{"id":"F2011L01599","name":"AD/EMB-110/13 Amdt 7 - Rudder Upper Hinge Support","slug":"ad-emb-110-13-amdt-7-rudder-upper-hinge-support","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":125949,"registerId":"commonwealth-F2011L01599-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-110/13 Amdt 7 | Rudder Upper Hinge Support | 16/2011 |\n| -------------------- | -------------------------- | ------- |\n\n| Applicability: | All models S/Nos 110001 thru 110141, 110143 thru 110146, 110148, 110149, 110152, 110153, 110156, 110157, 110160, 110161, 110164, 110165, 110168 thru 110170, 110172 thru 110178, 110180, 110181, 110183, 110184, 110186, 110187, 110189, 110190, 110192 thru 110359, 110361 thru 110473, and 110475 thru 110480 |\n| -------------- | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |\n| Requirement:   | 1. Action in accordance with Embraer Service Bulletin 110-055-0017 Rev 04.                                                                                                                                                                                                                                      |\n|                | 2. (a) With the rudder removed from the aircraft, perform a dye penetrant inspection of the rudder upper hinge bracket, P/N 4A-3441, paying particular attention to the areas under and around the bolt supporting flange, or                                                                                   |\n|                | 2. (b) With the rudder in situ, perform a detailed visual inspection of both parts of the rudder upper hinge bracket P/N 4A-3441, paying particular attention to the areas under and around the bolt supporting flange.                                                                                         |\n| Compliance:    | For Requirement 1:                                                                                                                                                                                                                                                                                              |\n|                | Part I - Unless already accomplished, within 300 hours time in service after7 June 1989.                                                                                                                                                                                                                        |\n|                | Part II - Within 300 hours time in service after 7 June 1989, and thereafter at each C type inspection; until modified in accordance with Part III of the Requirement document.                                                                                                                                 |\n|                | For Requirement 2. (a):                                                                                                                                                                                                                                                                                         |\n|                | Within 600 hours time in service after 27 December 1990, and thereafter at each C type inspection.                                                                                                                                                                                                              |\n|                | For Requirement 2. (b):                                                                                                                                                                                                                                                                                         |\n|                | Within 300 hours time in service after 11 July 1991, and thereafter at each B2 type inspection.                                                                                                                                                                                                                 |\n|                | The compliance times of the previous issue of this Directive are as stated.                                                                                                                                                                                                                                     |\n\n|             | This Amendment becomes effective on 5 August 2011.                                                                                                                                                               |\n| ----------- | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |\n| Background: | Cracks in the rudder upper hinge support structure have been reported to the manufacturer. Amendment 3 was the result of further cracking due to rudder installation problems and also extended the periodicity. |\n|             | Amendment 4 introduced an inspection of the rudder upper hinge brackets following three local reports of cracking.                                                                                               |\n|             | Amendment 5 was issued to correct anomalies in Requirement and Background information, and introduce an alternative visual inspection for Requirement 2 (b).                                                     |\n|             | Amendment 6 aligned the repeat inspection interval with existing scheduled inspections to include 5% tolerance on inspection intervals.                                                                          |\n|             | Amendment 7 is issued to align with the latest revision status of Embraer Service Bulletin 110-055-0017.                                                                                                         |\n\n![](image.001.png)  \nCharles Lenarcic  \nDelegate of the Civil Aviation Safety Authority\n\n1 August 2011","sortOrder":0},{"sectionNumber":"AD/EMB-110/13 Amdt 7","sectionType":"part","heading":"AD/EMB-110/13 Amdt 7","content":"## AD/EMB-110/13 Amdt 7","sortOrder":1},{"sectionNumber":"Rudder Upper Hinge Support","sectionType":"part","heading":"Rudder Upper Hinge Support","content":"## Rudder Upper Hinge Support","sortOrder":2},{"sectionNumber":"16/2011","sectionType":"part","heading":"16/2011","content":"## 16/2011","sortOrder":3}],"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"},"flash_summary":{"complexity_score":5,"scope_assessment":{"changed":true,"description":"The directive's scope evolved through amendments: Amendment 3 extended periodicity and addressed further cracking; Amendment 4 added inspections after additional local cracking reports; Amendment 5 corrected Requirement wording and introduced an alternative visual inspection (Requirement 2(b)); Amendment 6 aligned repeat intervals with scheduled inspections and added a 5% tolerance; Amendment 7 aligned the AD with the latest Service Bulletin revision (Background; Requirement 2(a)/(b); Compliance). The net effect expanded inspection options and adjusted timing while keeping the same affected aircraft group."},"complexity_factors":["Long, specific applicability list covering many serial numbers (Applicability).","Two distinct inspection methods with different conditions and intervals: dye‑penetrant with rudder removed (Requirement 2(a)) versus detailed visual with rudder in situ (Requirement 2(b)).","Multiple, staggered compliance windows tied to dates and flight hours for Parts I/II and Requirements 2(a)/2(b) (Compliance: For Requirement 1; For Requirement 2(a); For Requirement 2(b)).","Repeat inspections linked to existing scheduled maintenance levels (C type and B2 type inspections), including referenced tolerance and periodicity alignment (Compliance; Amendment 6 note).","Dependence on an external document for mandatory content and procedures (Embraer Service Bulletin 110‑055‑0017 Rev 04; Requirement 1).","Operational burden variability: removal of the rudder increases labour/time/cost compared with in‑situ visual inspection (Requirement 2(a) vs 2(b)).","Series of prior amendments that changed inspection scope, methods and intervals, requiring operators to track historical and current versions (Background: Amendments 3–7).","Regulatory discretion limited but present in that the directive prescribes methods and timing while allowing an alternative inspection approach (Requirement 2(a)/(b))."],"plain_english_summary":"This airworthiness directive requires operators of specific Embraer EMB‑110 serial-number aeroplanes to inspect the rudder upper hinge support and to carry out any required repair or modification in accordance with Embraer Service Bulletin 110‑055‑0017 Rev 04. It prescribes either a dye‑penetrant inspection with the rudder removed or a detailed visual inspection with the rudder in place, and ties repeat checks to existing C and B2 scheduled inspections.\n\nAircraft operators and maintenance organisations must arrange and pay for the inspections and any repairs within the stated flight‑hour windows; the regulator sets the timing and permits an alternative inspection method (Requirement 2(a) vs 2(b))."},"kimi_summary":{"content_quality":"ok","complexity_score":4,"scope_assessment":{"changed":true,"description":"Originally intended to address specific cracking reports in the rudder upper hinge support, this directive has expanded significantly through 7 amendments. It has evolved from a simple inspection requirement to a complex regime with: multiple inspection methods (dye penetrant vs visual), alternative compliance paths (rudder removed vs in situ), alignment with external manufacturer service bulletins, tolerance adjustments for inspection intervals (5% tolerance added in Amendment 6), and retrospective application to aircraft modified under earlier versions. The scope has grown from reactive crack-fixing to a comprehensive ongoing maintenance protocol."},"complexity_factors":["Multiple amendment history (7 versions) with cumulative changes to requirements, deadlines, and inspection methods","Complex applicability table listing approximately 470 specific aircraft serial numbers with gaps and ranges","Nested conditional compliance deadlines based on: (a) which requirement applies, (b) which inspection method is chosen, (c) whether prior modifications were done, and (d) specific historical effective dates (1989, 1990, 1991)","Cross-reference to external technical document (Embraer Service Bulletin 110-055-0017 Rev 04) without reproducing its contents","Technical aviation terminology requiring domain knowledge (dye penetrant inspection, C-type inspection, B2-type inspection, P/N part numbers)"],"plain_english_summary":"This AD from CASA mandates inspection and corrective action on the rudder upper hinge support of specified Embraer EMB-110 Bandeirante aircraft after cracks were found that could cause loss of directional control. Owners/operators of about 470 affected airframes must follow Embraer Service Bulletin 110‑055‑0017 Rev 04 to modify/replace the part and perform either a dye‑penetrant inspection with the rudder removed or a detailed visual check, to specified compliance intervals. This is the AD’s seventh amendment."}},"importantCases":[],"_links":{"self":"/api/acts/ad-emb-110-13-amdt-7-rudder-upper-hinge-support","history":"/api/acts/ad-emb-110-13-amdt-7-rudder-upper-hinge-support/history","analysis":"/api/acts/ad-emb-110-13-amdt-7-rudder-upper-hinge-support/analysis","conflicts":"/api/acts/ad-emb-110-13-amdt-7-rudder-upper-hinge-support/conflicts","importantCases":"/api/acts/ad-emb-110-13-amdt-7-rudder-upper-hinge-support/important-cases","documents":"/api/acts/ad-emb-110-13-amdt-7-rudder-upper-hinge-support/documents"}}