{"id":"F2006B10146","name":"AD/GA-7/2 - Elevator Trim Control Master Chain - Inspection and Modification","slug":"ad-ga-7-2-elevator-trim-control-master-chain-inspection-and-modification","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":55721,"registerId":"commonwealth-F2006B10146-current","compilationNumber":null,"startDate":"2026-04-02","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/GA-7/2 - Elevator Trim Control Master Chain - Inspection and Modification","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)  Gulfstream (Grumman American) GA-7 Series Aeroplanes\n\n \n\nAD/GA-7/2 Elevator Trim Control Master Chain - Inspection NK\n\nand Modification\n\n \n\nApplicability: All models GA-7 with S/Nos. GA7-0002 to GA7-0036, GA7-0038 to GA7-0043, GA7-0045 and GA7-0049.\n\n \n\nDocument: 1. GAC SB ME-6; or\n\n \n\n2. FAA AD 78-22-06.\n\n \n\nCompliance: 1. For those aircraft with current certificate of airworthiness, within 5 hours time in service after 18 December 1978.\n\n \n\n2. For those aircraft not certified at 18 December 1978, before certification.\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 addressing a specific mechanical defect in a limited fleet of aircraft. It has not expanded beyond its original purpose of ensuring elevator trim system integrity in the specified GA-7 serial numbers."},"complexity_factors":["Very short document (approximately 200 words)","Only 4 defined elements: applicability (serial numbers), document references, compliance deadlines, and the specific aircraft system","No nested conditional logic — just two straightforward compliance paths based on certification status","No cross-references to other legislation beyond citing equivalent FAA directive and manufacturer service bulletin","Single mechanical issue addressed with clear pass/fail compliance criteria"],"plain_english_summary":"This is an **Airworthiness Directive (AD)** issued by Australia's Civil Aviation Safety Authority (CASA) that mandates safety work on specific Gulfstream GA-7 aircraft.\n\n**What it does:**\n- Requires owners/operators of certain GA-7 aeroplanes to inspect and modify the **elevator trim control master chain** — a mechanical component that helps control the aircraft's pitch (nose up/down movement).\n\n**Who it affects:**\n- Owners and operators of Gulfstream (formerly Grumman American) GA-7 series aircraft with specific serial numbers: GA7-0002 through GA7-0036, GA7-0038 through GA7-0043, plus GA7-0045 and GA7-0049.\n\n**Why it matters:**\n- This addresses a safety defect in the elevator trim system. If the master chain fails, pilots could lose control of the aircraft's pitch trim, potentially leading to loss of control.\n\n**What must be done:**\n- **Already certified aircraft:** Complete the inspection and modification within 5 hours of flying time after 18 December 1978.\n- **Aircraft not yet certified:** Complete the work before the aircraft receives its certificate of airworthiness.\n\n**Technical reference:**\nThe work must follow either Gulfstream American Corporation Service Bulletin ME-6 or the equivalent US Federal Aviation Administration AD 78-22-06."},"flash_summary":{"complexity_score":3,"scope_assessment":{"changed":false,"description":"The AD's scope is explicit in the text: it applies only to the listed GA-7 serial numbers and requires compliance with one of two named documents within the stated timeframes. There is no internal indication that the AD expands or narrows its own stated applicability or deadlines compared with its operative language."},"complexity_factors":["Narrow technical and operator scope (limited list of serial numbers) reduces breadth of affected parties (Applicability).","Compliance tied to short, specific time windows (5 hours time in service after a fixed date; before certification for uncertificated aircraft) increases immediacy but keeps procedural complexity low (Compliance paras 1–2).","Technical work is defined by external documents (GAC SB ME-6 or FAA AD 78-22-06) rather than set out in the AD, requiring operators to obtain and follow separate technical material (Document).","No options or alternative procedures are provided in the AD itself, limiting interpretive discretion but requiring reliance on referenced documents (Document).","Administrative clarity (who must act, when, and the documents to use) reduces legal ambiguity but leaves operational logistics and costs to owners/operators (Applicability; Compliance; Document)."],"plain_english_summary":"This AD requires owners/operators of specified Gulfstream (Grumman American) GA‑7 serial numbers to inspect and modify the elevator trim control master chain, complying with either GAC SB ME‑6 or FAA AD 78‑22‑06. Aircraft certificated on 18 Dec 1978 must comply within 5 hours TIS after that date; uncertificated aircraft must comply before certification. The work and costs fall to owners/operators and aircraft cannot be certificated or remain in service until completed."}},"importantCases":[],"_links":{"self":"/api/acts/ad-ga-7-2-elevator-trim-control-master-chain-inspection-and-modification","history":"/api/acts/ad-ga-7-2-elevator-trim-control-master-chain-inspection-and-modification/history","analysis":"/api/acts/ad-ga-7-2-elevator-trim-control-master-chain-inspection-and-modification/analysis","conflicts":"/api/acts/ad-ga-7-2-elevator-trim-control-master-chain-inspection-and-modification/conflicts","importantCases":"/api/acts/ad-ga-7-2-elevator-trim-control-master-chain-inspection-and-modification/important-cases","documents":"/api/acts/ad-ga-7-2-elevator-trim-control-master-chain-inspection-and-modification/documents"}}