{"id":"F2006B04391","name":"AD/BELL 205/55 - Pitch Change Link Universal","slug":"ad-bell-205-55-pitch-change-link-universal","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"repealed","isInForce":false,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":44216,"registerId":"commonwealth-F2006B04391-current","compilationNumber":null,"startDate":"2026-04-02","status":"Repealed","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/BELL 205/55 - Pitch Change Link Universal","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\nBell Helicopter Textron 205 Series Helicopters\n\n \n\nAD/BELL 205/55 Pitch Change Link Universal 11/89\n\nDM\n\n \n\nApplicability: All models fitted with universals P/N 204-011-128-1 after 1 April 1989.\n\n \n\nRequirement: Carry out a one time inspection of the P/N 204-011-128-1 universal for staking marks around each bearing face. If the universal has 6 staking marks around each bearing remove from service and destroy universal.\n\n \n\nNote: Bell OSN 205-89-17 refers.\n\n \n\nCompliance: By 30 September 1989. Thereafter prior to installation.\n\n \n\nBackground: The U.S. Army has detected cracks, due to hydrogen embrittlement, around the staking marks used to retain bearings within the universal. This Directive is raised to ensure defective new universals are not fitted to civil aircraft.\n","sortOrder":0}],"analysis":{"kimi_summary":{"_metrics":{"model":"kimi-k2.5","source":"moonshot-batch","completionTokens":1635},"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This directive remains narrowly targeted at its original purpose: addressing a specific manufacturing defect (hydrogen embrittlement around staking marks) in a single helicopter component identified in 1989. There is no evidence of scope expansion beyond the initial safety issue concerning pitch change link universals."},"complexity_factors":["Single, clearly identified part number (P/N 204-011-128-1) with no variants","Binary inspection criteria (presence of exactly 6 staking marks = remove, fewer = pass)","No nested exceptions, conditional clauses, or interpretation sections","Single compliance deadline with straightforward thereafter requirement","Limited to one specific helicopter series (Bell 205) and one component"],"plain_english_summary":"This AD requires a one-time inspection of the pitch change link “universal” (PN 204-011-128-1) on Bell 205 helicopters to check for staking marks around each bearing face. If exactly six staking marks are found the part must be removed and destroyed. It affects owners/operators of Bell 205s fitted with that part after 1 Apr 1989 and addresses hydrogen‑embrittlement cracking that could cause rotor control loss. Inspections were due by 30 Sep 1989; new parts must be inspected before installation."}},"importantCases":[],"_links":{"self":"/api/acts/ad-bell-205-55-pitch-change-link-universal","history":"/api/acts/ad-bell-205-55-pitch-change-link-universal/history","analysis":"/api/acts/ad-bell-205-55-pitch-change-link-universal/analysis","conflicts":"/api/acts/ad-bell-205-55-pitch-change-link-universal/conflicts","importantCases":"/api/acts/ad-bell-205-55-pitch-change-link-universal/important-cases","documents":"/api/acts/ad-bell-205-55-pitch-change-link-universal/documents"}}