{"id":"F2006B02742","name":"AD/B727/41 - Outboard Fuel Tank Access Door Bonding - Modification","slug":"ad-b727-41-outboard-fuel-tank-access-door-bonding-modification","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":42084,"registerId":"commonwealth-F2006B02742-current","compilationNumber":null,"startDate":"2026-04-01","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/B727/41 - Outboard Fuel Tank Access Door Bonding - 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)  Boeing 727 Series Aeroplanes\n\n \n\nAD/B727/41  Outboard Fuel Tank Access Door Bonding - Modification\n\n\n5/67\n\n \n\nApplicability: All models. Document: Boeing SB No. 28-28. Compliance: Forthwith.\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\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 addressing a specific technical modification. It has not expanded beyond its original purpose of mandating a fuel tank bonding modification for Boeing 727 aircraft."},"complexity_factors":["Extremely short document (approximately 100 words of substantive content)","Only 4 defined elements: applicability, document reference, compliance deadline, and subject matter","No cross-references to other legislation or regulations beyond the enabling Civil Aviation Regulations 1998","No conditional logic, exceptions, or nested provisions","Single mandatory action with immediate effect","Standardised AD format with minimal procedural detail"],"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) for specific aircraft.\n\n**What it requires:** All Boeing 727 aircraft must be modified to fix a bonding (electrical connection) issue with the outboard fuel tank access doors. The fix must be done using Boeing Service Bulletin No. 28-28.\n\n**Who it affects:** Owners and operators of all Boeing 727 series aeroplanes.\n\n**When it must be done:** Immediately (\"Forthwith\").\n\n**Why it matters:** Proper electrical bonding of fuel tank access doors is critical for safety. Poor bonding can create static electricity sparks, which near fuel vapours poses explosion and fire risks. This directive ensures a known safety defect is corrected without delay."},"flash_summary":{"complexity_score":2,"scope_assessment":{"changed":false,"description":"The supplied text sets a single mandatory modification requirement for all Boeing 727 models and gives an immediate compliance date. The excerpt contains no indication that the scope of the requirement has been altered from any prior instrument or intent; it simply prescribes the modification per Boeing SB No. 28-28 to be done forthwith. No evidence in the text indicates a change from an original intent."},"complexity_factors":["Very short directive with a single, clear mandatory action (modification).","Applicability is broad but simple: applies to all Boeing 727 models (no model-by-model conditions). (Applicability: All models.)","Compliance timing is immediate (‘forthwith’), increasing operational urgency but not procedural complexity. (Compliance: Forthwith.)","Procedural detail is absent in the AD itself; compliance depends on an external technical document (Boeing SB No. 28-28), which adds a dependency but not internal complexity. (Document: Boeing SB No. 28-28.)","No exceptions, phased compliance, or alternative methods are provided in the supplied text, reducing branching complexity.","Regulatory context (Civil Aviation Regulations 1998 / CASA) implies enforceability but specific enforcement mechanisms are not included here."],"plain_english_summary":"This AD mandates immediate installation of “Outboard Fuel Tank Access Door Bonding” on all Boeing 727 models, to be carried out per Boeing Service Bulletin No. 28‑28. It binds aircraft owners/operators under the civil aviation regulatory framework, creating near‑term costs, labour and downtime to schedule the work. The AD text provides no explanatory safety rationale, so the stated purpose cannot be verified from the excerpt."}},"importantCases":[],"_links":{"self":"/api/acts/ad-b727-41-outboard-fuel-tank-access-door-bonding-modification","history":"/api/acts/ad-b727-41-outboard-fuel-tank-access-door-bonding-modification/history","analysis":"/api/acts/ad-b727-41-outboard-fuel-tank-access-door-bonding-modification/analysis","conflicts":"/api/acts/ad-b727-41-outboard-fuel-tank-access-door-bonding-modification/conflicts","importantCases":"/api/acts/ad-b727-41-outboard-fuel-tank-access-door-bonding-modification/important-cases","documents":"/api/acts/ad-b727-41-outboard-fuel-tank-access-door-bonding-modification/documents"}}