{"id":"F2006L03800","name":"AD/PMC/40 - Blade Counterweight Bolt Replacement - CANCELLED","slug":"ad-pmc-40-blade-counterweight-bolt-replacement-cancelled","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"repealed","isInForce":false,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":137645,"registerId":"commonwealth-F2006L03800-current","compilationNumber":null,"startDate":"2026-04-03","status":"Repealed","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"Propellers - Variable Pitch - McCauley","sectionType":"division","heading":"Propellers - Variable Pitch - McCauley","content":"### Propellers - Variable Pitch - McCauley\n\n| AD/PMC/40 | Blade Counterweight Bolt Replacement | 13/2006 |\n| --------- | ------------------------------------ | ------- |\n\n| Requirement: | CANCELLED.                                                                                                                                                                                                                               |\n| ------------ | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |\n|              | This AD is cancelled on 21 December 2006.                                                                                                                                                                                                |\n| Background:  | This AD required the replacement of black oxide counterweight bolts with new cadmium plated bolts. Black oxide bolts were found to corrode which could lead to cracking. The actions detailed in this AD have been adequately addressed. |\n\n![](image.001.png)\n\nJames Coyne  \nDelegate of the Civil Aviation Safety Authority\n\n25 October 2006","sortOrder":0},{"sectionNumber":"AD/PMC/40","sectionType":"part","heading":"AD/PMC/40","content":"## AD/PMC/40","sortOrder":1},{"sectionNumber":"Blade Counterweight Bolt Replacement","sectionType":"part","heading":"Blade Counterweight Bolt Replacement","content":"## Blade Counterweight Bolt Replacement","sortOrder":2},{"sectionNumber":"13/2006","sectionType":"part","heading":"13/2006","content":"## 13/2006","sortOrder":3}],"analysis":{"kimi_summary":{"_metrics":{"model":"kimi-k2.5","source":"moonshot-batch","completionTokens":2060},"content_quality":"ok","complexity_score":1,"scope_assessment":{"changed":false,"description":"This instrument performs a single, narrow function: the cancellation of Airworthiness Directive AD/PMC/40. It does not expand regulatory coverage to new aircraft types, components, or operational areas; rather, it extinguishes the previous obligation regarding blade counterweight bolt replacement."},"complexity_factors":["Single operative provision cancelling a previous directive","No compliance requirements or conditions remaining","No definitions, cross-references, or technical appendices","Extremely brief background statement"],"plain_english_summary":"**What this is:** This document officially cancels a previous aviation safety rule (Airworthiness Directive AD/PMC/40) that applied to McCauley variable-pitch propellers.\n\n**What the old rule required:** Aircraft owners previously had to replace black oxide counterweight bolts with new cadmium-plated bolts on certain propellers. The black oxide bolts were prone to corrosion and cracking, which could cause the propeller to fail.\n\n**What this cancellation means:** As of 21 December 2006, that replacement requirement no longer applies. The Civil Aviation Safety Authority (CASA) has determined that the safety issue has been adequately addressed—likely because the affected bolts have been replaced fleet-wide or the manufacturer has resolved the issue.\n\n**Who it affects:** Owners and operators of aircraft fitted with McCauley variable-pitch propellers who were previously subject to Directive AD/PMC/40.\n\n**Bottom line:** If you were waiting to comply with this bolt replacement rule, you don't need to anymore. The directive is dead."}},"importantCases":[],"_links":{"self":"/api/acts/ad-pmc-40-blade-counterweight-bolt-replacement-cancelled","history":"/api/acts/ad-pmc-40-blade-counterweight-bolt-replacement-cancelled/history","analysis":"/api/acts/ad-pmc-40-blade-counterweight-bolt-replacement-cancelled/analysis","conflicts":"/api/acts/ad-pmc-40-blade-counterweight-bolt-replacement-cancelled/conflicts","importantCases":"/api/acts/ad-pmc-40-blade-counterweight-bolt-replacement-cancelled/important-cases","documents":"/api/acts/ad-pmc-40-blade-counterweight-bolt-replacement-cancelled/documents"}}