{"id":"F2006B11288","name":"AD/ML-M4/2 - Attachment of Fuselage Fabric to Upper Windshield Channel - Modification","slug":"ad-ml-m4-2-attachment-of-fuselage-fabric-to-upper-windshield-channel-modification","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":57101,"registerId":"commonwealth-F2006B11288-current","compilationNumber":null,"startDate":"2026-04-02","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/ML-M4/2 - Attachment of Fuselage Fabric to Upper Windshield Channel - 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)  Maule M-4 Series Aeroplanes\n\n \n\nAD/ML-M4/2 Attachment of Fuselage Fabric to Upper\n\nWindshield Channel - Modification\n\nApplicability: All model M-4-210 with S/Nos. 1001 to 1028. Document:  Maule SL No. 8.\n\nCompliance: 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\n \n\n\n11/67\n","sortOrder":0}],"analysis":{"kimi_summary":{"content_quality":"ok","complexity_score":1,"scope_assessment":{"changed":false,"description":"This is a discrete, single-issue airworthiness directive from 1967 (indicated by '11/67' at the bottom). It addresses one specific technical modification for a narrow subset of aircraft. There is no indication of scope creep; it remains precisely targeted at the original safety concern regarding fuselage fabric attachment."},"complexity_factors":["Extremely short document — approximately 100 words of substantive content","No defined terms section — all language is plain and technical but unambiguous","No cross-references to other legislation or regulations beyond the enabling authority (Civil Aviation Regulations 1998, Part 39)","Single, unconditional requirement: apply the modification per the referenced service letter","No exceptions, exemptions, or conditional logic","Simple applicability test: specific model and serial number range"],"plain_english_summary":"This is an **Airworthiness Directive (AD)** — essentially a mandatory safety order issued by Australia's Civil Aviation Safety Authority (CASA).\n\n**What it does:**\nIt requires owners and operators of specific Maule M-4 aeroplanes to carry out a **modification** to how the fabric covering the fuselage (the aircraft's body) attaches to the upper windshield channel (the frame around the top of the front window).\n\n**Who it affects:**\n- **Aircraft:** All Maule M-4-210 model aeroplanes with serial numbers 1001 through 1028\n- **People:** Owners, operators, and maintenance organisations responsible for these specific aircraft\n\n**Why it matters:**\nAirworthiness Directives are issued when a safety issue is discovered that could affect flight safety. This particular directive addresses a potential structural or attachment problem with the fabric-to-frame connection near the windshield. The word \"Forthwith\" as the compliance deadline means **do it immediately** — there's no grace period because the risk is considered urgent.\n\n**What must be done:**\nThe modification must follow **Maule Service Letter No. 8** — a technical document from the aircraft manufacturer detailing exactly how to make the repair or alteration."},"flash_summary":{"complexity_score":2,"scope_assessment":{"changed":false,"description":"The AD text imposes a mandatory modification on a defined set of aircraft and does not indicate any expansion or narrowing of regulatory scope beyond that specification. It applies only to M-4-210 aeroplanes with serial numbers 1001–1028 and requires compliance forthwith, referencing Maule SL No. 8 for the technical instructions. The document provides no information that would indicate a change from the instrument’s original stated scope. (Applicability; Document; Compliance)"},"complexity_factors":["Very narrow applicability: single model and a specific serial number range (S/Ns 1001–1028). (Applicability)","Minimal procedural text in the AD; technical work is delegated to an external manufacturer Service Letter (Maule SL No. 8), requiring cross-reference. (Document)","Immediate compliance requirement (“Forthwith”) creates urgency but adds no phased compliance options. (Compliance)","Regulatory basis set out by Part 39 Schedule of Airworthiness Directives, which is standard but requires operators to follow regulatory processes. (Header)"],"plain_english_summary":"This Airworthiness Directive requires an immediate physical modification—“Attachment of Fuselage Fabric to Upper Windshield Channel”—for Maule M-4-210 aeroplanes serial numbers 1001–1028, citing Maule Service Letter No. 8 for the technical work. Owners/operators of those specific aircraft must arrange and pay for the work; the AD itself sets the action and timing but gives no explanation of the underlying condition, cost estimates, or technical details beyond the service letter."}},"importantCases":[],"_links":{"self":"/api/acts/ad-ml-m4-2-attachment-of-fuselage-fabric-to-upper-windshield-channel-modification","history":"/api/acts/ad-ml-m4-2-attachment-of-fuselage-fabric-to-upper-windshield-channel-modification/history","analysis":"/api/acts/ad-ml-m4-2-attachment-of-fuselage-fabric-to-upper-windshield-channel-modification/analysis","conflicts":"/api/acts/ad-ml-m4-2-attachment-of-fuselage-fabric-to-upper-windshield-channel-modification/conflicts","importantCases":"/api/acts/ad-ml-m4-2-attachment-of-fuselage-fabric-to-upper-windshield-channel-modification/important-cases","documents":"/api/acts/ad-ml-m4-2-attachment-of-fuselage-fabric-to-upper-windshield-channel-modification/documents"}}