{"id":"F2006B10627","name":"AD/HU 269/67 Amdt 2 - Tailboom Centre Attachment Fitting Assembly - Inspection","slug":"ad-hu-269-67-amdt-2-tailboom-centre-attachment-fitting-assembly-inspection","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":116518,"registerId":"commonwealth-F2006B10627-current","compilationNumber":null,"startDate":"2026-04-03","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/HU 269/67 Amdt 2 - Tailboom Centre Attachment Fitting Assembly - Inspection","content":"![](image.002.png)![](image.001.png)AIRWORTHINESS DIRECTIVE\n\n![](image.002.png)For the reasons set out in the background section, the CASA delegate whose signature appears below revokes Airworthiness Directive (AD) AD/HU 269/67 Amdt 1 and issues the following AD under subregulation 39.1 (1) of CAR 1998. The AD requires that the action set out in the requirement section (being action that the delegate considers necessary to correct the unsafe condition) be taken in relation to the aircraft or aeronautical product mentioned in the applicability section: (a) in the circumstances mentioned in the requirement section; and (b) in accordance with the instructions set out in the requirement section; and (c) at the time mentioned in the compliance section.\n\nSchweizer (Hughes) 269 Series Helicopters\n\nAD/HU 269/67\n\nAmdt 2\n\n  \n\nTailboom Centre Attachment Fitting Assembly - Inspection\n\n  \n13/2002\n\nApplicability: All models.\n\nRequirement: 1. Inspect the tailboom centre attachment (saddle) fitting in accordance with Hughes SIN No. B-238 (for models 269A, 269A-1, 269B) and B-239 (for model 269C).\n\n2. Check the thickness of the saddle fitting lugs. The thickness of the lugs that are nearer the tailboom should be equal to, or less than, the thickness of the lugs away from the tail-boom. If the lug thickness does not meet this condition, the saddle fitting must be retired from service within the next 100 hours time in service.\n\nNote: FAA AD’s 91-05-18 and 93-21-03 refer.\n\nCompliance: 1. As detailed in Hughes SIN No. B-238 or B-239 as applicable (depending on model).\n\n2. Coincident with the initial inspection required by SIN No. B-238 or B-239.\n\nThis Amendment becomes effective on 26 December 2002.\n\nBackground: These inspections are required to prevent fatigue failure of the tailboom centre attachment fitting, which could result in loss of the tailboom of the helicopter. This amendment changes the requirement document from Hughes SIN No. N-165.1 (now cancelled) to Hughes SIN B-239 or B-239 (depending on the model). Minor changes are also made to the text and a note added which refers to the original FAA AD’s.\n\nThere is no technical change to the inspections required by this AD.\n\nSchweizer (Hughes) 269 Series Helicopters\n\nAD/HU 269/67 Amdt 2 (continued)\n\nThe original issue of this Airworthiness Directive became effective in August 1982.\n\n![Signature of David Alan Villiers Delegate of the Civil Aviation Safety Authority](image.003.jpeg)  \n\nDavid Alan Villiers\n\nDelegate of the Civil Aviation Safety Authority 14 November 2002\n\n![](image.002.png)The above AD is notified in the Commonwealth of Australia Gazette on 4 December 2002.","sortOrder":0}],"analysis":{"flash_summary":{"complexity_score":2,"scope_assessment":{"changed":false,"description":"The amendment updates the referenced Hughes Service Instruction from the cancelled N‑165.1 to B‑238/B‑239 and adds a note referencing original FAA ADs, but the AD states there is no technical change to the inspection requirements. Mechanically, the obligation to inspect and to retire a fitting that fails the lug‑thickness test remains unchanged."},"complexity_factors":["Reliance on external manufacturer service instructions (Hughes SIN B‑238 / B‑239) for inspection procedures increases dependence on those documents.","A single simple measurement rule determines action (lug thickness comparison), but the measurement location and method are tied to the referenced SINs rather than spelled out in the AD.","Applicability covers all models of the 269 series, which broadens affected operators but does not add procedural variation.","Fixed retirement timeline (within 100 hours if condition met) imposes a short, clear compliance window for operators.","Compliance timing is tied to the initial inspection in the SINs ('coincident with the initial inspection'), creating a dependency between documents for scheduling.","A note cross-references FAA ADs (91-05-18 and 93-21-03), which may require operators to consult multiple regulatory sources.","Overall low regulatory discretion—AD prescribes inspection and retirement criteria—reduces interpretive complexity but transfers implementation work to operators."],"plain_english_summary":"This Airworthiness Directive requires operators of all Schweizer (Hughes) 269 helicopters to inspect the tailboom centre attachment (saddle) fitting following Hughes Service Instructions B‑238 (269A/A‑1/269B) or B‑239 (269C). If the lug nearer the tailboom is thicker than the lug away from the tailboom, the fitting must be retired within 100 hours. CASA (via its delegate) enforces the rule; operators pay for inspections and any replacement. The AD’s stated purpose is to prevent fatigue failure and loss of the tailboom."},"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"},"kimi_summary":{"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This amendment explicitly states there is 'no technical change to the inspections required.' It merely updates the reference document from a cancelled service instruction (N-165.1) to current ones (B-238/B-239). The scope remains identical to the original 1982 directive: preventing fatigue failure of the tailboom attachment fitting."},"complexity_factors":["Very short document (approximately 300 words)","Only 2 defined technical references (Hughes SIN B-238 and B-239)","Simple conditional logic: single if/then condition (lug thickness check)","No cross-references to other legislation beyond noting related FAA directives","Clear, single-purpose applicability (one helicopter series, all models)","Straightforward compliance timeline (coincident with initial inspection, or 100 hours if condition found)"],"plain_english_summary":"This CASA safety order covers Schweizer (Hughes) 269 series helicopters and mandates inspection of the tailboom centre attachment fitting. Operators must check lug thickness; if the lugs nearer the tailboom are thicker than the outer lugs, the fitting must be replaced within 100 flight hours to prevent metal-fatigue failure and possible tailboom separation. Amendment 2 updates referenced technical documents only; no new inspection requirements. Effective 26 December 2002."}},"importantCases":[],"_links":{"self":"/api/acts/ad-hu-269-67-amdt-2-tailboom-centre-attachment-fitting-assembly-inspection","history":"/api/acts/ad-hu-269-67-amdt-2-tailboom-centre-attachment-fitting-assembly-inspection/history","analysis":"/api/acts/ad-hu-269-67-amdt-2-tailboom-centre-attachment-fitting-assembly-inspection/analysis","conflicts":"/api/acts/ad-hu-269-67-amdt-2-tailboom-centre-attachment-fitting-assembly-inspection/conflicts","importantCases":"/api/acts/ad-hu-269-67-amdt-2-tailboom-centre-attachment-fitting-assembly-inspection/important-cases","documents":"/api/acts/ad-hu-269-67-amdt-2-tailboom-centre-attachment-fitting-assembly-inspection/documents"}}