{"id":"F2006B10505","name":"AD/HS 125/65 - Main Landing Gear Jack Attachment Bracket - Inspection","slug":"ad-hs-125-65-main-landing-gear-jack-attachment-bracket-inspection","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":116273,"registerId":"commonwealth-F2006B10505-current","compilationNumber":null,"startDate":"2026-04-03","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/HS 125/65 - Main Landing Gear Jack 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)  British Aerospace BAe 125 Series Aeroplanes\n\n \n\nAD/HS 125/65  Main Landing Gear Jack Attachment Bracket - Inspection\n\n\n7/84\n\n \n\nApplicability: All models HS/DH/BH 125 incorporating long range fuel tank (modification 255640). Document:               British Aerospace 125 Service Bulletin 32-200.\n\nCompliance: (a) For aircraft with more than 3000 landings as at 31 July 1984 - not later than 30 September 1984.\n\n \n\n(b) For aircraft with less than 3000 landings - before exceeding 3000 landings.\n\n \n\nBackground: Cracking of jack attachment brackets and adjacent door structure has been reported on overseas aircraft. Such cracking could affect opening of the main landing gear doors, thus preventing the gear from lowering.\n\n \n","sortOrder":0}],"analysis":{"flash_summary":{"complexity_score":2,"scope_assessment":{"changed":false,"description":"The AD implements an inspection requirement targeted at models incorporating modification 255640 to address reported cracking. The text confines action to those affected aircraft and a single inspection trigger (3,000 landings) and references a manufacturer service bulletin for the technical procedure (Applicability; Compliance; Document; Background). There is no indication in the instrument that the scope was broadened beyond the stated applicability or that the compliance obligations were altered from the safety issue described; therefore the scope has not changed from the original intent as expressed in the AD."},"complexity_factors":["Narrow applicability: only HS/DH/BH 125 models with long range fuel tank mod 255640 (Applicability).","Single mandated action: one inspection requirement rather than recurring inspections or multiple new rules (Compliance).","Clear numeric trigger/deadline tied to landing counts (3,000 landings) which is straightforward to measure but requires accurate record-keeping (Compliance).","Reliance on an external technical document (British Aerospace Service Bulletin 32-200) for inspection method increases procedural dependency on manufacturer material (Document).","Potential downstream complexity if cracks are found: repairs and follow-up actions are not specified in the AD and will depend on the service bulletin or approved repair methods (Document).","Time-bound dates (31 July 1984 and 30 September 1984) make the AD historically fixed rather than open-ended, reducing ongoing regulatory complexity (Compliance)."],"plain_english_summary":"This AD mandates a one‑time inspection of the main landing‑gear jack attachment bracket and adjacent door structure on BAe 125 HS/DH/BH series aeroplanes fitted with long‑range fuel tank modification 255640, using British Aerospace Service Bulletin 32‑200. It targets aircraft approaching or past a 3,000‑landing threshold (specific deadlines apply).\n\nOperators must fund and schedule the inspection and any repairs; the measure addresses reported cracking that could prevent gear doors opening and impede gear lowering."},"kimi_summary":{"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This is a discrete, time-bound safety directive issued in 1984. It has not evolved beyond its original purpose of mandating a specific inspection for a defined aircraft population. Airworthiness Directives are typically standalone instruments that remain in force until complied with or superseded, and this text shows no evidence of scope creep."},"complexity_factors":["Very short document (approximately 150 words)","Only 2 defined applicability criteria (aircraft model and specific modification)","Simple binary compliance structure based on landing count threshold","Single cross-reference to external technical document (Service Bulletin 32-200)","No nested conditions, exceptions, or defined terms section","Clear, single-purpose safety directive with straightforward timeline"],"plain_english_summary":"This is an **Airworthiness Directive** — a mandatory safety order issued by Australia's Civil Aviation Safety Authority (CASA) that requires specific aircraft owners and operators to inspect their planes for dangerous cracks.\n\n**What it does:**\n- Requires inspection of the **main landing gear jack attachment bracket** on certain British Aerospace BAe 125 series aircraft\n- These brackets are metal fittings that connect the hydraulic jack (the mechanism that raises and lowers the landing gear) to the aircraft structure\n\n**Who it affects:**\n- Owners and operators of **all HS/DH/BH 125 model aircraft** that have been modified with long-range fuel tanks (specific modification number 255640)\n\n**Why it matters:**\n- Cracks have been found in these brackets and nearby door structure on aircraft overseas\n- If these brackets fail, the main landing gear doors may not open properly\n- This could prevent the landing gear from extending — meaning the plane couldn't land safely with its wheels down\n\n**When action is required:**\n- **High-use aircraft** (more than 3,000 landings by July 1984): Must complete inspection by 30 September 1984\n- **Lower-use aircraft** (fewer than 3,000 landings): Must inspect before reaching 3,000 total landings\n\n**How to comply:**\n- Follow the inspection procedures in **British Aerospace Service Bulletin 32-200**"}},"importantCases":[],"_links":{"self":"/api/acts/ad-hs-125-65-main-landing-gear-jack-attachment-bracket-inspection","history":"/api/acts/ad-hs-125-65-main-landing-gear-jack-attachment-bracket-inspection/history","analysis":"/api/acts/ad-hs-125-65-main-landing-gear-jack-attachment-bracket-inspection/analysis","conflicts":"/api/acts/ad-hs-125-65-main-landing-gear-jack-attachment-bracket-inspection/conflicts","importantCases":"/api/acts/ad-hs-125-65-main-landing-gear-jack-attachment-bracket-inspection/important-cases","documents":"/api/acts/ad-hs-125-65-main-landing-gear-jack-attachment-bracket-inspection/documents"}}