{"id":"F2007L04817","name":"AD/CESSNA 150/20 - Front Seat Restraint Installations - CANCELLED","slug":"ad-cessna-150-20-front-seat-restraint-installations-cancelled","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"repealed","isInForce":false,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":71502,"registerId":"commonwealth-F2007L04817-current","compilationNumber":null,"startDate":"2026-04-02","status":"Repealed","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"Cessna 150, F150, 152 & F152 Series Aero","sectionType":"division","heading":"Cessna 150, F150, 152 & F152 Series Aeroplanes","content":"### Cessna 150, F150, 152 & F152 Series Aeroplanes\n\n| AD/CESSNA 150/20 | Front Seat Restraint Installations | 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 This AD has been replaced by AD/GENERAL/74 Amendment 1.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\n26 November 2007","sortOrder":0},{"sectionNumber":"AD/CESSNA 150/20","sectionType":"part","heading":"AD/CESSNA 150/20","content":"## AD/CESSNA 150/20","sortOrder":1},{"sectionNumber":"Front Seat Restraint Installations","sectionType":"part","heading":"Front Seat Restraint Installations","content":"## Front Seat Restraint Installations","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":2519},"content_quality":"ok","complexity_score":1,"scope_assessment":{"changed":true,"description":"This instrument has changed from imposing mandatory installation requirements for front seat restraints to cancelling those requirements. The obligations are now found in a general airworthiness directive (AD/GENERAL/74) applicable to all aircraft types rather than this model-specific rule."},"complexity_factors":["Single operative provision (cancellation)","No defined terms or interpretation section","No conditional logic or exceptions","Only one cross-reference (to the replacement directive)"],"plain_english_summary":"This document **cancels an old aircraft safety rule** that applied to specific Cessna aeroplanes.\n\n**What it used to require**\nOriginally issued in 1971, the rule required owners of Cessna 150, F150, 152 and F152 series aircraft (certified before 1967) to install **upper torso restraints** (shoulder harnesses) in the front seats.\n\n**What it does now**\nAs of 17 January 2008, this specific rule is **officially cancelled**.\n\n**Why?**\nThe requirement hasn't disappeared entirely—it's just been moved to a broader rule (**AD/GENERAL/74 Amendment 1**) that applies to all aircraft types, rather than having separate rules for each aircraft model.\n\n**Who is affected**\nOwners and operators of Cessna 150 and 152 series aircraft, though they must still comply with the general restraint requirements in the replacement directive."}},"importantCases":[],"_links":{"self":"/api/acts/ad-cessna-150-20-front-seat-restraint-installations-cancelled","history":"/api/acts/ad-cessna-150-20-front-seat-restraint-installations-cancelled/history","analysis":"/api/acts/ad-cessna-150-20-front-seat-restraint-installations-cancelled/analysis","conflicts":"/api/acts/ad-cessna-150-20-front-seat-restraint-installations-cancelled/conflicts","importantCases":"/api/acts/ad-cessna-150-20-front-seat-restraint-installations-cancelled/important-cases","documents":"/api/acts/ad-cessna-150-20-front-seat-restraint-installations-cancelled/documents"}}