{"id":"F2006B08942","name":"AD/DH114/31 - Rudder Control Pedal Reversal Lever - Inspection","slug":"ad-dh114-31-rudder-control-pedal-reversal-lever-inspection","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":52555,"registerId":"commonwealth-F2006B08942-current","compilationNumber":null,"startDate":"2026-04-02","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/DH114/31 - Rudder Control Pedal Reversal Lever - 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)  DH114 (Heron) Series Aeroplanes\n\n \n\nAD/DH114/31 Rudder Control Pedal Reversal Lever - Inspection NK\n\nApplicability: All models.\n\n \n\nDocument: Hawker Siddeley TNS Heron (114) No. CF.15.\n\n \n\nCompliance: Within 100 hours time in service after 31 March 1971 and thereafter at intervals not exceeding 2400 hours time in service.\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 itself sets a recurring inspection requirement for the rudder control pedal reversal lever on all DH114 (Heron) models and specifies timing and a reference technical document. The text contains no indication that the scope of the obligation (applicability, component inspected, timing) has been changed from the directive as stated here: see \"Applicability: All models\" and the \"Compliance\" timing language."},"complexity_factors":["Clear, single technical requirement (inspection) with simple timing intervals","Broad applicability (all models) increases administrative reach but not technical complexity","Inspection procedure is not included in the AD and is referenced to an external technical document (Hawker Siddeley TNS Heron (114) No. CF.15), requiring cross‑reference","Requires ongoing compliance tracking by hours time in service (maintenance scheduling/recordkeeping)","No detailed remediation steps in the AD—outcomes depend on findings and the external document"],"plain_english_summary":"This directive mandates recurring inspections of the rudder control pedal reversal lever on DH114 (Heron) aeroplanes, requiring the first check within 100 hours time-in-service after 31 March 1971 and thereafter at intervals not exceeding 2400 hours. Operators, owners and maintenance organisations must use Hawker Siddeley TNS Heron (114) No. CF.15 for the inspection procedure. It protects control‑system safety but imposes recurring inspection costs, downtime and reliance on the referenced technical document."},"kimi_summary":{"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This is a discrete, single-issue airworthiness directive from 1971 concerning one specific mechanical component on one aircraft type. It has not expanded beyond its original safety purpose."},"complexity_factors":["Extremely short document (under 200 words)","Only 4 operative elements: applicability, reference document, compliance deadline, and recurring interval","No defined terms section","No cross-references to other legislation beyond the enabling regulation (CAR 1998 Part 39)","Single, unambiguous compliance action with clear time-based triggers","No conditional logic, exceptions, or alternative compliance methods"],"plain_english_summary":"**What this is:** This is an **Airworthiness Directive (AD)** — a mandatory safety order issued by Australia's Civil Aviation Safety Authority (CASA) under the Civil Aviation Regulations 1998.\n\n**What it requires:** Owners and operators of **DH114 Heron series aircraft** must inspect a specific part called the **\"rudder control pedal reversal lever\"** — a component of the foot controls that steer the plane on the ground and help coordinate turns in the air.\n\n**When to do it:**\n- **First inspection:** Within 100 hours of flying time after 31 March 1971\n- **Repeat inspections:** Every 2,400 hours of flying time thereafter\n\n**Why it matters:** This directive was issued because the rudder pedal reversal lever likely had a safety defect that could affect aircraft control. ADs are legally binding — failure to comply means the aircraft cannot fly legally in Australia.\n\n**Who needs to know:** Anyone who owns, operates, or maintains DH114 Heron aircraft (a British-built twin-engine airliner from the 1950s, now mostly used in charter or heritage flying)."}},"importantCases":[],"_links":{"self":"/api/acts/ad-dh114-31-rudder-control-pedal-reversal-lever-inspection","history":"/api/acts/ad-dh114-31-rudder-control-pedal-reversal-lever-inspection/history","analysis":"/api/acts/ad-dh114-31-rudder-control-pedal-reversal-lever-inspection/analysis","conflicts":"/api/acts/ad-dh114-31-rudder-control-pedal-reversal-lever-inspection/conflicts","importantCases":"/api/acts/ad-dh114-31-rudder-control-pedal-reversal-lever-inspection/important-cases","documents":"/api/acts/ad-dh114-31-rudder-control-pedal-reversal-lever-inspection/documents"}}