{"id":"F2008L00312","name":"AD/BAL/25 - Cameron Balloons Inlet Self-Seal Valves","slug":"ad-bal-25-cameron-balloons-inlet-self-seal-valves","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":72525,"registerId":"commonwealth-F2008L00312-current","compilationNumber":null,"startDate":"2026-04-02","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"Hot Air Balloons","sectionType":"division","heading":"Hot Air Balloons","content":"### Hot Air Balloons\n\n| AD/BAL/25 | Cameron Balloons Inlet Self-Seal Valves | 4/2008 TX |\n| --------- | --------------------------------------- | --------- |\n\n| Applicability: | All Cameron Balloons fitted with gas cylinders supplied by CBL balloons which have a CB-0824-0001 Rego Type Cylinder Liquid Valve fitted which is date stamped between 12/05 and 08/06.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 |\n| -------------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |\n| Requirement:   | 1. Inspect the balloons’ cylinder to identify whether the Cylinder Liquid Valve is from the affected batch of valves. CBL Service Bulletin No. 17 provides information on how to identify the affected valves.2. Replace the self-seal valve in accordance with CBL Service Bulletins 16 and 17.3. Any cylinder from the affected batch, which is installed in a multi cylinder balloon, if it is to be used on a hopper balloon, must be modified in accordance with CBL Service Bulletins 16 and 17.4. Other cylinders from the affected batch, which are used on multi- cylinder balloons, may remain in service.Note 1: It is recommended the self-seal valve is also replaced on cylinders from the affected batch which are used on multi cylinder balloons. This should be done in accordance with CBL Service Bulletin 16.Note 2: UK CAA Emergency AD G-2008-0002 dated 14 January 2008 refers. |\n| Compliance:    | 1. Before further flight after the effective date of this AD.2. Before using a cylinder that is from the affected batch in a single cylinder balloon.3. Before further flight after the effective date of this AD.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      |\n|                | This Airworthiness Directive becomes effective on 11 February 2008.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                     |\n\n| Background: | Defective inlet self-seal valves have been identified. Detachment of a seal inside the valve could result in partial or complete blockage of the burner supply. On a hopper balloon this failure would result in an uncontrolled descent. In some circumstances this could result in serious injury. |\n| ----------- | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |\n\n![](image.001.png)  \nDavid Punshon  \nDelegate of the Civil Aviation Safety Authority\n\n6 February 2008","sortOrder":0},{"sectionNumber":"AD/BAL/25","sectionType":"part","heading":"AD/BAL/25","content":"## AD/BAL/25","sortOrder":1},{"sectionNumber":"Cameron Balloons Inlet Self-Seal Valves","sectionType":"part","heading":"Cameron Balloons Inlet Self-Seal Valves","content":"## Cameron Balloons Inlet Self-Seal Valves","sortOrder":2},{"sectionNumber":"4/2008 TX","sectionType":"part","heading":"4/2008 TX","content":"## 4/2008 TX","sortOrder":3}],"analysis":{"flash_summary_failed":{"failed":true,"reason":"A positive credit balance is required for all requests, including BYOK, so fallback providers remain available. Add credits at https://vercel.com/d?to=%2F%5Bteam%5D%2F%7E%2Fai%3Fmodal%3Dtop-up to continue.","source":"analysis-cron"},"flash_summary":{"complexity_score":3,"scope_assessment":{"changed":false,"description":"Scope remains limited to the specified batch of CB-0824-0001 Cylinder Liquid Valves and to the uses identified (single‑cylinder/hopper vs multi‑cylinder). Corrective work is to follow CBL Service Bulletins 16 and 17; the AD does not broaden applicability beyond the date‑stamped batch."},"complexity_factors":["Narrow technical applicability: limited to CB-0824-0001 valves date‑stamped 12/05–08/06 (requires identification of parts)","Clear, short compliance windows: actions required before further flight and before using affected cylinders in single‑cylinder balloons","Different treatment by installation type: mandatory replacement/modification for single‑cylinder/hopper use, recommended (not mandatory) for some multi‑cylinder installations","Reliance on external technical documents (CBL Service Bulletins 16 and 17) for the specific corrective procedures","Safety‑critical failure mode (internal seal detachment) increases operational urgency and risk of severe consequences","Practical burden on operators to inspect inventories, schedule maintenance and bear costs of replacement/modification"],"plain_english_summary":"This Directive requires operators of Cameron Balloons fitted with CB-0824-0001 Cylinder Liquid Valves (date‑stamped 12/05–08/06) to inspect and, if affected, replace or modify the inlet self‑seal valve per CBL Service Bulletins 16 and 17 before further flight or before using affected cylinders in single‑cylinder balloons. It responds to a defect where an internal seal may detach and block burner gas flow, risking uncontrolled descent. Operators pay for inspections, replacements and modifications; the AD makes some actions mandatory and others recommended for multi‑cylinder installations."},"kimi_summary":{"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This is a targeted safety directive addressing a specific manufacturing defect in a specific valve batch. The scope remains precisely limited to the identified safety risk without expansion into broader regulatory areas."},"complexity_factors":["Short, single-issue directive (one specific valve defect)","Only 4 defined applicability criteria (manufacturer, valve type, date range, cylinder supplier)","Clear conditional logic: different rules for single-cylinder vs multi-cylinder balloons","Minimal cross-referencing (only to two service bulletins and one UK directive)","Plain language background explaining the safety risk","No nested exceptions or complex legal definitions"],"plain_english_summary":"This AD requires owners/operators of certain Cameron Balloons using CB-0824-0001 Rego Type cylinder valves (made May–Aug 2006) to inspect valves and replace the defective self-seal where installed in single‑cylinder balloons (e.g., hoppers) or before moving an affected cylinder into single‑cylinder use. Multi‑cylinder aircraft may continue operating but replacement is recommended.\n\nCompliance is required before flight/use after 11 February 2008 to prevent fuel‑starvation and uncontrolled descent."}},"importantCases":[],"_links":{"self":"/api/acts/ad-bal-25-cameron-balloons-inlet-self-seal-valves","history":"/api/acts/ad-bal-25-cameron-balloons-inlet-self-seal-valves/history","analysis":"/api/acts/ad-bal-25-cameron-balloons-inlet-self-seal-valves/analysis","conflicts":"/api/acts/ad-bal-25-cameron-balloons-inlet-self-seal-valves/conflicts","importantCases":"/api/acts/ad-bal-25-cameron-balloons-inlet-self-seal-valves/important-cases","documents":"/api/acts/ad-bal-25-cameron-balloons-inlet-self-seal-valves/documents"}}