{"id":"F2006B07305","name":"AD/TB10/36 - Nose Gear Fork","slug":"ad-tb10-36-nose-gear-fork","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":49295,"registerId":"commonwealth-F2006B07305-current","compilationNumber":null,"startDate":"2026-04-02","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"AIRWORTHINESS DIRECTIVE","sectionType":"part","heading":"AIRWORTHINESS DIRECTIVE","content":"# AIRWORTHINESS DIRECTIVE\n\n![](image.001.png)  \n\nFor the reasons set out in the background section, the CASA delegate whose signature appears below issues the following Airworthiness Directive (AD) under subregulation 39.1 (1) of CASR 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\n![](image.001.png)  \n\nAerospatiale (Socata) TB9 and TB10 (Tobago) Series Aeroplanes","sortOrder":0},{"sectionNumber":"AD/TB10/36 Nose Gear Fork 10/2003","sectionType":"part","heading":"AD/TB10/36 Nose Gear Fork 10/2003","content":"# AD/TB10/36 Nose Gear Fork 10/2003\n\nApplicability: Model TB 9 and TB 10 aircraft, serial numbers 2054, 2074 through 2155, and 2184\\. Requirement: Action in accordance with Socata Service Bulletin TB No. 10-138, dated May 2003.\n\nNote: DGAC AD 2003-285(A) refers.\n\nCompliance: At the next major inspection after 2 October 2003 or before 31 December 2003, whichever occurs first.\n\nThis Airworthiness Directive becomes effective on 2 October 2003.\n\nBackground: This Directive requires inspection of the nose gear fork grain structure, due to the possibility of inverted material grain flow which may have occurred as a result of an incorrect manufacturing process.\n\n![Signature of David Villiers Delegate of the Civil Aviation Safety Authority](image.002.png)  \n\nDavid Villiers\n\nDelegate of the Civil Aviation Safety Authority 20 August 2003\n\n![](image.001.png)  \n\nThe above AD is notified in the Commonwealth of Australia Gazette on 10 September 2003.","sortOrder":1}],"analysis":{"kimi_summary":{"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This is a standard single-issue Airworthiness Directive addressing a specific manufacturing defect in a limited fleet of aircraft. The scope remains tightly focused on the original safety concern without expansion into broader regulatory matters."},"complexity_factors":["Very short document (under 300 words)","Only 3 defined applicability criteria (specific serial numbers)","Single requirement referencing an external technical document (Service Bulletin)","Simple compliance deadline structure (whichever occurs first of two dates)","No nested exceptions or conditional logic","No cross-references to other legislation beyond a single note about a French aviation directive"],"plain_english_summary":"This safety order from CASA requires owners/operators of certain Socata TB9 and TB10 “Tobago” aeroplanes (S/N 2054, 2074–2155, 2184) to inspect the nose‑landing‑gear fork per Service Bulletin TB No. 10‑138 (May 2003). A manufacturing error may have produced incorrect metal grain flow in the fork, weakening it and risking nose‑gear collapse during landing or taxiing—potentially causing injury, death, or serious damage. Inspections are required by the next major inspection after 2 Oct 2003 or by 31 Dec 2003, whichever is earlier."},"flash_summary":{"complexity_score":3,"scope_assessment":{"changed":false,"description":"The Directive implements the original safety objective: inspect for possible inverted grain flow on specified serial numbers. It does not expand applicability or introduce new obligations beyond requiring the Service Bulletin inspection within the stated compliance window."},"complexity_factors":["Narrow applicability limited to TB9/TB10 and specific serial numbers (straightforward population identification)","Mandates actions by reference to an external technical document (Socata Service Bulletin TB No. 10‑138) which contains the operational detail","Fixed compliance window tied to the next major inspection or a calendar cutoff (requires scheduling coordination)","Technical inspection of grain structure may require specialist skills/equipment and interpretation","Issued under CASR subregulation 39.1(1) (administrative/legal enforcement mechanism is standard)"],"plain_english_summary":"This Airworthiness Directive orders inspection of the nose‑gear fork grain structure on specified Aerospatiale (Socata) TB9 and TB10 aeroplanes because an incorrect manufacturing process may have produced inverted material grain flow. The CASA delegate requires operators to carry out the inspection in accordance with Socata Service Bulletin TB No. 10‑138 by the next major inspection after 2 October 2003 or before 31 December 2003, whichever comes first. Aircraft owners/operators pay for and arrange the inspection; CASA (the delegate) enforces compliance under CASR."},"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"}},"importantCases":[],"_links":{"self":"/api/acts/ad-tb10-36-nose-gear-fork","history":"/api/acts/ad-tb10-36-nose-gear-fork/history","analysis":"/api/acts/ad-tb10-36-nose-gear-fork/analysis","conflicts":"/api/acts/ad-tb10-36-nose-gear-fork/conflicts","importantCases":"/api/acts/ad-tb10-36-nose-gear-fork/important-cases","documents":"/api/acts/ad-tb10-36-nose-gear-fork/documents"}}