{"id":"F2006B09017","name":"AD/DHC-1/36 - Flap Operating Cables","slug":"ad-dhc-1-36-flap-operating-cables","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"repealed","isInForce":false,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":52687,"registerId":"commonwealth-F2006B09017-current","compilationNumber":null,"startDate":"2026-04-02","status":"Repealed","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/DHC-1/36 - Flap Operating Cables","content":"COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 \\- 105 CIVIL AVIATION SAFETY AUTHORITY\n\nSCHEDULE OF AIRWORTHINESS DIRECTIVES\n\n![](image.001.png)  \nDe Havilland DHC-1 (Chipmunk) Series Aeroplanes\n\nAD/DHC-1/36 Flap Operating Cables 6/95 DM\n\nApplicability: British Aerospace C1 (English production) aircraft.\n\nRequirement: Action in accordance with British Aerospace TNS CT(C1) No.184 Issue 2.\n\nNote: UK CAA AD 001-03-95 refers\n\nCompliance: Unless already accomplished in the preceding twelve months, within 50 hours time in service after 25 April 1995; thereafter at intervals not exceeding twelve months, or 150 hours time in service, whichever occurs first.\n\nBackground: Cases have been reported of failure of the Flap operating cable which in one case led to a flap asymmetry situation during the final phase of landing. Investigation has shown the failures were due to either incorrect rigging of the control cables or inadequate maintenance of the control pulleys.","sortOrder":0}],"analysis":{"kimi_summary":{"_metrics":{"model":"kimi-k2.5","source":"moonshot-batch","completionTokens":2347},"content_quality":"ok","complexity_score":3,"scope_assessment":{"changed":false,"description":"This directive maintains its original narrow scope targeting a specific mechanical failure mode (flap cable failure) in a specific aircraft fleet. No evidence of scope expansion beyond the original airworthiness safety concern."},"complexity_factors":["Narrow applicability limited to specific aircraft production line (British Aerospace C1 English production only)","Conditional initial compliance deadline with 12-month lookback exception","Dual recurring intervals requiring calculation (12 months versus 150 flight hours, whichever occurs first)","Dependency on external technical standard (British Aerospace TNS CT(C1) No.184 Issue 2)","Cross-reference to UK Civil Aviation Authority directive (AD 001-03-95)"],"plain_english_summary":"This mandatory Airworthiness Directive applies to owners and operators of De Havilland DHC-1 Chipmunk aeroplanes built in England. It addresses broken wing-flap control cables that can cause dangerous flap asymmetry and loss of control during landing.\n\nYou must follow British Aerospace Technical News Sheet No.184 Issue 2 for repair and inspection. Initial compliance is within 50 flight hours after 25 April 1995 (unless done in the prior 12 months); repeat inspections are required every 12 months or every 150 flight hours, whichever comes first."}},"importantCases":[],"_links":{"self":"/api/acts/ad-dhc-1-36-flap-operating-cables","history":"/api/acts/ad-dhc-1-36-flap-operating-cables/history","analysis":"/api/acts/ad-dhc-1-36-flap-operating-cables/analysis","conflicts":"/api/acts/ad-dhc-1-36-flap-operating-cables/conflicts","importantCases":"/api/acts/ad-dhc-1-36-flap-operating-cables/important-cases","documents":"/api/acts/ad-dhc-1-36-flap-operating-cables/documents"}}