{"id":"F2006B06794","name":"AD/SC7/19 Amdt 1 - Flight Control Rods","slug":"ad-sc7-19-amdt-1-flight-control-rods","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":114649,"registerId":"commonwealth-F2006B06794-current","compilationNumber":null,"startDate":"2026-04-03","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/SC7/19 Amdt 1 - Flight Control Rods","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)  Short SC7 (Skyvan) Series Aeroplanes\n\n \n\nAD/SC7/19\n\nAmdt 1\n\n\nFlight Control Rods 13/95\n\n \n\nApplicability: All Model SC7 aircraft.\n\n \n\nRequirement: Action in accordance with Shorts Service Bulletin 27-74 Revision 1.\n\n \n\nCompliance: Within 60 days after 25 May 1995; thereafter at intervals not to exceed 1200 hours time in service or 2 calendar years, whichever occurs first.\n\n \n\nThe compliance date of the previous issue of this Directive remains unchanged. This Amendment is effective from 7 December 1995.\n\nBackground: Pitting Corrosion, and Stress Corrosion cracking has been discovered in the flight control rods.\n\n \n\nAmendment 1 is issued in response to a revision of the Requirement Document which increases the calendar time repetitive inspection period.\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":3,"scope_assessment":{"changed":true,"description":"Amendment 1 changes the recurring compliance window by increasing the calendar-time limit between inspections (Amendment 1). The directive still covers all Model SC7 aircraft and retains the 1,200 flight-hour limit, but allows a longer maximum interval measured in calendar years, affecting operators' inspection scheduling and record-keeping (Requirement; Compliance; Amendment 1 note)."},"complexity_factors":["Narrow applicability: applies to all Model SC7 aircraft only (Applicability).","Prescriptive remedial action: requires following an external document — Shorts Service Bulletin 27-74 Revision 1 (Requirement).","Recurring compliance obligation: initial and repetitive inspection schedule creates ongoing maintenance burden (Compliance).","Dual interval metric: uses flight hours or calendar time, requiring operators to track both (Compliance).","Amendment alters timing: Amendment 1 increases the calendar-time repeat interval, changing prior planning and record-keeping (Amendment 1 note).","Safety basis stated: pitting corrosion and stress-corrosion cracking identified as the hazard prompting the directive (Background).","Fixed effective date and retrospective compliance trigger: sets an initial compliance deadline tied to a past reference date and a later amendment effective date (Compliance; Amendment effective date)."],"plain_english_summary":"This Airworthiness Directive requires all Short SC7 (Skyvan) aircraft to have their flight control rods inspected and maintained following Shorts Service Bulletin 27-74 Revision 1 because pitting and stress-corrosion cracking were found. Owners/operators must comply within 60 days after 25 May 1995 and then at intervals not exceeding 1,200 flight hours or 2 calendar years. Amendment 1 increases the allowable calendar interval; it is effective 7 December 1995."},"kimi_summary":{"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This amendment represents a minor technical adjustment to the inspection interval (extending the calendar time period). It does not expand the scope beyond the original safety purpose of ensuring flight control rod integrity."},"complexity_factors":["Single, specific aircraft model (Short SC7 Skyvan)","Only one technical requirement (comply with manufacturer service bulletin)","Simple compliance structure: one-time initial action plus recurring interval","No defined terms section","No cross-references to other legislation","Straightforward timing calculation (hours OR years, whichever first)","Document is approximately 150 words"],"plain_english_summary":"**What this is:** This is an Airworthiness Directive (AD) — a mandatory safety order issued by the Civil Aviation Safety Authority (CASA) for specific aircraft.\n\n**What it does:** It requires owners and operators of Short SC7 \"Skyvan\" aircraft to inspect the flight control rods (the metal rods that connect the pilot's controls to the moving parts of the plane) for corrosion and cracking.\n\n**Who it affects:** Anyone who owns or operates a Short SC7 Series aeroplane — a twin-turboprop utility aircraft.\n\n**What must be done:**\n- **Initial inspection:** Within 60 days after 25 May 1995\n- **Repeat inspections:** Every 1,200 flight hours **or** every 2 years (whichever comes first)\n- **How:** Follow the procedures in \"Shorts Service Bulletin 27-74 Revision 1\" (a technical instruction from the manufacturer)\n\n**Why it matters:** Pitting corrosion and stress corrosion cracking were found in these rods. If left unchecked, this could cause the flight controls to fail — potentially leading to loss of control of the aircraft. This amendment (Amendment 1) relaxed the original rule slightly by extending the calendar-based inspection interval from the original requirement."}},"importantCases":[],"_links":{"self":"/api/acts/ad-sc7-19-amdt-1-flight-control-rods","history":"/api/acts/ad-sc7-19-amdt-1-flight-control-rods/history","analysis":"/api/acts/ad-sc7-19-amdt-1-flight-control-rods/analysis","conflicts":"/api/acts/ad-sc7-19-amdt-1-flight-control-rods/conflicts","importantCases":"/api/acts/ad-sc7-19-amdt-1-flight-control-rods/important-cases","documents":"/api/acts/ad-sc7-19-amdt-1-flight-control-rods/documents"}}