{"id":"F2006B06115","name":"AD/PC-6/13 - Elevator Attachment Bracket - Inspection","slug":"ad-pc-6-13-elevator-attachment-bracket-inspection","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":46874,"registerId":"commonwealth-F2006B06115-current","compilationNumber":null,"startDate":"2026-04-02","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/PC-6/13 - Elevator Attachment Bracket - Inspection","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)  Pilatus Porter PC-6 Series Aeroplanes\n\n \n\nAD/PC-6/13 Elevator Attachment Bracket - Inspection 1/67\n\nApplicability: All models prior to S/Nos. 621 not modified in accordance with SB No. 67. Document:               Pilatus SB No. 67.\n\nCompliance: Inspect with the aid of dye penetrant at intervals not exceeding 100 hours time in service after 15 January 1967.\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\n \n\n \n","sortOrder":0}],"analysis":{"flash_summary":{"complexity_score":2,"scope_assessment":{"changed":false,"description":"The directive's scope, as expressed in the text, is limited to Pilatus PC-6 aeroplanes with serial numbers prior to 621 that have not been modified per Pilatus SB No. 67, and it prescribes dye-penetrant inspections at intervals not exceeding 100 hours TIS after 15 January 1967 (Applicability and Compliance clauses quoted above). The instrument therefore defines a narrowly circumscribed set of aircraft and a specific inspection obligation; the text does not indicate an expansion or contraction relative to any other rule within this document itself."},"complexity_factors":["Narrow technical scope: applies only to Pilatus PC-6 models prior to serial number 621 (Applicability: \"All models prior to S/Nos. 621 not modified in accordance with SB No. 67\").","Single, specific inspection method required: dye penetrant (Compliance: \"Inspect with the aid of dye penetrant...\").","Fixed and frequent interval: inspections \"at intervals not exceeding 100 hours time in service\" (Compliance quoted above).","Dependency on external document: references Pilatus SB No. 67 for modification and related detail (Applicability: \"Document: Pilatus SB No. 67\").","Lack of procedural detail in the text: no remedial action, record-keeping, or enforcement procedures are included in the instrument (source quotes contain only applicability and inspection requirement).","Historical effective date in the text (after 15 January 1967) which makes the directive tied to an operational timeline (Compliance quoted above)."],"plain_english_summary":"This directive requires owners/operators of Pilatus PC‑6 aeroplanes (all models before S/N 621 not modified per Pilatus SB No. 67) to perform recurring dye‑penetrant inspections of the elevator attachment bracket at intervals not exceeding 100 hours TIS.\n\nAffected operators bear the inspection costs and downtime, or may elect the SB No. 67 modification to remove the recurring inspection obligation."},"kimi_summary":{"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This is a discrete, targeted safety directive focused on a specific airframe component. It has not expanded beyond its original purpose of ensuring structural integrity of the elevator attachment bracket on early-model Pilatus PC-6 aircraft."},"complexity_factors":["Extremely short document (approximately 150 words)","Only 1 defined applicability criterion (serial number threshold)","Single compliance action with clear frequency (100 hours)","No cross-references to other legislation or regulations beyond the parent Civil Aviation Regulations 1998","No conditional logic, exceptions, or nested provisions","Straightforward technical reference to a single Service Bulletin"],"plain_english_summary":"This is an **Airworthiness Directive (AD)** — essentially a mandatory safety order — issued by Australia's Civil Aviation Safety Authority (CASA) for a specific type of aircraft: the **Pilatus Porter PC-6 series**.\n\n**What it does:**\n- Requires owners and operators to inspect a specific part called the **\"elevator attachment bracket\"** — this is a structural component that connects the elevator (the movable part on the tail that controls the aircraft's pitch) to the rest of the plane.\n- The inspection must use **dye penetrant** (a testing method where coloured liquid is applied to reveal cracks or defects not visible to the naked eye).\n\n**Who it affects:**\n- Owners and operators of Pilatus Porter PC-6 aircraft with **serial numbers below 621** that have **not** been modified according to Pilatus Service Bulletin No. 67.\n\n**When and how often:**\n- First inspection due by **15 January 1967**.\n- Then repeated **every 100 hours of flight time** thereafter.\n\n**Why it matters:**\nThis directive addresses a potential structural weakness that, if left unchecked, could lead to elevator failure — meaning the pilot could lose control of the aircraft's nose-up or nose-down movement. These directives are legally binding; ignoring them grounds the aircraft."}},"importantCases":[],"_links":{"self":"/api/acts/ad-pc-6-13-elevator-attachment-bracket-inspection","history":"/api/acts/ad-pc-6-13-elevator-attachment-bracket-inspection/history","analysis":"/api/acts/ad-pc-6-13-elevator-attachment-bracket-inspection/analysis","conflicts":"/api/acts/ad-pc-6-13-elevator-attachment-bracket-inspection/conflicts","importantCases":"/api/acts/ad-pc-6-13-elevator-attachment-bracket-inspection/important-cases","documents":"/api/acts/ad-pc-6-13-elevator-attachment-bracket-inspection/documents"}}