{"id":"F2006B06631","name":"AD/ROBIN/33 - Control Surface Balance","slug":"ad-robin-33-control-surface-balance","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":48517,"registerId":"commonwealth-F2006B06631-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.002.png)\n\n![](image.002.png)  \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 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.","sortOrder":0},{"sectionNumber":"AD/ROBIN/33 Control Surface Balance 7/20","sectionType":"part","heading":"AD/ROBIN/33 Control Surface Balance 7/2000","content":"# AD/ROBIN/33 Control Surface Balance 7/2000\n\nApplicability: Models R2160 and R2160i S/N 265\\*, 270\\*, 271\\*, 375, 287, 288, 289, 290, 300, 304,\n\n305, 307, 309, 310, 311, 313, 316, 318, 320, 322, 323, 324, 325, 329, 337, 341\\*, 343.\n\nSerial numbers marked with an asterisk need not conduct the aileron balance check.\n\nRequirement: Action in accordance with Robin Aviation SB 168 dated 29 March 2000.\n\nNote: DGAC AD 2000-172(A) refers.\n\nCompliance: Within 100 hours time in service after the effective date of this directive.\n\nThis Airworthiness Directive becomes effective on 13 July 2000.\n\nBackground: This directive is raised following the possibility that some control surfaces may not be within the balance limits required for type certification.\n\n![Signature of William Ronald Smith Delegate of the Civil Aviation Safety Authority](image.003.png)  \n\nWilliam Ronald Smith\n\nDelegate of the Civil Aviation Safety Authority 25 May 2000\n\n![](image.002.png)  \n\nThe above AD is notified in the Commonwealth of Australia Gazette on 14 June 2000","sortOrder":1}],"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"},"kimi_summary":{"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This is a standard single-issue Airworthiness Directive addressing a specific unsafe condition in specific aircraft. It has not expanded beyond its original purpose of ensuring control surface balance in the affected Robin aircraft models."},"complexity_factors":["Very short document (under 300 words)","Only 3 operative sections: Applicability, Requirement, and Compliance","No defined terms section - all terms are ordinary aviation language","Single cross-reference to a French aviation directive (DGAC AD 2000-172(A)) and manufacturer bulletin","Simple conditional logic: serial numbers with asterisks are exempt from one specific check","No nested exceptions or complex temporal calculations"],"plain_english_summary":"This safety order requires owners/operators of specified Robin R2160 and R2160i aircraft to inspect and, if needed, correct the balance of control surfaces per Robin Service Bulletin 168 (29 Mar 2000). It targets aircraft with particular serial numbers and notes some serials only require checks of certain surfaces, not ailerons.\n\nReason: unbalanced surfaces can flutter or vibrate in flight, risking loss of control or structural failure. Compliance is within 100 flight hours after 13 July 2000."},"flash_summary":{"complexity_score":2,"scope_assessment":{"changed":false,"description":"This AD confines action to specified Robin R2160/R2160i serial numbers to address possible out-of-balance control surfaces and mandates compliance with Service Bulletin 168. It does not broaden the types of aircraft affected beyond the listed serial numbers or add regulatory powers beyond requiring inspection/correction within the stated timeframe."},"complexity_factors":["Narrow applicability: specific models (R2160, R2160i) and a list of serial numbers (some marked with * for partial exemption)","Normative reference to an external document: Robin Aviation Service Bulletin 168 (29 Mar 2000) — compliance depends on that SB's content","Single, short compliance window: action required within 100 hours time-in-service from the AD effective date","Potential follow-on work: directive requires inspection and may require corrective adjustments or repairs, creating variable cost and technical burden","Cross-reference to foreign AD (DGAC AD 2000-172(A)) — indicates related regulatory material but does not reproduce its content","Issued by CASA delegate under CAR 1998 subregulation 39.1(1) — administrative discretion limited to issuing the AD"],"plain_english_summary":"Requires owners/operators of specified Robin R2160 and R2160i aircraft (listed serial numbers) to perform control‑surface balance work per Robin Aviation Service Bulletin 168 (29 Mar 2000). Serial numbers marked * are exempt from the aileron balance check.\n\nCASA describes the purpose as ensuring control surfaces meet type‑certification balance limits. The rule obliges operators to inspect and, if necessary, correct balances within 100 flight hours of the AD (effective 13 July 2000), imposing inspection and repair costs on aircraft owners."}},"importantCases":[],"_links":{"self":"/api/acts/ad-robin-33-control-surface-balance","history":"/api/acts/ad-robin-33-control-surface-balance/history","analysis":"/api/acts/ad-robin-33-control-surface-balance/analysis","conflicts":"/api/acts/ad-robin-33-control-surface-balance/conflicts","importantCases":"/api/acts/ad-robin-33-control-surface-balance/important-cases","documents":"/api/acts/ad-robin-33-control-surface-balance/documents"}}