true,"description":"This instrument revises the required Vmc placard wording to read explicitly as “MINIMUM SINGLE ENGINE CONTROL SPEED 80 Kts. IAS” and applies only to PA-30 aircraft not fitted with Piper Kit 760 368, thereby altering the placard content and restricting applicability compared with the prior placard requirement. (Applicability; Requirement)"},"complexity_factors":["Single, narrowly prescriptive action (change or install a placard with specified text). (Requirement)","Clear and immediate deadline reduces procedural complexity. (Compliance)","Limited applicability to a single aircraft model and to those without a specific kit. (Applicability)","Permits pilot/owner to perform and certify the work, reducing need for external approvals or maintenance organisations. (Note)","Minor ambiguity only around interpretation of 'existing placard' size and exact placement, which could require practical judgement. (Note)"],"plain_english_summary":"Owners/operators of Piper PA-30 aeroplanes (unless fitted with Piper Kit 760 368) must change the Vmc placard to read exactly: “MINIMUM SINGLE ENGINE CONTROL SPEED 80 Kts. IAS.” This prescriptive update applies to affected aircraft cockpit placarding.\n\nThe placard may be replaced or revised with lettering at least as large as the existing placard, may be performed and certified by the pilot or owner, and must be completed before the aircraft’s next flight after 26 November 1969. Costs and burden are minimal."},"kimi_summary":{"content_quality":"ok","complexity_score":1,"scope_assessment":{"changed":false,"description":"This is a discrete, targeted safety directive from 1970 addressing a specific placard requirement for one aircraft model. There is no indication of scope creep; it remains a narrow technical instruction."},"complexity_factors":["Single, specific requirement with no conditional logic","No defined terms section","No cross-references to other legislation (only an internal reference to a service letter for applicability)","Extremely short document (approximately 150 words of substantive content)","Simple binary applicability test (whether Kit 760 368 is installed or not)","Single compliance date with no exceptions or extensions"],"plain_english_summary":"**What this is:** This is an Airworthiness Directive (AD) — essentially a mandatory safety notice issued by Australia's Civil Aviation Safety Authority (CASA) for specific aircraft.\n\n**Who it affects:** Owners and operators of **Piper PA-30 Twin Comanche aeroplanes** that have *not* been modified with a specific Piper kit (Kit 760 368, referenced in Service Letter 552).\n\n**What it requires:**\n- **Change or install a placard** (a safety sign inside the cockpit) that displays the minimum single-engine control speed\n- The placard must read: **\"MINIMUM SINGLE ENGINE CONTROL SPEED 80 Kts. IAS\"** (meaning 80 knots Indicated Air Speed — the slowest speed at which the pilot can still control the aircraft if one engine fails)\n- The text size cannot be smaller than what's already on any existing placard\n\n**Key flexibility:** Unlike most aircraft maintenance, this specific task can be done and signed off by **the pilot or owner themselves** — you don't need a licensed aircraft mechanic.\n\n**Deadline:** Before flying the aircraft again after **26 November 1969**.\n\n**Why it matters:** This ensures pilots have clear, accurate information about critical safety speeds. Flying below this speed with one engine out could mean losing control of the aircraft."}},"importantCases":[],"_links":{"self":"/api/acts/ad-pa-30-8-vmc-placard-revision","history":"/api/acts/ad-pa-30-8-vmc-placard-revision/history","analysis":"/api/acts/ad-pa-30-8-vmc-placard-revision/analysis","conflicts":"/api/acts/ad-pa-30-8-vmc-placard-revision/conflicts","importantCases":"/api/acts/ad-pa-30-8-vmc-placard-revision/important-cases","documents":"/api/acts/ad-pa-30-8-vmc-placard-revision/documents"}}