{"id":"F2006B02787","name":"AD/B727/83 - Mid-Cabin Galley Door Evacuation Slide - Inspection","slug":"ad-b727-83-mid-cabin-galley-door-evacuation-slide-inspection","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":42129,"registerId":"commonwealth-F2006B02787-current","compilationNumber":null,"startDate":"2026-04-01","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/B727/83 - Mid-Cabin Galley Door Evacuation Slide - 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)  Boeing 727 Series Aeroplanes\n\n \n\nAD/B727/83 Mid-Cabin Galley Door Evacuation Slide - Inspection\n\n\n1/79\n\n \n\nApplicability: All 727-100 series.\n\n \n\nDocument: 1. FAA AD 78-24-05 Amdt. 39-3355; or\n\n \n\n2. Boeing SB No. 727-25-A247.\n\n \n\nCompliance: Unless already accomplished, initially inspect within 300 hours time in service after 15 December 1978 and thereafter at intervals not exceeding 1500 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","sortOrder":0}],"analysis":{"kimi_summary":{"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This is a discrete, single-issue airworthiness directive focused specifically on evacuation slide inspection for one aircraft series. It has not expanded beyond its original narrow safety purpose."},"complexity_factors":["Extremely short document (approximately 150 words of substantive content)","Only 1 defined applicability criterion (aircraft model)","Simple binary compliance structure (initial inspection + recurring interval)","No nested exceptions or conditional logic","No cross-references to other Australian legislation or regulations beyond the enabling CAR 1998 Part 39","Single operational requirement with clear time-based triggers"],"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) that requires specific maintenance actions on aircraft.\n\n**What it does:** It orders owners and operators of **Boeing 727-100 series aircraft** to inspect the **evacuation slide** located at the **mid-cabin galley door**.\n\n**Why it matters:** Evacuation slides are critical emergency equipment. If they fail to deploy properly during an emergency evacuation, passengers and crew could be trapped or injured. This directive addresses a known safety issue to ensure the slide works when needed.\n\n**Who must comply:** Anyone operating a Boeing 727-100 aircraft in Australia.\n\n**What must be done:**\n- **First inspection:** Must be completed within **300 flight hours** after 15 December 1978 (if not already done)\n- **Ongoing inspections:** Must be repeated every **1,500 flight hours** thereafter\n\n**Technical references:** The directive points to two documents that explain exactly how to do the inspection:\n- A US Federal Aviation Administration (FAA) directive (AD 78-24-05)\n- A Boeing Service Bulletin (727-25-A247) — essentially the manufacturer's repair instructions"},"flash_summary":{"complexity_score":4,"scope_assessment":{"changed":false,"description":"Based on the text provided, the directive applies to all Boeing 727-100 series and requires periodic inspection of the mid-cabin galley door evacuation slide, with specified initial and recurring intervals. The instrument's scope as written is confined to that aircraft series and that inspection mandate; there is no indication within the text that its substantive scope was altered from the original purpose of imposing those inspections (Applicability; Compliance; Document)."},"complexity_factors":["Narrow, clearly defined applicability (all 727-100 series) reduces scope complexity (Applicability).","Clear, simple compliance timing (initial 300 hours after 15 Dec 1978; repeat no more than every 1,500 hours) reduces procedural complexity (Compliance).","The AD does not include technical inspection steps and instead cross-references external documents (FAA AD 78-24-05 or Boeing SB 727-25-A247), requiring operators to obtain and follow those texts (Document).","Key implementation details (recordkeeping, corrective actions, enforcement) are not provided in the AD text and are left to Part 39 and the referenced documents, increasing practical compliance complexity (header; Document).","The directive is dated and brief; verifying current applicability or supersession may require checking regulatory history, which adds administrative friction."],"plain_english_summary":"This airworthiness directive requires operators of all Boeing 727‑100 series aircraft to inspect the mid‑cabin galley door evacuation slide, using the procedures in FAA AD 78‑24‑05 Amdt. 39‑3355 or Boeing Service Bulletin 727‑25‑A247. An initial inspection was required within 300 hours TIS after 15 Dec 1978, with repeat inspections at intervals not exceeding 1,500 hours. It mandates recurring safety checks and places compliance costs and administrative burden on aircraft owners/operators."}},"importantCases":[],"_links":{"self":"/api/acts/ad-b727-83-mid-cabin-galley-door-evacuation-slide-inspection","history":"/api/acts/ad-b727-83-mid-cabin-galley-door-evacuation-slide-inspection/history","analysis":"/api/acts/ad-b727-83-mid-cabin-galley-door-evacuation-slide-inspection/analysis","conflicts":"/api/acts/ad-b727-83-mid-cabin-galley-door-evacuation-slide-inspection/conflicts","importantCases":"/api/acts/ad-b727-83-mid-cabin-galley-door-evacuation-slide-inspection/important-cases","documents":"/api/acts/ad-b727-83-mid-cabin-galley-door-evacuation-slide-inspection/documents"}}