{"id":"F2008L04306","name":"AD/CESSNA 150/49 - BRS-150 Parachute System","slug":"ad-cessna-150-49-brs-150-parachute-system","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":76297,"registerId":"commonwealth-F2008L04306-current","compilationNumber":null,"startDate":"2026-04-02","status":"InForce","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 150/49 | BRS-150 Parachute System | 13/2008 DM |\n| ---------------- | ------------------------ | ---------- |\n\n| Applicability: | Models 150, 150A, 150B, 150C, 150D, 150E, 150F, 150G, 150H, 150J, 150K, A150K, 150L, A150L, 150M, A150M, 152, and A152 aircraft; equipped with aBRS-150 Parachute System with a serial number in the range of 50001 through 50006 installed via Supplemental Type Certificate (STC) SA64CH.                            |\n| -------------- | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |\n| Requirement:   | Remove the pick-up collar support, nylon screws, and launch tube of the BRS-150 Parachute System and replace them with new parts, in accordance with BRS Service Bulletin SB 2008-04-01 R1, issued 24 April 2008, or later FAA approved revision.Note: FAA AD 2008-22-18 Amdt 39-15715 refers.                         |\n| Compliance:    | Within 25 hours time in service after the effective date of this Directive, unless already accomplished.                                                                                                                                                                                                               |\n|                | This Airworthiness Directive becomes effective on 9 December 2008.                                                                                                                                                                                                                                                     |\n| Background:    | The FAA received notification by the manufacturer of the BRS-150 Parachute System 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\n6 November 2008","sortOrder":0},{"sectionNumber":"AD/CESSNA 150/49","sectionType":"part","heading":"AD/CESSNA 150/49","content":"## AD/CESSNA 150/49","sortOrder":1},{"sectionNumber":"BRS-150 Parachute System","sectionType":"part","heading":"BRS-150 Parachute System","content":"## BRS-150 Parachute System","sortOrder":2},{"sectionNumber":"13/2008 DM","sectionType":"part","heading":"13/2008 DM","content":"## 13/2008 DM","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 — addressing a specific manufacturing defect in a specific batch of parachute systems installed on specific aircraft. There is no evidence of scope creep; it targets exactly the safety issue identified in the background."},"complexity_factors":["Single, specific applicability criterion (specific aircraft models + specific parachute serial number range + specific STC)","Single mandatory action with clear reference to external technical document (BRS Service Bulletin SB 2008-04-01 R1)","Simple compliance deadline (25 hours time in service)","No defined terms section, no nested exceptions, no conditional logic beyond the 'unless already accomplished' exemption","Total length: approximately 200 words of substantive content","Cross-reference to FAA AD 2008-22-18 is informational only, not a compliance requirement"],"plain_english_summary":"This CASA Airworthiness Directive mandates owners/operators of certain Cessna 150/152 aircraft fitted with BRS‑150 systems (serial nos. 50001–50006, STC SA64CH) to replace the pick‑up collar support, nylon screws and launch tube with improved parts. The replacement—required within 25 flight hours after 9 Dec 2008—addresses a defect that can cause premature collar slip and catastrophic parachute deployment failure, making this a critical, life‑saving safety action."},"flash_summary":{"complexity_score":3,"scope_assessment":{"changed":false,"description":"The Directive does not broaden or repurpose the original safety scope; it implements a targeted corrective action limited to specific parachute serial numbers and STC installations to address a reported premature-separation risk. It confines obligations to affected owners/operators and prescribes a single corrective procedure and deadline."},"complexity_factors":["Narrow applicability: limited to listed Cessna 150/152 models with BRS-150 serial numbers 50001–50006 installed via STC SA64CH (reduces stakeholder set).","Single, discrete technical action: removal and replacement of three parts per a specific service bulletin (technical clarity lowers legal ambiguity).","Short compliance window: 25 hours time in service creates operational scheduling pressure and possible aircraft downtime for owners/operators.","Dependence on external documentation: mandates compliance with BRS Service Bulletin SB 2008-04-01 R1 (requires access to and reliance on manufacturer/FAA-approved revision).","Supply/maintenance logistics: availability of replacement parts and approved maintenance facilities could create practical delays or costs for affected operators.","Cross-reference to FAA AD: coordination with FAA material may require verifying later FAA-approved revisions (administrative step adding minor complexity)."],"plain_english_summary":"This Directive requires owners/operators of specific Cessna 150/152 series aeroplanes fitted with BRS-150 parachute systems (serial numbers 50001–50006 installed under STC SA64CH) to remove and replace the pick-up collar support, nylon screws and launch tube in accordance with BRS Service Bulletin SB 2008-04-01 R1. The replacement must be completed within 25 hours time in service of the AD’s effective date (9 December 2008). The action responds to a manufacturer report that the collar may separate prematurely and prevent parachute deployment."}},"importantCases":[],"_links":{"self":"/api/acts/ad-cessna-150-49-brs-150-parachute-system","history":"/api/acts/ad-cessna-150-49-brs-150-parachute-system/history","analysis":"/api/acts/ad-cessna-150-49-brs-150-parachute-system/analysis","conflicts":"/api/acts/ad-cessna-150-49-brs-150-parachute-system/conflicts","importantCases":"/api/acts/ad-cessna-150-49-brs-150-parachute-system/important-cases","documents":"/api/acts/ad-cessna-150-49-brs-150-parachute-system/documents"}}