{"id":"F2006B09488","name":"AD/EMB-110/48 Amdt 1 - Aileron Spar","slug":"ad-emb-110-48-amdt-1-aileron-spar","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":54009,"registerId":"commonwealth-F2006B09488-current","compilationNumber":null,"startDate":"2026-04-02","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/EMB-110/48 Amdt 1 - Aileron Spar","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)  \nEmbraer EMB-110 (Bandeirante) Series Aeroplanes\n\nAD/EMB-110/48\n\nAmdt 1\n\n  \nAileron Spar 3/95\n\nApplicability: All model 110 Bandeirante series aeroplanes. Requirement: 1. Remove both ailerons from the aircraft.\n\n    2. Remove the push-rod/centre hinge bracket from each aileron.\n\n    3. After first cleaning the area thoroughly, visually inspect the front face of the aileron spar for cracks, paying particular attention to the area near the push- rod/centre hinge bracket attachment holes and the anchor nut rivets.\n\n    4. Remove the lower surface access panel to the rear of the aileron push-rod/centre hinge bracket. After first cleaning the area thoroughly, visually inspect the rear face of the spar, including the nested angles, again paying particular attention to the area near the bracket attachment holes and the anchor nut rivets.\n\nCompliance: Remove, clean and inspect the critical areas before 2000 hours aileron time in service, or before 300 hours aileron time in service since the most recent inspection in accordance with this AD, or before 5 hours aileron time in service after 29 January 1993, whichever occurs last.\n\nRepeat the inspections at intervals not to exceed 300 hours aileron time in service.\n\nAfter installation of an approved repair the inspections may be suspended for up to 2000 hours aileron time in service. Modification in accordance with Embraer Service Bulletin 110-27-0092 cancels the requirements of this AD.\n\nThis Directive is effective 2 March 1995.\n\nBackground: Reports have been received of seventeen aileron spars cracked out of twenty inspected. A cracked spar may reduce the stiffness of the aileron, increasing the likelihood of flutter. Amendment 1 deletes a superfluous note, corrects an error whereby the inboard hinge, rather than the centre hinge was specified and provides terminating action. The Compliance requirement of the original AD is unchanged by this Amendment.","sortOrder":0}],"analysis":{"flash_summary_failed":{"failed":true,"reason":"Unauthenticated. Configure AI_GATEWAY_API_KEY or use a provider module. Learn more: https://ai-sdk.dev/unauthenticated-ai-gateway","source":"analysis-cron"},"kimi_summary":{"content_quality":"ok","complexity_score":3,"scope_assessment":{"changed":false,"description":"This amendment maintains the original scope of ensuring aileron spar integrity. The changes are purely corrective (fixing an error) and additive (providing terminating action), not expansive. The core safety requirement and compliance framework remain identical to the original 1995 directive."},"complexity_factors":["Multiple alternative compliance deadlines requiring calculation of 'whichever occurs last'","Conditional logic for repeat inspection intervals (300 hours)","Exception for approved repairs (inspection suspension up to 2000 hours)","Terminating action through specific service bulletin reference","Technical aviation terminology requiring domain knowledge (aileron spar, flutter, nested angles, anchor nut rivets)","Amendment structure requires cross-referencing with original AD to understand full context"],"plain_english_summary":"This CASA safety directive targets all Embraer EMB-110 Bandeirante operators, requiring removal and inspection of aileron spars for cracks in high‑stress attachment areas after widespread cracking was found—cracked spars can reduce stiffness and cause dangerous flutter. Initial and recurring inspections are mandated (with limited relief if an approved repair is installed), and installing Embraer Service Bulletin 110‑27‑0092 permanently terminates the requirement. Amendment 1 corrects a wording error, removes a note, and adds the modification option; inspection rules are unchanged."},"flash_summary":{"complexity_score":3,"scope_assessment":{"changed":true,"description":"Amendment 1 does not change the core compliance requirement but amends wording: it deletes a superfluous note, corrects an error in hinge identification (the centre hinge is correctly specified rather than the inboard hinge), and provides explicit terminating action by reference to Embraer Service Bulletin 110‑27‑0092. The AD’s inspection obligations, intervals and enforcement remain in force."},"complexity_factors":["Multiple physical steps required (remove ailerons, remove push‑rod/centre hinge bracket, remove lower access panel, clean, inspect front and rear faces and nested angles)","Compliance timing uses alternative thresholds (before 2000 hours, or before 300 hours since last inspection, or before 5 hours after a fixed date — 'whichever occurs last')","Recurring inspections at fixed 300‑hour intervals unless an approved repair is installed (suspension up to 2,000 hours)","Amendment corrects a hinge reference (centre vs inboard) and adds terminating action via a specific Embraer Service Bulletin, so operators must track both the AD and the SB","High reported crack incidence (17 of 20 inspected) increases operational urgency and maintenance burden"],"plain_english_summary":"This Airworthiness Directive requires operators of all Embraer EMB‑110 (Bandeirante) aeroplanes to remove both ailerons, access the hinge/bracket areas, clean and visually inspect the front and rear faces of the aileron spar (paying particular attention to the centre hinge/push‑rod attachment holes and anchor‑nut rivets) to detect cracking that could increase flutter risk. Compliance times and repeat intervals are specified; approved repairs can suspend inspections for up to 2,000 aileron hours and Embraer Service Bulletin 110‑27‑0092 provides terminating action. Operators bear the cost; CASA enforces the directive."}},"importantCases":[],"_links":{"self":"/api/acts/ad-emb-110-48-amdt-1-aileron-spar","history":"/api/acts/ad-emb-110-48-amdt-1-aileron-spar/history","analysis":"/api/acts/ad-emb-110-48-amdt-1-aileron-spar/analysis","conflicts":"/api/acts/ad-emb-110-48-amdt-1-aileron-spar/conflicts","importantCases":"/api/acts/ad-emb-110-48-amdt-1-aileron-spar/important-cases","documents":"/api/acts/ad-emb-110-48-amdt-1-aileron-spar/documents"}}