{"id":"F2006B05663","name":"AD/PA-30/21 Amdt 1 - Uncoordinated Manoeuvres - Warning Placard","slug":"ad-pa-30-21-amdt-1-uncoordinated-manoeuvres-warning-placard","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"repealed","isInForce":false,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":135376,"registerId":"commonwealth-F2006B05663-current","compilationNumber":null,"startDate":"2026-04-03","status":"Repealed","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/PA-30/21 Amdt 1 - Uncoordinated Manoeuvres - Warning Placard","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-30/21\n\nAmdt 1\n\n\nUncoordinated Manoeuvres - Warning Placard 6/75\n\n \n\nApplicability: Model PA-30 with S/Nos. 30-1 to 30-2000 and Model PA-39 with S/Nos. 39-1 to 39- 155.\n\n \n\nDocument: Piper SB No. 456A.\n\n \n\nCompliance: Within 100 hours time in service after 31 July 1975.\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\n \n\n \n","sortOrder":0}],"analysis":{"kimi_summary":{"_metrics":{"model":"kimi-k2.5","source":"moonshot-batch","completionTokens":2016},"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"As Amendment 1 to an existing directive, this instrument appears to maintain the original scope of requiring a warning placard installation. It likely updates administrative references or extends compliance deadlines without altering the fundamental safety requirement or expanding the affected aircraft population."},"complexity_factors":["Extremely short text (under 150 words of substantive content)","Simple, unambiguous applicability limited to specific aircraft serial numbers","Single compliance obligation with a clear deadline","No exceptions, exemptions, or conditional provisions","Technical details incorporated by reference to an external service bulletin rather than included in the text"],"plain_english_summary":"**What this does:** This is a mandatory safety directive for owners and operators of specific Piper Twin Comanche aircraft (models PA-30 and PA-39 with serial numbers 30-1 to 30-2000 and 39-1 to 39-155).\n\n**What you must do:** Install a warning placard in the cockpit that alerts pilots about the dangers of \"uncoordinated manoeuvres\" (flying while the aircraft is banking or yawing improperly, which can cause a dangerous stall or spin in these models). The installation must follow the technical instructions in Piper Service Bulletin No. 456A.\n\n**When:** You must complete this work within 100 hours of flight time after 31 July 1975.\n\n**Why it matters:** This prevents accidents caused by pilots inadvertently stalling the aircraft during uncoordinated flight, which was a known risk for these particular Twin Comanche models."}},"importantCases":[],"_links":{"self":"/api/acts/ad-pa-30-21-amdt-1-uncoordinated-manoeuvres-warning-placard","history":"/api/acts/ad-pa-30-21-amdt-1-uncoordinated-manoeuvres-warning-placard/history","analysis":"/api/acts/ad-pa-30-21-amdt-1-uncoordinated-manoeuvres-warning-placard/analysis","conflicts":"/api/acts/ad-pa-30-21-amdt-1-uncoordinated-manoeuvres-warning-placard/conflicts","importantCases":"/api/acts/ad-pa-30-21-amdt-1-uncoordinated-manoeuvres-warning-placard/important-cases","documents":"/api/acts/ad-pa-30-21-amdt-1-uncoordinated-manoeuvres-warning-placard/documents"}}