{"id":"F2006B04921","name":"AD/CESSNA 150/22 Amdt 2 - Alternator Field Circuit Breaker","slug":"ad-cessna-150-22-amdt-2-alternator-field-circuit-breaker","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"repealed","isInForce":false,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":44765,"registerId":"commonwealth-F2006B04921-current","compilationNumber":null,"startDate":"2026-04-02","status":"Repealed","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/CESSNA 150/22 Amdt 2 - Alternator Field Circuit Breaker","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)  Cessna 150, F150, 152 & F152 Series Aeroplanes\n\n \n\nAD/CESSNA 150/22\n\nAmdt 2\n\n\nAlternator Field Circuit Breaker 12/78\n\n \n\nApplicability: All models Cessna 150J, 150K, A150K, 150L, A150L, 150M A150M, 152 and A152.\n\nReims/Cessna F150J, F150K, FA150K, F150L, FA150L, FRA150L, F152 and FA152.\n\n \n\nRequirement: Replace the alternator field automatic reset type circuit breaker with a manual reset type circuit breaker or fuse of a similar rating to that removed.\n\n \n\nCompliance: Before issue of C of A on all affected aircraft\n\n \n\n1. After 31 December 1978.\n\n\n \n\n2.    All other aircraft within 100 hours time in service after 31 December 1978.\n\n \n\nAircraft complying with a previous issue of this Directive satisfy compliance with this issue.\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":2156},"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This is Amendment 2 of an existing directive. The amendment maintains the original scope—addressing the same specific Cessna aircraft models and the same alternator field circuit breaker replacement requirement. The 'grandfathering' clause (allowing compliance with previous issues to satisfy this one) indicates this is a minor administrative update rather than an expansion of scope."},"complexity_factors":["Single, discrete technical requirement","Document length is less than one page","Simple two-tier compliance structure based on aircraft registration date","No legislative cross-references or defined terms section","Clear applicability list using standard aircraft model numbers"],"plain_english_summary":"This mandatory CASA Airworthiness Directive requires owners/operators of specified Cessna 150/152 series aircraft to replace the alternator field automatic-reset circuit breaker with a manual-reset breaker or same-rated fuse. \n\nIt prevents automatic re‑energising during faults (which can cause overheating or fire) so pilots must deliberately restore power. Compliance was required for new certificates issued after 31 Dec 1978 and within 100 flight hours for existing aircraft."}},"importantCases":[],"_links":{"self":"/api/acts/ad-cessna-150-22-amdt-2-alternator-field-circuit-breaker","history":"/api/acts/ad-cessna-150-22-amdt-2-alternator-field-circuit-breaker/history","analysis":"/api/acts/ad-cessna-150-22-amdt-2-alternator-field-circuit-breaker/analysis","conflicts":"/api/acts/ad-cessna-150-22-amdt-2-alternator-field-circuit-breaker/conflicts","importantCases":"/api/acts/ad-cessna-150-22-amdt-2-alternator-field-circuit-breaker/important-cases","documents":"/api/acts/ad-cessna-150-22-amdt-2-alternator-field-circuit-breaker/documents"}}