{"id":"F2008L00545","name":"AD/CESSNA 170/80 - BRS-172 Parachute System","slug":"ad-cessna-170-80-brs-172-parachute-system","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":119456,"registerId":"commonwealth-F2008L00545-current","compilationNumber":null,"startDate":"2026-04-03","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"Cessna 170, 172, F172, FR172 and 175 Ser","sectionType":"division","heading":"Cessna 170, 172, F172, FR172 and 175 Series Aeroplanes","content":"### Cessna 170, 172, F172, FR172 and 175 Series Aeroplanes\n\n| AD/CESSNA 170/80 | BRS-172 Parachute System | 3/2008 |\n| ---------------- | ------------------------ | ------ |\n\n| Applicability: | Model 172, 172A, 172B, 172C, 172D, 172E, 172F, 172G, 172H, 172I, 172K, 172L, 172M, 172N, 172P, 172Q, 172R, 172S, R172J, and R172K aircraft; equipped with a BRS-172 Parachute System installed via Supplemental Type Certificate No. SA01679CH.                             |\n| -------------- | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |\n| Requirement:   | Remove and replace the pick-up collar support and two retaining screws in accordance with Ballistic Recovery Systems Inc. (BRS) Service Bulletin 07-01, dated 8 June 2007.Note: FAA AD 2008-02-18 Amdt 39-15348 refers.                                                     |\n| Compliance:    | Within 25 hours time in service after 13 March 2008.                                                                                                                                                                                                                        |\n|                | This Airworthiness Directive becomes effective on 13 March 2008.                                                                                                                                                                                                            |\n| Background:    | The FAA received notification from BRS that the pick-up collar assembly may prematurely move off the launch tube and adversely affect rocket trajectory during deployment. Premature separation of the collar could result in the parachute failing to successfully deploy. |\n\n![](image.001.png)  \nDavid Villiers  \nDelegate of the Civil Aviation Safety Authority\n\n1 February 2008","sortOrder":0},{"sectionNumber":"AD/CESSNA 170/80","sectionType":"part","heading":"AD/CESSNA 170/80","content":"## AD/CESSNA 170/80","sortOrder":1},{"sectionNumber":"BRS-172 Parachute System","sectionType":"part","heading":"BRS-172 Parachute System","content":"## BRS-172 Parachute System","sortOrder":2},{"sectionNumber":"3/2008","sectionType":"part","heading":"3/2008","content":"## 3/2008","sortOrder":3}],"analysis":{"flash_summary_failed":{"failed":true,"reason":"Unauthenticated. Configure AI_GATEWAY_API_KEY or use a provider module. Learn more: https://ai-sdk.dev/unauthenticated-ai-gateway","source":"analysis-cron"},"kimi_summary":{"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This AD maintains its original narrow scope. It addresses a specific safety defect in a specific aftermarket parachute system installed on specific Cessna aircraft models. There is no evidence of scope creep; the directive remains tightly focused on the identified mechanical failure mode."},"complexity_factors":["Single, specific mechanical action required (replace pick-up collar support and two screws)","Only one defined term of note: 'time in service' (flight hours)","No nested exceptions or conditional logic — applies to all listed aircraft with the specific parachute system installed","Clear, single compliance deadline (25 hours after effective date)","Short document with minimal cross-referencing (only references one FAA AD and one manufacturer service bulletin)","Narrow applicability — specific aircraft models with specific STC (Supplemental Type Certificate) installation"],"plain_english_summary":"This CASA Airworthiness Directive mandates a safety fix for Cessna 170/172/F172/FR172/175 aircraft fitted with a BRS-172 whole-aircraft parachute. It requires replacing the parachute pick-up collar support and two retaining screws per BRS Service Bulletin 07‑01 within 25 flight hours of 13 March 2008. The directive addresses a deployment-failure risk that could prevent the parachute from saving the aircraft and occupants."},"flash_summary":{"complexity_score":3,"scope_assessment":{"changed":false,"description":"The AD confines its effect to aircraft of the listed models that have a BRS-172 parachute installed under STC SA01679CH and mandates a specific part replacement; it does not expand the fleet or impose additional obligations beyond that corrective action, so the scope remains aligned with the immediate safety remediation described in the text."},"complexity_factors":["Narrow applicability: applies only to specified 170/172/175-series models fitted with BRS-172 under STC No. SA01679CH (Applicability).","Single, specific corrective action: removal and replacement of the pick-up collar support and two screws per BRS Service Bulletin 07-01 (Requirement).","Short mandatory compliance window: work must be done within 25 hours time-in-service after 13 March 2008 (Compliance).","Reliance on external technical document: directs compliance to a manufacturer service bulletin rather than setting detailed technical steps in the AD (Requirement references BRS Service Bulletin 07-01).","Safety risk basis is operational/functional (parachute may fail to deploy) rather than structural, affecting urgency and inspection/repair priorities (Background).","Cross-reference to FAA AD creates multi-jurisdictional provenance for the safety concern (Note: FAA AD 2008-02-18)."],"plain_english_summary":"This Airworthiness Directive requires owners/operators of the listed Cessna 170/172/175-series aeroplanes fitted with a BRS-172 ballistic parachute (installed under STC No. SA01679CH) to remove and replace the pick-up collar support and two retaining screws in accordance with BRS Service Bulletin 07-01, within 25 hours time-in-service of 13 March 2008. The action responds to a reported risk that the pick-up collar can slip off the launch tube and prevent parachute deployment."}},"importantCases":[],"_links":{"self":"/api/acts/ad-cessna-170-80-brs-172-parachute-system","history":"/api/acts/ad-cessna-170-80-brs-172-parachute-system/history","analysis":"/api/acts/ad-cessna-170-80-brs-172-parachute-system/analysis","conflicts":"/api/acts/ad-cessna-170-80-brs-172-parachute-system/conflicts","importantCases":"/api/acts/ad-cessna-170-80-brs-172-parachute-system/important-cases","documents":"/api/acts/ad-cessna-170-80-brs-172-parachute-system/documents"}}