{"id":"F2006B10530","name":"AD/HS 125/88 - HF Aerial System","slug":"ad-hs-125-88-hf-aerial-system","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":116323,"registerId":"commonwealth-F2006B10530-current","compilationNumber":null,"startDate":"2026-04-03","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/HS 125/88 - HF Aerial System","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 125/88 HF Aerial System 8/87\n\nThis AD contents has been removed from the listing because the aircraft model is not currently on the register.\n","sortOrder":0}],"analysis":{"kimi_summary":{"content_quality":"ok","complexity_score":1,"scope_assessment":{"changed":false,"description":"This appears to be a historical administrative record rather than active legislation. The scope has not expanded; rather, it has been nullified by the deregistration of affected aircraft."},"complexity_factors":["Extremely short document — essentially a stub entry","No operative provisions, conditions, or requirements currently in force","No defined terms, cross-references, or procedural steps","Content consists solely of metadata and a removal notice"],"plain_english_summary":"This is an **Airworthiness Directive (AD)** — essentially a safety order issued by Australia's Civil Aviation Safety Authority (CASA). \n\n**What it does:**\n- Originally required specific safety actions for the **HF (high frequency) radio aerial system** on **British Aerospace BAe 125 series aircraft** — a type of business jet.\n- The directive has since been **removed from active status** because no BAe 125 aircraft are currently registered in Australia.\n\n**Who it affects (or affected):**\n- Owners and operators of BAe 125 aircraft in Australia.\n- Maintenance engineers working on these aircraft.\n\n**Why it matters:**\nAirworthiness Directives are legally binding safety instructions. When active, compliance was mandatory. This particular directive is now inactive — not because the safety issue was necessarily resolved, but because there are no longer any affected aircraft on the Australian register to enforce it against. If a BAe 125 were re-registered in Australia, CASA would need to reactivate or replace this directive."},"flash_summary":{"complexity_score":2,"scope_assessment":{"changed":true,"description":"The recorded scope has changed from being a listed AD specific to the British Aerospace BAe 125 Series (AD/HS 125/88, HF Aerial System) to having that AD content removed from the published listing on the stated ground that the aircraft model is not currently on the register. The supplied text shows the AD is no longer present in the Schedule of Airworthiness Directives for currently-registered aircraft of that model."},"complexity_factors":["Entry is an administrative removal notice rather than a substantive regulatory text","Very short source text with a single clear reason given (model not on the register)","Limited number of stakeholders referenced (BAe 125 Series operators) and no operative requirements in the supplied text","Decision and authority are plainly identified in the document header (CASA / Schedule of Airworthiness Directives)"],"plain_english_summary":"The entry records that Airworthiness Directive AD/HS 125/88 (HF Aerial System) for British Aerospace BAe 125 series has been removed from CASA’s Schedule of Airworthiness Directives because that aircraft model is not currently on the register. Practically, owners/operators of BAe 125s face no active listing obligation from this AD as recorded; the removal is an administrative action tied to registry status."}},"importantCases":[],"_links":{"self":"/api/acts/ad-hs-125-88-hf-aerial-system","history":"/api/acts/ad-hs-125-88-hf-aerial-system/history","analysis":"/api/acts/ad-hs-125-88-hf-aerial-system/analysis","conflicts":"/api/acts/ad-hs-125-88-hf-aerial-system/conflicts","importantCases":"/api/acts/ad-hs-125-88-hf-aerial-system/important-cases","documents":"/api/acts/ad-hs-125-88-hf-aerial-system/documents"}}