{"id":"F2006B01928","name":"AD/A320/38 - Nose Section - Structural Reinforcement","slug":"ad-a320-38-nose-section-structural-reinforcement","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":41150,"registerId":"commonwealth-F2006B01928-current","compilationNumber":null,"startDate":"2026-04-01","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/A320/38 - Nose Section - Structural Reinforcement","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)  \nAirbus Industrie A319, A320 and A321 Series Aeroplanes\n\nAD/A320/38 Nose Section \\- Structural Reinforcement 9/94\n\nApplicability: A320 Aircraft, Serial Numbers 5 to 8 inclusive and 10 to 24 inclusive. Requirement: Replace the existing angles and fittings at fuselage frames 1 and 2 (fuselage stations\n\n350 and 385) in accordance with the Accomplishment Instructions of Airbus Industrie\n\nService Bulletin A320-53-1002.\n\nNote: DGAC AD 92-203-032(B) refers.\n\nCompliance: Accomplish the applicable modifications before 12000 flights for aircraft serial numbers 5 to 8 and 10 to 12 inclusive and before 15000 flights for aircraft serial\n\nnumbers 13 to 24 inclusive.\n\nThis AD is effective from 18 August 1994.\n\nBackground: Fatigue tests have shown that the web and fitting at fuselage frame 2 are susceptible to fatigue damage. The existing fittings are therefore replaced with redesigned fittings providing an improved fatigue life.","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 structural fatigue issue identified in early-production A320 aircraft. The scope remains precisely limited to the original safety concern and affected airframe serial numbers. There is no evidence of scope creep; the document executes exactly what it sets out to do."},"complexity_factors":["Very short document (approximately 150 words)","Only 4 defined elements: applicability (specific serial numbers), requirement (single service bulletin reference), compliance (two flight count thresholds), and effective date","No cross-references to other legislation or regulations beyond a single note referencing a French aviation authority directive (DGAC AD 92-203-032(B))","Simple conditional logic: two distinct compliance deadlines based on serial number ranges","Single technical action required (replacement of specific parts per manufacturer instructions)","No nested exceptions or layered definitions"],"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 aircraft.\n\n**What it does:**\nOrders owners/operators of certain Airbus A320 planes to replace structural parts in the nose section (specifically metal angles and fittings at two fuselage frames) with stronger, redesigned versions.\n\n**Who it affects:**\n- **Aircraft:** Airbus A320 planes with serial numbers 5–8 and 10–24 (not serial number 9, and not A319 or A321 models despite the header mentioning them)\n- **People:** Airlines, aircraft operators, and maintenance crews responsible for these specific planes\n\n**Why it matters:**\nFatigue testing revealed that the original fittings at fuselage frame 2 could develop cracks over time due to repeated stress during flights. This is a safety risk because structural failure in the nose section could compromise the aircraft's integrity. The directive mandates preventive repairs before the planes reach certain flight counts (12,000 or 15,000 flights depending on the serial number).\n\n**Key deadlines:**\n- Serial numbers 5–8 and 10–12: Must fix before 12,000 flights\n- Serial numbers 13–24: Must fix before 15,000 flights\n\n**The bottom line:** If you own or operate one of these 21 specific A320 aircraft, you must get this structural upgrade done by the specified flight hour limits to keep flying legally in Australia."},"flash_summary":{"complexity_score":3,"scope_assessment":{"changed":false,"description":"The AD’s scope is a focused, prescriptive safety measure that applies only to A320 aeroplanes with serial numbers 5–8 and 10–24 and requires replacement of specific fittings at fuselage frames 1 and 2 by stated flight-count thresholds. That matches the stated safety objective in the Background (addressing fatigue susceptibility at fuselage frame 2) and does not broaden or narrow the population or tasks beyond what the instrument prescribes (Applicability, Requirement, Compliance, Background)."},"complexity_factors":["Limited applicability to a defined set of serial numbers (Applicability)","Compliance deadlines expressed as flight-count thresholds that differ by serial-number group (Compliance)","Mandatory replacement must follow an external technical document (Airbus Service Bulletin A320-53-1002) (Requirement)","Technical subject matter (structural fittings and fatigue life) requires maintenance engineering competence to implement (Requirement, Background)","Regulatory cross-reference to a foreign AD (DGAC AD 92-203-032(B)) which may affect harmonisation or interpretation (Note)"],"plain_english_summary":"This AD requires operators of specific Airbus A320s (serial nos. 5–8 and 10–24) to replace the metal angles and fittings around the nose fuselage at frames 1 and 2, done exactly per Airbus Service Bulletin A320-53-1002. It sets flight-count compliance limits (earlier thresholds for some serials) and was issued by CASA effective 18 Aug 1994.\n\nThe measure responds to fatigue testing showing susceptibility at frame 2 and aims to improve fatigue life by mandating the redesigned fittings."}},"importantCases":[],"_links":{"self":"/api/acts/ad-a320-38-nose-section-structural-reinforcement","history":"/api/acts/ad-a320-38-nose-section-structural-reinforcement/history","analysis":"/api/acts/ad-a320-38-nose-section-structural-reinforcement/analysis","conflicts":"/api/acts/ad-a320-38-nose-section-structural-reinforcement/conflicts","importantCases":"/api/acts/ad-a320-38-nose-section-structural-reinforcement/important-cases","documents":"/api/acts/ad-a320-38-nose-section-structural-reinforcement/documents"}}