{"id":"F2006B04384","name":"AD/BELL 205/48 - Fuselage Main Beams Splice - Modification","slug":"ad-bell-205-48-fuselage-main-beams-splice-modification","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":44209,"registerId":"commonwealth-F2006B04384-current","compilationNumber":null,"startDate":"2026-04-02","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/BELL 205/48 - Fuselage Main Beams Splice - 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\nBell Helicopter Textron 205 Series Helicopters\n\n \n\nAD/BELL 205/48 Fuselage Main Beams Splice - Modification 4/80\n\nApplicability: All model 205A-1 with S/Nos. 30001 to 30287 and 30289 to 30296. Documents:  1. Bell Technical Bulletin No. 205-79-34; or\n\n2. FAA AD 80-03-07 Amdt. 39-3681.\n\n \n\nCompliance: Unless already accomplished, before 3 April 1980.\n\n \n\nBackground:  At manufacture aluminium rivets were installed in the subject splice instead of Monel rivets.\n","sortOrder":0}],"analysis":{"kimi_summary":{"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This is a discrete, time-bound safety directive with a single specific purpose. It has not expanded beyond its original scope of addressing the incorrect rivet installation in the specified airframe splice."},"complexity_factors":["Very short document (under 200 words)","Only 4 defined elements: applicability range, two reference documents, and compliance deadline","No cross-references to other legislation or regulations beyond the parent Civil Aviation Regulations 1988","Single, unambiguous compliance action with clear deadline","No conditional logic, exceptions, or nested provisions"],"plain_english_summary":"This is an **Airworthiness Directive (AD)** — essentially a mandatory safety order issued by Australia's Civil Aviation Safety Authority (CASA) for specific Bell 205 helicopters.\n\n**What it does:**\n- Requires owners/operators to **modify the fuselage main beams splice** on certain Bell 205A-1 helicopters\n- The fix addresses a manufacturing error where **aluminium rivets were incorrectly installed instead of stronger Monel rivets** (Monel is a nickel-copper alloy more resistant to corrosion and fatigue)\n\n**Who it affects:**\n- Owners and operators of Bell 205A-1 helicopters with **serial numbers 30001 to 30287 and 30289 to 30296**\n\n**Why it matters:**\n- Using the wrong rivet material in a critical structural splice could lead to **structural failure** — this is a safety-of-flight issue affecting the helicopter's airframe integrity\n- The directive had a **hard deadline of 3 April 1980** for compliance\n\n**How to comply:**\n- Follow either **Bell Technical Bulletin 205-79-34** or **FAA AD 80-03-07** (the equivalent US safety order)"},"flash_summary":{"complexity_score":2,"scope_assessment":{"changed":false,"description":"The text sets a clear, limited scope: specified Bell 205A-1 serial numbers must have the fuselage main beams splice modified by the stated date. The directive does not indicate any expansion or narrowing of scope relative to an earlier instrument within the text provided."},"complexity_factors":["Narrow applicability limited to specified serial numbers (clear targeting reduces complexity)","Single, short compliance action (modify splice/rivets) rather than multiple conditional steps","Fixed compliance deadline (before 3 April 1980) simplifies scheduling but reduces flexibility","Procedural detail delegated to external documents (Bell Technical Bulletin or FAA AD), requiring operators to consult those documents","No multiple compliance options or certification pathways in the directive itself"],"plain_english_summary":"This directive mandates modification of the fuselage main beam splice on specified Bell 205A-1 helicopters (listed serial numbers) to replace/correct aluminium rivets installed at manufacture with the proper rivets, using Bell Technical Bulletin No. 205-79-34 or FAA AD 80-03-07. Owners/operators must perform and pay for the work before 3 April 1980 to restore compliance and address the manufacturing error that affects airworthiness."}},"importantCases":[],"_links":{"self":"/api/acts/ad-bell-205-48-fuselage-main-beams-splice-modification","history":"/api/acts/ad-bell-205-48-fuselage-main-beams-splice-modification/history","analysis":"/api/acts/ad-bell-205-48-fuselage-main-beams-splice-modification/analysis","conflicts":"/api/acts/ad-bell-205-48-fuselage-main-beams-splice-modification/conflicts","importantCases":"/api/acts/ad-bell-205-48-fuselage-main-beams-splice-modification/important-cases","documents":"/api/acts/ad-bell-205-48-fuselage-main-beams-splice-modification/documents"}}