{"id":"F2007L02441","name":"AD/ATR 42/16 - Windshield Frame","slug":"ad-atr-42-16-windshield-frame","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":67894,"registerId":"commonwealth-F2007L02441-current","compilationNumber":null,"startDate":"2026-04-02","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"Avions de Transport Regional ATR 42 Seri","sectionType":"division","heading":"Avions de Transport Regional ATR 42 Series Aeroplanes","content":"### Avions de Transport Regional ATR 42 Series Aeroplanes\n\n| AD/ATR 42/16 | Windshield Frame | 9/2007 |\n| ------------ | ---------------- | ------ |\n\n| Applicability: | Model ATR 42 -200, -300, and -320 aircraft, without modification 1392 incorporated.                                                               |\n| -------------- | ------------------------------------------------------------------------------------------------------------------------------------------------- |\n| Requirement:   | Action in accordance with the Requirements of DGAC AD 95-126-061(B).                                                                              |\n| Compliance:    | Before the accumulation of 24,000 flights.                                                                                                        |\n|                | This Airworthiness Directive becomes effective on 30 August 2007.                                                                                 |\n| Background:    | This Directive requires inspection and modification of the windshield frame in order to prevent the initiation and development of fatigue damage. |\n\n![](image.001.png)  \nDavid Villiers  \nDelegate of the Civil Aviation Safety Authority\n\n10 July 2007","sortOrder":0},{"sectionNumber":"AD/ATR 42/16","sectionType":"part","heading":"AD/ATR 42/16","content":"## AD/ATR 42/16","sortOrder":1},{"sectionNumber":"Windshield Frame","sectionType":"part","heading":"Windshield Frame","content":"## Windshield Frame","sortOrder":2},{"sectionNumber":"9/2007","sectionType":"part","heading":"9/2007","content":"## 9/2007","sortOrder":3}],"analysis":{"kimi_summary":{"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This is a discrete, targeted safety directive addressing a specific airworthiness concern (windshield frame fatigue) for a defined aircraft population. It has not expanded beyond its original technical safety purpose."},"complexity_factors":["Very short document (under 200 words of substantive content)","Single technical requirement referencing an external standard (DGAC AD 95-126-061(B))","Simple applicability test: three specific model variants, one exclusion criterion (Mod 1392)","Single compliance trigger: flight hours accumulation (24,000 flights)","No defined terms section, no cross-references to other legislation, no conditional exceptions","Clear, singular purpose with straightforward background explanation"],"plain_english_summary":"This is an **Airworthiness Directive (AD)** — a mandatory safety order issued by Australia's aviation regulator (CASA) for specific aircraft.\n\n**What it does:**\n- Requires owners/operators of certain ATR 42 model aircraft (-200, -300, and -320 series) to inspect and modify the **windshield frame** (the structure holding the cockpit windows).\n- The goal is to stop **fatigue damage** from developing — tiny cracks that grow over repeated flights and could eventually cause structural failure.\n\n**Who it affects:**\n- Operators of ATR 42 aircraft that **haven't** had a specific factory modification (Mod 1392) installed.\n\n**What must be done:**\n- Follow the technical instructions in a French aviation safety document (DGAC AD 95-126-061(B)).\n- Complete the work **before the aircraft reaches 24,000 flights**.\n\n**Why it matters:**\nFatigue damage in the windshield frame could compromise cockpit integrity and flight safety. This directive prevents potential accidents by catching the problem early."},"flash_summary":{"complexity_score":4,"scope_assessment":{"changed":false,"description":"The instrument explicitly targets ATR 42 -200, -300 and -320 aeroplanes without modification 1392 and requires compliance per DGAC AD 95-126-061(B) before 24,000 flights. The source text provides no indication that the AD widens or narrows that stated applicability or that it alters its original scope."},"complexity_factors":["Conditional applicability limited to ATR 42 -200, -300, -320 without modification 1392 (Applicability)","Mandates action by reference to an external DGAC AD rather than prescribing procedures directly (Requirement)","Compliance tied to flight-count threshold (24,000 flights) requiring operator tracking and recordkeeping (Compliance)","Technical maintenance work (inspection and modification of windshield frame) requiring specialist skills and parts (Background/Requirement)","Fixed effective date that may compress operator scheduling (Compliance: effective 30 August 2007)","Sparse procedural detail in the text increases reliance on the referenced DGAC document for implementation (Requirement)"],"plain_english_summary":"This directive requires owners/operators of ATR 42‑200, -300 and -320 aeroplanes (without modification 1392) to inspect and modify the windshield frame in accordance with DGAC AD 95‑126‑061(B). Compliance must occur before the aircraft accumulates 24,000 flights; the AD became effective 30 August 2007 (Applicability, Requirement, Compliance, Background). CASA frames the purpose as preventing initiation and development of fatigue damage; mechanically, operators pay for the inspection/modification, must track flight counts, and must follow the DGAC procedures specified by the AD (Requirement, Compliance)."}},"importantCases":[],"_links":{"self":"/api/acts/ad-atr-42-16-windshield-frame","history":"/api/acts/ad-atr-42-16-windshield-frame/history","analysis":"/api/acts/ad-atr-42-16-windshield-frame/analysis","conflicts":"/api/acts/ad-atr-42-16-windshield-frame/conflicts","importantCases":"/api/acts/ad-atr-42-16-windshield-frame/important-cases","documents":"/api/acts/ad-atr-42-16-windshield-frame/documents"}}