{"id":"F2006B08896","name":"AD/DH 82/10 Amdt 1 - Cockpit Lateral Tie Rods and Aircraft Structure","slug":"ad-dh-82-10-amdt-1-cockpit-lateral-tie-rods-and-aircraft-structure","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":52401,"registerId":"commonwealth-F2006B08896-current","compilationNumber":null,"startDate":"2026-04-02","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/DH 82/10 Amdt 1 - Cockpit Lateral Tie Rods and Aircraft Structure","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)  \nDH 82 (Tiger Moth) Series Aeroplanes\n\nAD/DH 82/10\n\nAmdt 1\n\n  \nCockpit Lateral Tie Rods and Aircraft Structure 6/99\n\nApplicability: All Variants of DH82 and DH82A aircraft.\n\nRequirement: 1. Action in accordance with the Paragraph 2.A and 2.C of the Accomplishment Instructions of British Aerospace Technical News Sheet (TNS) CT (Moth) No. 29 Issue 3.\n\n2. Inspect in accordance with Paragraph 2.B of the Accomplishment Instructions of British Aerospace TNS CT (Moth) No. 29 Issue 3.\n\nNote 1: UK CAA AD 006-10-97 refers.\n\nNote 2: A copy of TNS 29 Issue 3 can be obtained from: The Engineering Support Manager\n\nBritish Aerospace Military Aircraft and Aerostructures\n\nMilitary Business Unit, Chadderton Works, Greengate, Middleton Manchester M24 1SA\n\nEngland\n\nFax No. 44 161 955 8798\n\nCompliance: 1\\. Within 2,000 flying hours or 18 years from the last tie rod renewal, whichever occurs first. In cases where no evidence of last renewal date is found to exist, accomplish within 100 flying hours after 21 May 1998 or before 21 November 1998, whichever occurs first. Thereafter at intervals not to exceed 2,000 flying hours or 18 years, whichever occurs first.\n\n2. Within 12 calendar months after 21 May 1998, and thereafter at intervals not to exceed 12 calendar months; and, before further flight after a heavy landing or undercarriage trauma occurrence (as defined in TNS CT (Moth) No. 29 Issue 3).\n\nThis Amendment becomes effective on 17 June 1999.\n\nBackground: During routine maintenance on a DH 82 aircraft, it was found that the lateral fuselage tie rod at the aft position had sheared at its location with the spar attachment fitting. Subsequent investigation found the failure was a result of fatigue cracking in the thread root. This Directive requires that both lateral fuselage tie rods become “lifed items”, and introduces a procedure for the examination of the aircraft structure at annual intervals and following a heavy landing.\n\nAmendment 1 is issued in response to Issue 3 of the Requirement Document which introduces an inspection following an undercarriage trauma event.\n\nThe original issue of this Airworthiness Directive became effective on 21 May 1998.","sortOrder":0}],"analysis":{"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"},"flash_summary":{"complexity_score":3,"scope_assessment":{"changed":true,"description":"Amendment 1 expands the original directive by introducing a mandatory inspection following an undercarriage trauma (heavy landing) event, in addition to the original requirements that made the lateral tie rods ‘lifed’ items and set renewal/inspection intervals."},"complexity_factors":["Relies on an external technical document (British Aerospace TNS CT (Moth) No. 29 Issue 3) for detailed procedures and definitions (e.g. ‘heavy landing’).","Multiple compliance timers: 2,000 flight-hours or 18 years for tie-rod renewal; 12-monthly structural inspections; immediate inspection after heavy landing—requires tracking different clocks.","Requirement to locate evidence of last renewal date, with a short compressed compliance window if records are absent (administrative burden).","Applicability to all DH82/DH82A variants but limited to specific parts and structure—narrow substantive scope but operational impacts on owners/operators.","Sourcing the TNS from a UK address may impose logistical steps for compliance documentation and interpretation."],"plain_english_summary":"This Airworthiness Directive requires owners/operators of all DH82/DH82A (Tiger Moth) aircraft to treat the cockpit lateral tie rods as timed (“lifed”) parts and to carry out inspections and any required actions in accordance with British Aerospace Technical News Sheet CT (Moth) No. 29 Issue 3. It sets maximum intervals for tie-rod renewal and annual structural inspections and adds mandatory checks after a heavy landing or undercarriage trauma.\n\nOwners pay for inspections, recordkeeping and replacements; compliance can require proving the last renewal date or meeting short interim deadlines. The stated purpose is to prevent fatigue failures in the tie rod/spar attachment area."},"kimi_summary":{"content_quality":"ok","complexity_score":3,"scope_assessment":{"changed":false,"description":"This is Amendment 1 to an existing Airworthiness Directive. The amendment adds one specific requirement (inspection after undercarriage trauma) in response to an updated technical document from the manufacturer. The scope remains tightly focused on the original safety issue: preventing fatigue failure of cockpit lateral tie rods in Tiger Moth aircraft. No scope creep detected."},"complexity_factors":["Single technical subject matter (one aircraft type, one structural issue)","Only 2 main compliance requirements with clear timeframes","References external technical document (British Aerospace TNS CT (Moth) No. 29 Issue 3) rather than reproducing instructions inline","Simple conditional logic: 'whichever occurs first' comparisons for deadlines","No defined terms section — uses plain technical language","Short document (approximately 300 words)"],"plain_english_summary":"This safety order requires owners/operators of DH 82 and DH 82A Tiger Moth aircraft in Australia to inspect and replace the cockpit lateral tie rods (and inspect related structure) to prevent cockpit collapse from metal fatigue. Tie rods must be replaced before 2,000 flight hours or 18 years, with annual structure inspections and checks after hard landings.\n\nIt affects museums, clubs, private owners and warbird operators and aims to prevent catastrophic failure in these 80+ year‑old biplanes."}},"importantCases":[],"_links":{"self":"/api/acts/ad-dh-82-10-amdt-1-cockpit-lateral-tie-rods-and-aircraft-structure","history":"/api/acts/ad-dh-82-10-amdt-1-cockpit-lateral-tie-rods-and-aircraft-structure/history","analysis":"/api/acts/ad-dh-82-10-amdt-1-cockpit-lateral-tie-rods-and-aircraft-structure/analysis","conflicts":"/api/acts/ad-dh-82-10-amdt-1-cockpit-lateral-tie-rods-and-aircraft-structure/conflicts","importantCases":"/api/acts/ad-dh-82-10-amdt-1-cockpit-lateral-tie-rods-and-aircraft-structure/important-cases","documents":"/api/acts/ad-dh-82-10-amdt-1-cockpit-lateral-tie-rods-and-aircraft-structure/documents"}}