{"id":"F2006B10318","name":"AD/GROB 115/11 - Aileron Control Rod","slug":"ad-grob-115-11-aileron-control-rod","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":56067,"registerId":"commonwealth-F2006B10318-current","compilationNumber":null,"startDate":"2026-04-02","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/GROB 115/11 - Aileron Control Rod","content":"COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 \\- 105 CIVIL AVIATION SAFETY AUTHORITY\n\nSCHEDULE OF AIRWORTHINESS DIRECTIVES\n\n![](image.001.png)  \nGrob G115 Series Aeroplanes\n\nAD/GROB 115/11 Aileron Control Rod 7/98\n\nApplicability: Model G115 and G115A, all serial numbers.\n\nRequirement: Replace aileron control rods no. 1 (part number 115-4400/4401) with modified aileron control rods no. 1 (part number 115-4410/4411) in accordance with Grob Service Bulletin (SB)1078-14.\n\nNote 1: LBA AD 90-229 refers.\n\nNote 2: Aileron control rods (part number 115-4400/4401) removed from aircraft or in storage should be rendered unserviceable or destroyed.\n\nCompliance: Unless already accomplished, replace within 20 hours time in service after 18 June 1998.\n\nThis airworthiness directive becomes effective on 18 June 1998.\n\nBackground: Application of high control forces can distort the aileron control rod no. 1 (part number 115-4400/4401), interfering with proper control of the aircraft. This directive requires installation of a modified control rod with an additional stop to prevent damage during operation.","sortOrder":0}],"analysis":{"kimi_summary":{"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This is a discrete, targeted safety directive addressing a specific mechanical defect in specific aircraft models. It has not expanded beyond its original purpose of mandating a hardware replacement to prevent control system failures."},"complexity_factors":["Single, specific mechanical part replacement with clear part numbers","No defined terms section or interpretation provisions","Single compliance pathway with one deadline","No cross-references to other legislation (only references to manufacturer service bulletin and German aviation authority document for context)","Straightforward conditional logic: 'unless already accomplished' is the only qualifier"],"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). Think of it as a recall notice for aircraft, but legally binding.\n\n**What it does:** It requires owners and operators of specific Grob training aircraft (the G115 and G115A models) to replace a particular part — the \"aileron control rod no. 1\" — with a stronger, modified version.\n\n**Why it matters:** The original control rods can bend or distort when pilots apply high force to the controls. This bending can jam the ailerons (the wing flaps that make the plane turn), potentially causing loss of control. The new part has an extra \"stop\" — a physical barrier that prevents the rod from bending too far.\n\n**Who must comply:** Anyone operating or maintaining a Grob G115 or G115A aircraft, regardless of when it was built (all serial numbers are affected).\n\n**The deadline:** The replacement had to be done within 20 hours of flying time after 18 June 1998. Any old parts removed had to be destroyed or marked as unusable to prevent them being accidentally reinstalled."},"flash_summary":{"complexity_score":3,"scope_assessment":{"changed":false,"description":"The directive does not broaden or add obligations beyond replacing a specific part on the identified aircraft. It applies to all serial numbers of the G115 and G115A and mandates replacement of part 115-4400/4401 with part 115-4410/4411 per the manufacturer’s service bulletin; it also requires removed original parts to be rendered unserviceable or destroyed. There is no indication in the text that the AD expands the affected fleet or imposes additional unrelated regulatory duties beyond the stated replacement and disposal requirements. (Applicability; Requirement; Note 2; Compliance)"},"complexity_factors":["Specific technical action required (replace one identified part with a modified part) — technical but narrowly defined (Requirement).","Short compliance window (20 hours time in service after effective date), increasing scheduling urgency (Compliance).","Mandatory destruction or rendering unserviceable of removed parts, reducing spare availability and requiring disposal steps (Note 2).","Need to follow a manufacturer service bulletin (SB1078-14) to complete the work — requires access to and compliance with technical instructions (Requirement).","Cross-reference to another authority’s AD (LBA AD 90-229) introduces an external regulatory linkage (Note 1).","Applicability to all serial numbers of two models simplifies coverage but increases the number of affected operators (Applicability).","Low regulatory discretion: the AD prescribes specific parts and actions, leaving little room for alternative compliance methods (Requirement)."],"plain_english_summary":"This AD requires owners/operators of Grob G115 and G115A aircraft to replace aileron control rods (115‑4400/4401) with modified parts (115‑4410/4411) per Grob SB1078‑14, render removed original rods unserviceable, and complete the change within 20 hours TIS after the 18 June 1998 effective date. It shifts cost and scheduling burdens to operators to address a distortion risk that could interfere with proper flight control."}},"importantCases":[],"_links":{"self":"/api/acts/ad-grob-115-11-aileron-control-rod","history":"/api/acts/ad-grob-115-11-aileron-control-rod/history","analysis":"/api/acts/ad-grob-115-11-aileron-control-rod/analysis","conflicts":"/api/acts/ad-grob-115-11-aileron-control-rod/conflicts","importantCases":"/api/acts/ad-grob-115-11-aileron-control-rod/important-cases","documents":"/api/acts/ad-grob-115-11-aileron-control-rod/documents"}}