{"id":"F2006B02378","name":"AD/AMD 50/11 - Engine Exhaust Duct Clamps","slug":"ad-amd-50-11-engine-exhaust-duct-clamps","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":41608,"registerId":"commonwealth-F2006B02378-current","compilationNumber":null,"startDate":"2026-04-01","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/AMD 50/11 - Engine Exhaust Duct Clamps","content":"COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 \\- 105 CIVIL AVIATION SAFETY AUTHORITY\n\nSCHEDULE OF AIRWORTHINESS DIRECTIVES\n\n![](image.001.png)  \nAMD Falcon 50 and 900 Series Aeroplanes\n\nAD/AMD 50/11 Engine Exhaust Duct Clamps 3/96\n\nApplicability: Model Mystere-Falcon 50 series aircraft serial numbers 2 through 216; equipped with engine exhaust duct attachment clamps part number (P/N) NH1002299-10 or NH1007763-10.\n\nRequirement: 1. For aircraft equipped with clamps P/N NH1002299-10, remove, discard and install exhaust duct attachment clamps in accordance with the technical requirements of Dassault Aviation Service Bulletin F50-229 (F50-54-13) Revision 1.\n\n2. For aircraft equipped with attachment clamps P/N NH1007763-10, remove, inspect and install exhaust duct attachment clamps in accordance with the technical requirements of Dassault Aviation Service Bulletin F50-229 (F50-54-13) Revision 1.\n\nNote: FAA AD 94-14-15 and DGAC AD 93-113-013(B) refer.\n\nCompliance: 1. Prior to 1 April 1996.\n\n2. Unless previously accomplished, prior to 1 June 1996.\n\nBackground: The manufacturer has advised of the possibility of cracks occurring in the engine exhaust clamps due to fatigue. This Directive mandates the replacement of existing clamps with reinforced clamps which have larger section bands and improved clamp resistance.\n\nThe manufacturer has further advised that some reinforced clamps have been stamped with the incorrect torque value, therefore this Directive mandates inspection of the clamping screw and engraved marking on the reinforced clamp.","sortOrder":0}],"analysis":{"flash_summary_failed":{"failed":true,"reason":"Unauthenticated. Configure AI_GATEWAY_API_KEY or use a provider module. Learn more: https://ai-sdk.dev/unauthenticated-ai-gateway","source":"analysis-cron"},"flash_summary":{"complexity_score":3,"scope_assessment":{"changed":false,"description":"The directive implements the manufacturer's corrective measures—replacement or inspection and installation of reinforced clamps—to mitigate clamp fatigue and incorrect torque markings. It does not broaden the set of affected aircraft beyond serial numbers 2–216 or add obligations beyond the specified removal/inspection/replacement procedures and compliance dates (Applicability; Requirement; Compliance; Background)."},"complexity_factors":["Narrow applicability to a single aircraft family and serial number range (Applicability).","Two distinct mandated actions depending on which part number is fitted: replacement for P/N NH1002299-10 and inspection/installation for P/N NH1007763-10 (Requirement 1–2).","Dependency on an external technical document for the how-to (Dassault Service Bulletin F50-229) creates procedural reliance (Requirement).","Two separate compliance deadlines increase scheduling and tracking burden (Compliance).","Additional inspection step to detect incorrect engraved torque markings adds verification work (Background).","Cross-references to foreign ADs (FAA AD 94-14-15; DGAC AD 93-113-013(B)) may require alignment with overseas records (Note)."],"plain_english_summary":"Requires operators of Mystere‑Falcon 50 series aircraft (serial numbers 2–216) fitted with exhaust‑duct clamps P/N NH1002299‑10 or NH1007763‑10 to remove and replace, or remove and inspect then install, those clamps following Dassault Service Bulletin F50‑229 (Requirement 1–2).\n\nOperators/owners pay for parts and labour; the Civil Aviation Safety Authority issued the directive; affected aircraft must comply by the dates stated (Prior to 1 April 1996 and Prior to 1 June 1996) to address reported fatigue cracks and incorrect torque markings (Applicability; Requirement; Compliance; Background)."},"kimi_summary":{"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This is a discrete airworthiness directive addressing a specific mechanical defect in specific aircraft models. It has not expanded beyond its original safety purpose."},"complexity_factors":["Very short document (under 300 words)","Only 2 defined part numbers to identify applicability","Simple conditional structure (if Part A, do X; if Part B, do Y)","No cross-references to other legislation (only references to manufacturer service bulletins and foreign aviation authority directives in a non-binding note)","Clear, single-purpose mandate with specific deadlines","No nested exceptions or complex definitions section"],"plain_english_summary":"This safety order for Dassault Falcon 50 and 900 series requires owners/operators to replace or inspect specific engine exhaust clamps to prevent fatigue cracks and manufacturing torque errors. \n\nClamps P/N NH1002299-10 must be removed and replaced with reinforced parts; P/N NH1007763-10 must be removed, checked for incorrect torque stamping, and reinstalled. Deadlines were before 1 Apr 1996 and 1 Jun 1996. Failure could cause exhaust failure, engine damage, fire, or loss of control."}},"importantCases":[],"_links":{"self":"/api/acts/ad-amd-50-11-engine-exhaust-duct-clamps","history":"/api/acts/ad-amd-50-11-engine-exhaust-duct-clamps/history","analysis":"/api/acts/ad-amd-50-11-engine-exhaust-duct-clamps/analysis","conflicts":"/api/acts/ad-amd-50-11-engine-exhaust-duct-clamps/conflicts","importantCases":"/api/acts/ad-amd-50-11-engine-exhaust-duct-clamps/important-cases","documents":"/api/acts/ad-amd-50-11-engine-exhaust-duct-clamps/documents"}}