{"id":"F2007L04765","name":"AD/PA-28/33 - Front Seat Restraint Installation - Modification - CANCELLED","slug":"ad-pa-28-33-front-seat-restraint-installation-modification-cancelled","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"repealed","isInForce":false,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":71298,"registerId":"commonwealth-F2007L04765-current","compilationNumber":null,"startDate":"2026-04-02","status":"Repealed","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"Piper PA-28 Series Aeroplanes","sectionType":"division","heading":"Piper PA-28 Series Aeroplanes","content":"### Piper PA-28 Series Aeroplanes\n\n| AD/PA-28/33 | Front Seat Restraint Installation - Modification | 1/2008 |\n| ----------- | ------------------------------------------------ | ------ |\n\n| Requirement: | CANCELLED.                                                                                                                                                                   |\n| ------------ | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |\n|              | This AD is cancelled on 17 January 2008.                                                                                                                                     |\n| Background:  | This AD was issued in 1971 to require the installation of upper torso restraint on aircraft certified prior to 1967. This AD has been replaced by AD/GENERAL/74 Amendment 1. |\n\n![](image.001.png)\n\nDavid Villiers  \nDelegate of the Civil Aviation Safety Authority\n\n22 November 2007","sortOrder":0},{"sectionNumber":"AD/PA-28/33","sectionType":"part","heading":"AD/PA-28/33","content":"## AD/PA-28/33","sortOrder":1},{"sectionNumber":"Front Seat Restraint Installation - Modi","sectionType":"part","heading":"Front Seat Restraint Installation - Modification","content":"## Front Seat Restraint Installation - Modification","sortOrder":2},{"sectionNumber":"1/2008","sectionType":"part","heading":"1/2008","content":"## 1/2008","sortOrder":3}],"analysis":{"kimi_summary":{"_metrics":{"model":"kimi-k2.5","source":"moonshot-batch","completionTokens":1642},"content_quality":"ok","complexity_score":1,"scope_assessment":{"changed":true,"description":"This instrument originally mandated specific physical modifications (shoulder harness installation) for PA-28 aircraft. This version eliminates that regulatory scope entirely, converting the directive into a cancellation notice that references a replacement general directive (AD/GENERAL/74), thereby shifting responsibility for restraint requirements to a different instrument."},"complexity_factors":["Single operative provision (cancellation notice)","No defined terms or interpretive sections","No conditional logic or exceptions","Extremely brief (under 100 words of substance)","No cross-referencing complexity (only a single reference to the replacement directive)"],"plain_english_summary":"**What this is:** A cancelled Airworthiness Directive (AD) — a mandatory safety rule that once applied to specific aircraft.\n\n**What it used to do:** Originally issued in 1971, this rule required owners of Piper PA-28 aircraft (light, single-engine planes) to install **upper torso restraints** (shoulder harnesses) in the front seats if their plane was certified before 1967.\n\n**What it does now:** **Nothing.** This directive was officially cancelled on 17 January 2008.\n\n**Why it matters:** If you own or operate a Piper PA-28, you no longer need to check this specific rule. The old requirement has been replaced by a newer, broader safety rule (**AD/GENERAL/74 Amendment 1**) that applies to multiple aircraft types. You should check that newer directive instead to see what restraint requirements currently apply to your aircraft."}},"importantCases":[],"_links":{"self":"/api/acts/ad-pa-28-33-front-seat-restraint-installation-modification-cancelled","history":"/api/acts/ad-pa-28-33-front-seat-restraint-installation-modification-cancelled/history","analysis":"/api/acts/ad-pa-28-33-front-seat-restraint-installation-modification-cancelled/analysis","conflicts":"/api/acts/ad-pa-28-33-front-seat-restraint-installation-modification-cancelled/conflicts","importantCases":"/api/acts/ad-pa-28-33-front-seat-restraint-installation-modification-cancelled/important-cases","documents":"/api/acts/ad-pa-28-33-front-seat-restraint-installation-modification-cancelled/documents"}}