{"id":"F2011L01528","name":"AD/EMB-110/8 Amdt 6 - Flap Actuators","slug":"ad-emb-110-8-amdt-6-flap-actuators","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":125834,"registerId":"commonwealth-F2011L01528-current","compilationNumber":null,"startDate":"2026-04-03","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"Embraer EMB-110 (Bandeirante) Series Aer","sectionType":"division","heading":"Embraer EMB-110 (Bandeirante) Series Aeroplanes","content":"### Embraer EMB-110 (Bandeirante) Series Aeroplanes\n\n| AD/EMB-110/8 Amdt 6 | Flap Actuators | 15/2011 |\n| ------------------- | -------------- | ------- |\n\n| Applicability: | Model EMB-110, equipped with flap linear actuators EEMCO P/N D-2246-3,D-2246-4, D-2246-5, D-2246-6, D-2246-31 and D-2246-41.                                                                                                                                           |\n| -------------- | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |\n| Requirement:   | Inspect and lubricate in accordance with Part I and Part II of Brazil SAR AD82-07-04 R3 Amdt 39-691.                                                                                                                                                                   |\n| Compliance:    | For Part I of Requirement Document:                                                                                                                                                                                                                                    |\n|                | At intervals not to exceed 1500 landings or 12 months after 3 February 1992; whichever occurs first.                                                                                                                                                                   |\n|                | For Part II of Requirement Document:                                                                                                                                                                                                                                   |\n|                | At intervals not to exceed 4500 landings or 36 months after 3 February 1992; whichever occurs first.                                                                                                                                                                   |\n|                | No flap linear actuators EEMCO P/N D-2246-3 and D-2246-4 shall be installed on any aircraft after 3 February 1992.                                                                                                                                                     |\n|                | The compliance times of the previous issue of this Directive are as stated.                                                                                                                                                                                            |\n|                | This Amendment becomes effective on 25 July 2011.                                                                                                                                                                                                                      |\n| Background:    | An incident occurred where a flap retracted under aerodynamic loads due to the failure of the flap linear actuator ball return tube, which was caused by the ingress of moisture. This resulted in a flap asymmetry situation which affected the safety of the flight. |\n|                | Amendment 6 is issued to reflect the latest revision of the requirement document.                                                                                                                                                                                      |\n|                | Amendment 5 was raised to reflect the requirements of the State of Design AD.                                                                                                                                                                                          |\n\n![](image.001.png)\n\nDavid Villiers  \nDelegate of the Civil Aviation Safety Authority\n\n21 July 2011","sortOrder":0},{"sectionNumber":"AD/EMB-110/8 Amdt 6","sectionType":"part","heading":"AD/EMB-110/8 Amdt 6","content":"## AD/EMB-110/8 Amdt 6","sortOrder":1},{"sectionNumber":"Flap Actuators","sectionType":"part","heading":"Flap Actuators","content":"## Flap Actuators","sortOrder":2},{"sectionNumber":"15/2011","sectionType":"part","heading":"15/2011","content":"## 15/2011","sortOrder":3}],"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":4,"scope_assessment":{"changed":false,"description":"Amendment 6 updates the directive to reflect the latest revision of the Brazil State of Design requirement document without expanding applicability. It retains the same inspection/lubrication mandates, intervals and the installation ban; it principally refreshes the requirement reference and sets an effective date (Amendment 6 is issued to reflect the latest revision ...; Compliance/Requirement)."},"complexity_factors":["Prescriptive maintenance with two distinct recurring intervals: Part I at ≤1500 landings or 12 months; Part II at ≤4500 landings or 36 months (Compliance: For Part I/Part II).","Specific applicability limited to EMB-110 aircraft fitted with listed EEMCO part numbers, requiring accurate parts identification and records (Applicability).","Absolute prohibition on installing EEMCO P/N D-2246-3 and D-2246-4 after 3 February 1992 — a retrospective cut‑off that requires verification of current parts on aircraft (Compliance: No flap linear actuators ... shall be installed).","Cross-reference to an external State of Design requirement document (Brazil SAR AD82-07-04 R3 Amdt 39-691): implementers must obtain and follow that document's Part I and Part II procedures (Requirement).","Operational cost and scheduling impact falls on aircraft owners/operators who must perform inspections/lubrication at the mandated intervals and maintain compliance records (Requirement/Compliance).","Amendment history and note that previous compliance times remain as stated introduces administrative tracking of versions for regulators and operators (The compliance times of the previous issue ...).","Safety rationale tied to a specific failure mode (moisture ingress to ball return tube) focuses remediation on a narrow technical cause but requires frontline maintenance to detect/prevent recurrence (Background)."],"plain_english_summary":"This directive requires operators of Embraer EMB-110 aircraft fitted with specified EEMCO flap linear actuators to inspect and lubricate those actuators at set intervals and bans installation of two older actuator part numbers after 3 February 1992. It responds to an incident where moisture ingress caused actuator failure and flap asymmetry; the rule creates recurring maintenance obligations and a parts‑installation prohibition for affected aircraft owners/operators."},"kimi_summary":{"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This is Amendment 6 to an existing Airworthiness Directive. The document explicitly states it merely 'reflects the latest revision of the requirement document' and maintains the same compliance times as the previous issue. The scope remains tightly focused on flap actuator inspection and specific part prohibitions for the EMB-110 aircraft series, consistent with the original safety intent following the moisture-induced actuator failure incident."},"complexity_factors":["Very short document (approximately 300 words)","Only 6 defined part numbers in applicability section","Simple two-part compliance structure with clear time intervals","No nested exceptions or conditional logic","Single cross-reference to Brazilian aviation authority document (SAR AD82-07-04 R3 Amdt 39-691)","Straightforward prohibition on specific part numbers","Minimal legislative machinery — operates as a direct regulatory instrument rather than complex statute"],"plain_english_summary":"This Airworthiness Directive mandates inspections, lubrication and other corrective actions for flap actuators on Embraer EMB-110 Bandeirante aircraft to address moisture-induced actuator failures and prevent sudden flap retraction. It also prohibits installation of two specific actuator models.\n\nIt applies to owners/operators of affected EMB-110s registered in Australia and matters because preventing flap asymmetry reduces the risk of loss of control during critical phases like takeoff and landing."}},"importantCases":[],"_links":{"self":"/api/acts/ad-emb-110-8-amdt-6-flap-actuators","history":"/api/acts/ad-emb-110-8-amdt-6-flap-actuators/history","analysis":"/api/acts/ad-emb-110-8-amdt-6-flap-actuators/analysis","conflicts":"/api/acts/ad-emb-110-8-amdt-6-flap-actuators/conflicts","importantCases":"/api/acts/ad-emb-110-8-amdt-6-flap-actuators/important-cases","documents":"/api/acts/ad-emb-110-8-amdt-6-flap-actuators/documents"}}