{"id":"F2006B06001","name":"AD/PA-44/10 Amdt 1 - Engine Mount Frame Cracking","slug":"ad-pa-44-10-amdt-1-engine-mount-frame-cracking","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"repealed","isInForce":false,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":114399,"registerId":"commonwealth-F2006B06001-current","compilationNumber":null,"startDate":"2026-04-03","status":"Repealed","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/PA-44/10 Amdt 1 - Engine Mount Frame Cracking","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-44 (Seminole) Series Aeroplanes\n\n \n\n# AD/PA-44/10\n\nAmdt 1\n\nApplicability: All models.\n\n# Engine Mount Frame Cracking 3/86\n\n \n\nDocument: Action in accordance with Piper SB No 719. Compliance: As per requirement document.\n\nBackground:  The manufacturer has received reports of cracks at the intersection of the engine mount ring and the lower diagonal tubes. The Department has received MDRs of similar cracking on aircraft serial numbers outside the effectivity of the Service Bulletin. Amendment 1 extends this inspection to all models.\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":1789},"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":true,"description":"Amendment 1 significantly expanded the scope from the original directive. The original AD applied only to specific aircraft serial numbers covered by Piper Service Bulletin 719. Amendment 1 extends the mandatory inspection requirement to all models of the PA-44 series, regardless of serial number."},"complexity_factors":["Very short document (less than one page)","No defined terms or interpretation section","Single, unconditional compliance requirement (follow Piper SB 719)","Only one cross-reference to external technical document","No exceptions, conditions, or nested clauses"],"plain_english_summary":"**What this is:** This is an Airworthiness Directive (AD) — a mandatory safety rule issued by the Civil Aviation Safety Authority (CASA) under the Civil Aviation Regulations 1988.\n\n**What it requires:** Owners and operators of Piper PA-44 Seminole aircraft must inspect the engine mount frames for cracks by following the exact procedures in **Piper Service Bulletin No. 719**.\n\n**Who it affects:** All models of the Piper PA-44 series. Originally, this only applied to specific aircraft serial numbers listed in the Service Bulletin, but **Amendment 1 expands this to every PA-44 aircraft**.\n\n**Why it matters:** Cracks where the engine mount ring meets the lower diagonal tubes can cause the engine to separate from the aircraft in flight — a catastrophic failure. This directive makes the inspection legally compulsory. If you don't comply, the aircraft is not airworthy and cannot legally fly."}},"importantCases":[],"_links":{"self":"/api/acts/ad-pa-44-10-amdt-1-engine-mount-frame-cracking","history":"/api/acts/ad-pa-44-10-amdt-1-engine-mount-frame-cracking/history","analysis":"/api/acts/ad-pa-44-10-amdt-1-engine-mount-frame-cracking/analysis","conflicts":"/api/acts/ad-pa-44-10-amdt-1-engine-mount-frame-cracking/conflicts","importantCases":"/api/acts/ad-pa-44-10-amdt-1-engine-mount-frame-cracking/important-cases","documents":"/api/acts/ad-pa-44-10-amdt-1-engine-mount-frame-cracking/documents"}}