{"id":"F2007L04797","name":"AD/CESSNA 400/27 - Front Seat Restraint Installations - Modification - CANCELLED","slug":"ad-cessna-400-27-front-seat-restraint-installations-modification-cancelled","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"repealed","isInForce":false,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":71337,"registerId":"commonwealth-F2007L04797-current","compilationNumber":null,"startDate":"2026-04-02","status":"Repealed","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"Cessna 400 Series Aeroplanes","sectionType":"division","heading":"Cessna 400 Series Aeroplanes","content":"### Cessna 400 Series Aeroplanes\n\n| AD/CESSNA 400/27 | Front Seat RestraintInstallations - 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 This AD has been replaced by AD/GENERAL/74 Amendment 1.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\n23 November 2007","sortOrder":0},{"sectionNumber":"AD/CESSNA 400/27","sectionType":"part","heading":"AD/CESSNA 400/27","content":"## AD/CESSNA 400/27","sortOrder":1},{"sectionNumber":"Front Seat RestraintInstallations - Modi","sectionType":"part","heading":"Front Seat RestraintInstallations - Modification","content":"## Front Seat Restraint  \nInstallations - 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":3306},"content_quality":"ok","complexity_score":1,"scope_assessment":{"changed":false,"description":"This instrument terminates the original AD entirely rather than expanding its scope. The regulatory requirement for front seat restraints has been consolidated into AD/GENERAL/74, representing a streamlining of scope rather than growth beyond the original safety purpose."},"complexity_factors":["Single operative provision consisting of one word ('CANCELLED')","No defined terms or interpretation section","No procedural steps, conditions, or exceptions","Extremely brief instrument acting only as a pointer to AD/GENERAL/74"],"plain_english_summary":"This document officially cancels an old aviation safety rule (Airworthiness Directive **AD/CESSNA 400/27**) that required Cessna 400 series aircraft to have shoulder harnesses (upper torso restraints) installed on front seats.\n\n**What this means for aircraft owners:**\n* You no longer need to follow this specific directive\n* The requirement has been moved to a newer, general directive (**AD/GENERAL/74 Amendment 1**) that covers multiple aircraft types\n* If your aircraft was built before 1967, check the new general directive for current compliance rules regarding seat restraints\n\n**Background:**\nThe original 1971 rule mandated retrofitting shoulder harnesses on older Cessna 400 series planes. CASA cancelled this specific directive in January 2008 to consolidate the requirement into a broader regulation that applies across different aircraft models."}},"importantCases":[],"_links":{"self":"/api/acts/ad-cessna-400-27-front-seat-restraint-installations-modification-cancelled","history":"/api/acts/ad-cessna-400-27-front-seat-restraint-installations-modification-cancelled/history","analysis":"/api/acts/ad-cessna-400-27-front-seat-restraint-installations-modification-cancelled/analysis","conflicts":"/api/acts/ad-cessna-400-27-front-seat-restraint-installations-modification-cancelled/conflicts","importantCases":"/api/acts/ad-cessna-400-27-front-seat-restraint-installations-modification-cancelled/important-cases","documents":"/api/acts/ad-cessna-400-27-front-seat-restraint-installations-modification-cancelled/documents"}}