{"id":"F2006B11414","name":"AD/OPTICA/2 - Engine Pod Mounting Feet","slug":"ad-optica-2-engine-pod-mounting-feet","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":57324,"registerId":"commonwealth-F2006B11414-current","compilationNumber":null,"startDate":"2026-04-02","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/OPTICA/2 - Engine Pod Mounting Feet","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)  FLS Aerospace OA7 Optica Series Aeroplanes\n\n \n\nAD/OPTICA/2 Engine Pod Mounting Feet 7/94\n\nApplicability: Model OA7 Optica aircraft.\n\n \n\nRequirement: Action in accordance with FLS Aerospace Service Bulletin OA7/SB/0040.\n\n \n\nNote: UK CAA AD 010-03-94 refers.\n\n \n\nCompliance: At the next 50 hour inspection after 23 June 1994, and thereafter at every subsequent 50 hour inspection.\n\n \n\nBackground: The UK CAA requires a periodic inspection of the engine pod mounting feet, and replacement of any mounting foot found to contain a crack.\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":{"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This is a discrete, targeted safety directive for a specific aircraft component. It has not expanded beyond its original purpose of ensuring engine mount integrity on the OA7 Optica."},"complexity_factors":["Single, specific aircraft model applicability (Model OA7 Optica only)","One clear action required (inspect and replace if cracked)","Simple compliance schedule (every 50 hours)","No defined terms section","No cross-references to other legislation beyond a single UK reference","No conditional logic or exceptions","Total length is approximately 150 words"],"plain_english_summary":"This is an **Airworthiness Directive** (a mandatory safety order) issued by Australia's Civil Aviation Safety Authority for a specific type of aircraft: the **FLS Aerospace OA7 Optica**.\n\n**What it does:**\n- Requires owners and operators of these aircraft to inspect the **engine pod mounting feet** (the brackets that hold the engine housing to the wing) for cracks.\n- If any cracks are found, the mounting foot must be replaced.\n\n**Who it affects:**\n- Anyone who owns or operates a Model OA7 Optica aircraft in Australia.\n\n**When it must be done:**\n- First inspection: at the next routine 50-hour maintenance check after 23 June 1994.\n- Then repeated **every 50 hours of flight time** thereafter (ongoing requirement).\n\n**Why it matters:**\n- Cracked engine mounts could cause the engine to detach from the wing in flight, which would be catastrophic. This directive prevents that by mandating regular checks.\n- It references a UK safety bulletin, showing this is based on international safety findings.\n\n**Key point:** This is not optional—it's a legal requirement for airworthiness. Flying without compliance could ground the aircraft or invalidate insurance."},"flash_summary":{"complexity_score":2,"scope_assessment":{"changed":false,"description":"The text contains no amendment history or language indicating a change in scope from a prior directive. It sets a specific, narrow requirement applicable to Model OA7 Optica aircraft: periodic inspections at 50‑hour intervals after 23 June 1994 and replacement of cracked engine pod mounting feet, implemented by following FLS Aerospace Service Bulletin OA7/SB/0040 (Applicability; Requirement; Compliance; Background). There is no internal evidence that the instrument’s scope has been expanded or narrowed relative to an earlier version."},"complexity_factors":["Very narrow applicability: only Model OA7 Optica aircraft (Applicability).","Clear, fixed recurring inspection interval (every 50 hours) reduces procedural ambiguity (Compliance).","Mandates compliance with an external technical document (FLS Aerospace Service Bulletin OA7/SB/0040) rather than reproducing technical steps (Requirement).","Requires replacement only if a crack is found, creating a binary decision in practice but relying on inspection quality (Background).","Reference to a foreign AD (UK CAA) creates an external alignment dependency (Note).","Operational dependencies (parts availability, qualified labour) introduce practical implementation considerations not specified in the AD (Requirement/Background)."],"plain_english_summary":"This AD requires owners/operators of FLS Aerospace OA7 Optica aircraft to carry out the inspection and to replace any cracked engine pod mounting foot, following FLS Aerospace Service Bulletin OA7/SB/0040. Inspections must occur at the next 50‑hour check after 23 June 1994 and every 50 hours thereafter. The Civil Aviation Safety Authority issues the mandatory requirement; costs and scheduling fall to operators."}},"importantCases":[],"_links":{"self":"/api/acts/ad-optica-2-engine-pod-mounting-feet","history":"/api/acts/ad-optica-2-engine-pod-mounting-feet/history","analysis":"/api/acts/ad-optica-2-engine-pod-mounting-feet/analysis","conflicts":"/api/acts/ad-optica-2-engine-pod-mounting-feet/conflicts","importantCases":"/api/acts/ad-optica-2-engine-pod-mounting-feet/important-cases","documents":"/api/acts/ad-optica-2-engine-pod-mounting-feet/documents"}}