{"id":"F2006B11304","name":"AD/ML-M5/7 - Fuel Crossover Supply Line","slug":"ad-ml-m5-7-fuel-crossover-supply-line","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":57141,"registerId":"commonwealth-F2006B11304-current","compilationNumber":null,"startDate":"2026-04-02","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/ML-M5/7 - Fuel Crossover Supply Line","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-5 Series Aeroplanes\n\n \n\nAD/ML-M5/7 Fuel Crossover Supply Line 9/86 DM\n\nApplicability: All model M-5-220C S/No 5001C to 5057C, M-5-210C S/No 6001C to 6206C, M-5- 235C S/No 7001C to 7045C 7047C to 7052C, M-5-180C S/No 8001C to 8014C\n\n8016C to 8019C and 8021C and any model retrofitted with 20`/40` flap ratchet in accordance with Service Letters Numbers 44,46,48 or 49.\n\n \n\nRequirement: Inspect and modify in accordance with Maule SB No. 7. Compliance:  Within 10 hours time in service after 22 August 1986.\n\nBackground:  There is a possibility that the flap control handle could be pulled against the fuel crossover supply line of those aircraft with front routed fuel lines which may crush the line and restrict fuel flow.\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, targeted safety directive addressing a specific mechanical defect in a specific aircraft type. It has not expanded beyond its original purpose of mandating a particular fuel line inspection and modification."},"complexity_factors":["Single, specific technical requirement (inspect and modify per referenced service bulletin)","Limited applicability — clearly defined by model, serial number ranges, and specific retrofit conditions","No nested exceptions or conditional logic","Simple compliance deadline (10 hours time in service after fixed date)","Only one defined term implicitly used ('time in service')","No cross-references to other legislation or regulations beyond the parent Civil Aviation Regulations 1988","Background explanation provided in plain language"],"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). Think of it as a \"recall notice\" for aircraft, but legally binding.\n\n**What it does:** It requires owners and operators of specific Maule M-5 series aeroplanes to inspect and modify the fuel crossover supply line. The fix must follow instructions in Maule Service Bulletin No. 7.\n\n**Who it affects:** Specific Maule M-5 aircraft models with particular serial numbers, plus any model retrofitted with certain flap ratchet systems (identified by Service Letters 44, 46, 48, or 49). This covers planes with front-routed fuel lines where the flap control handle could physically contact the fuel line.\n\n**Why it matters:** There's a safety risk that the flap control handle could be pulled against the fuel line, crushing it and restricting fuel flow — potentially causing engine failure due to fuel starvation. The directive gives a hard deadline: compliance within 10 hours of flight time after 22 August 1986.\n\n**The bottom line:** If you own or operate one of these specific Maule aircraft, you must get this inspection and modification done within the specified flight hours, or the aircraft cannot legally fly."},"flash_summary":{"complexity_score":2,"scope_assessment":{"changed":false,"description":"The instrument applies to the listed M‑5 models, serial ranges and specified retrofits and mandates a one‑off inspect/modify action per the service bulletin. The text contains no indication the scope was altered from its original specific applicability."},"complexity_factors":["Narrow applicability by specific model and serial‑number ranges and retrofits (Applicability).","Single, short compliance period: 10 hours TIS after 22 August 1986 (Compliance).","Action requires following an external document (Maule Service Bulletin No.7), adding dependence on manufacturer instructions (Requirement).","Practical compliance needs qualified maintenance personnel and possible parts or routing changes, imposing cost on owners/operators.","Administrative burden: owners/operators must schedule work promptly and retain compliance evidence for regulator inspection.","No ongoing monitoring or complex reporting obligations specified—one‑off inspection/modify task."],"plain_english_summary":"This directive requires owners/operators of specified Maule M‑5 series aeroplanes (listed serial ranges and certain flap‑ratchet retrofits) to inspect and modify the front‑routed fuel crossover supply line in accordance with Maule Service Bulletin No.7, within 10 hours’ time‑in‑service after 22 August 1986 (Requirement; Compliance). Owners/operators must arrange and pay for the inspection/modification; the AD’s stated purpose is to prevent the flap control handle from crushing the line and restricting fuel flow (Background)."}},"importantCases":[],"_links":{"self":"/api/acts/ad-ml-m5-7-fuel-crossover-supply-line","history":"/api/acts/ad-ml-m5-7-fuel-crossover-supply-line/history","analysis":"/api/acts/ad-ml-m5-7-fuel-crossover-supply-line/analysis","conflicts":"/api/acts/ad-ml-m5-7-fuel-crossover-supply-line/conflicts","importantCases":"/api/acts/ad-ml-m5-7-fuel-crossover-supply-line/important-cases","documents":"/api/acts/ad-ml-m5-7-fuel-crossover-supply-line/documents"}}