{"id":"F2006B04661","name":"AD/BELL 412/26 - Bogus Pressure Gauge Emergency Floats P/N 212-073-905-1","slug":"ad-bell-412-26-bogus-pressure-gauge-emergency-floats-p-n-212-073-905-1","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"repealed","isInForce":false,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":44413,"registerId":"commonwealth-F2006B04661-current","compilationNumber":null,"startDate":"2026-04-02","status":"Repealed","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/BELL 412/26 - Bogus Pressure Gauge Emergency Floats P/N 212-073-905-1","content":"---\nmeta-content-style-type: text/css\nmeta-content-type: application/xhtml+xml; charset=utf-8\nmeta-generator: Aspose.Words for .NET 22.10.0\n---\n\n?xml version=\"1.0\" encoding=\"utf-8\" standalone=\"no\"?>\n\nCOMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 105 CIVIL AVIATION SAFETY AUTHORITY\n\nSCHEDULE OF AIRWORTHINESS DIRECTIVES\n\n \n\n![](image.001.png)  Bell Helicopter Textron 412 Series Helicopters\n\n \n\nAD/BELL 412/26 Bogus Pressure Gauge Emergency\n\nFloats P/N 212-073-905-1\n\n\n4/90\n\nDM\n\n \n\nApplicability: All models.\n\n \n\nRequirement: Action in accordance with Bell OSN-GEN-89-14.\n\n \n\nCompliance: At the next inspection for Maintenance Release issue after 28 February 1990 or before the next charging of the emergency float reservoir, whichever is earlier.\n\n \n\nBackground: The aircraft manufacturer has had reported an incident where the subject pressure gauge exploded at only 2000 psig. The gauge was subsequently found to be bogus. Failure of the bogus gauge could severely injure maintenance personnel.\n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n","sortOrder":0}],"analysis":{"kimi_summary":{"_metrics":{"model":"kimi-k2.5","source":"moonshot-batch","completionTokens":1514},"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This is the original issuance of the directive, maintaining its original narrow scope of addressing a specific counterfeit part safety hazard in Bell 412 helicopter emergency float systems."},"complexity_factors":["Single directive referencing an external technical standard (Bell OSN-GEN-89-14) rather than spelling out the specific steps","Simple applicability clause covering 'all models' with no exceptions","Binary conditional compliance deadline using 'whichever is earlier' logic","No interpretation section, definitions, or nested cross-references to other legislation"],"plain_english_summary":"This AD orders owners and operators of Bell 412 helicopters to inspect and replace counterfeit emergency-float pressure gauges (P/N 212‑073‑905‑1) per Bell OSN‑GEN‑89‑14. Fake gauges have burst at about 2,000 PSI, risking severe injury during reservoir charging. Compliance is required by the earlier of the next Maintenance Release inspection after 28 Feb 1990 or before the next time the emergency float reservoir is charged."}},"importantCases":[],"_links":{"self":"/api/acts/ad-bell-412-26-bogus-pressure-gauge-emergency-floats-p-n-212-073-905-1","history":"/api/acts/ad-bell-412-26-bogus-pressure-gauge-emergency-floats-p-n-212-073-905-1/history","analysis":"/api/acts/ad-bell-412-26-bogus-pressure-gauge-emergency-floats-p-n-212-073-905-1/analysis","conflicts":"/api/acts/ad-bell-412-26-bogus-pressure-gauge-emergency-floats-p-n-212-073-905-1/conflicts","importantCases":"/api/acts/ad-bell-412-26-bogus-pressure-gauge-emergency-floats-p-n-212-073-905-1/important-cases","documents":"/api/acts/ad-bell-412-26-bogus-pressure-gauge-emergency-floats-p-n-212-073-905-1/documents"}}