{"id":"F2010L02004","name":"AD/B767/41 Amdt 1 - Leading Edge Slat Drive Mechanism","slug":"ad-b767-41-amdt-1-leading-edge-slat-drive-mechanism","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":124493,"registerId":"commonwealth-F2010L02004-current","compilationNumber":null,"startDate":"2026-04-03","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"Boeing 767 Series Aeroplanes","sectionType":"division","heading":"Boeing 767 Series Aeroplanes","content":"### Boeing 767 Series Aeroplanes\n\n| AD/B767/41 Amdt 1 | Leading Edge Slat Drive Mechanism | 14/2010 |\n| ----------------- | --------------------------------- | ------- |\n\n| Applicability: | Model 767 series aeroplanes, Groups 1, 2 and 3, as listed in Boeing Alert Service Bulletin 767-27A0095 Revision 3 dated 23 May 1991.                                                                                                                                                                            |\n| -------------- | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |\n| Requirement:   | Unless previously accomplished, action in accordance with the requirements of FAA AD 91-21-10 (Amendment 39-8057).Note 1: Boeing Alert Service Bulletin 767-27A0095 Revision 3 refers.Note 2: FAA AD T90-09-51 preceded 91-21-10.                                                                               |\n| Compliance:    | If a certificate of airworthiness has not been issued for the aircraft - before issue of the certificate of airworthiness.If a certificate of airworthiness has been issued for the aircraft - before further flight after 45 days from the effective date of this Directive.                                   |\n|                | This Amendment becomes effective on 30 July 2010.                                                                                                                                                                                                                                                               |\n| Background:    | This Directive was originally issued in 1990. It specified Alert Service Bulletin767-27A0095 at Revision 1 and FAA AD T90-09-51. Compliance was required at the next “A” check inspection period after 30 September 1990.This Amendment specifies FAA AD 91-21-10 and the Alert Service Bulletin at Revision 3. |\n\n![](image.001.png)  \n  \nDavid Punshon  \nDelegate of the Civil Aviation Safety Authority\n\n9 July 2010","sortOrder":0},{"sectionNumber":"AD/B767/41 Amdt 1","sectionType":"part","heading":"AD/B767/41 Amdt 1","content":"## AD/B767/41 Amdt 1","sortOrder":1},{"sectionNumber":"Leading Edge Slat Drive Mechanism","sectionType":"part","heading":"Leading Edge Slat Drive Mechanism","content":"## Leading Edge Slat Drive Mechanism","sortOrder":2},{"sectionNumber":"14/2010","sectionType":"part","heading":"14/2010","content":"## 14/2010","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"},"kimi_summary":{"content_quality":"ok","complexity_score":3,"scope_assessment":{"changed":false,"description":"This amendment maintains the original scope of the 1990 directive. It updates the referenced technical documents to newer revisions (FAA AD 91-21-10 replacing T90-09-51; Boeing Service Bulletin Revision 3 replacing Revision 1) and tightens the compliance timeframe, but does not expand the applicability to new aircraft types or introduce new categories of requirements. The fundamental purpose — mandating inspection/repair of the leading edge slat drive mechanism on Boeing 767 aircraft — remains unchanged."},"complexity_factors":["Short, single-purpose instrument (approximately 250 words)","Only 2 defined applicability groups (Groups 1, 2 and 3 — though these refer to external Boeing documentation)","Simple conditional structure: two compliance paths based on whether certificate of airworthiness has been issued","Heavy reliance on external documents (FAA AD 91-21-10, Boeing Service Bulletin 767-27A0095 Rev 3) — the actual technical requirements are not reproduced in the text","No nested exceptions or complex cross-referencing within the instrument itself","Clear, tabular format with distinct sections for Applicability, Requirement, Compliance, and Background"],"plain_english_summary":"This CASA Airworthiness Directive mandates inspection and corrective action on the leading edge slat drive mechanism of Boeing 767s, following the FAA AD and Boeing Alert Service Bulletin. It affects operators of the models in Groups 1–3 and must be completed on new aircraft before issue of the certificate of airworthiness and on existing aircraft within 45 days of 30 July 2010. This amendment updates the prior 1990 order by adopting newer technical references; compliance is legally required to ensure safe takeoff/landing performance."},"flash_summary":{"complexity_score":3,"scope_assessment":{"changed":true,"description":"This amendment updates the earlier 1990 Directive by replacing the prior FAA AD (T90-09-51) with FAA AD 91-21-10 and specifying Boeing Alert Service Bulletin 767-27A0095 at Revision 3. It also revises compliance timing (originally 'next A check after 30 September 1990') to deadlines tied to certificate of airworthiness status (before CoA issuance or before further flight after 45 days). Applicability remains Model 767 Groups 1–3; effective date is 30 July 2010."},"complexity_factors":["Cross-reference dependency on external FAA AD 91-21-10 for mandatory actions","Reliance on Boeing Alert Service Bulletin 767-27A0095 Revision 3 for technical procedures","Multiple historical references (previous FAA AD T90-09-51 and earlier SB revision) requiring reconciliation","Applicability limited to Model 767 Groups 1–3 as listed in the service bulletin","Compliance timing conditional on certificate of airworthiness status (before CoA issuance or within 45 days/next flight)","Narrow technical focus (slat drive mechanism) but operational impact on operators' maintenance scheduling and costs"],"plain_english_summary":"This directive requires operators of Boeing 767 Series aeroplanes (Groups 1–3) to inspect and, where required, carry out the work on the leading edge slat drive mechanism by following FAA AD 91‑21‑10 and Boeing Alert Service Bulletin 767‑27A0095 Revision 3. It becomes effective 30 July 2010 and sets specific deadlines: before issue of a certificate of airworthiness for un‑certificated aircraft, or before further flight after 45 days for certificated aircraft.\n\nThe cost and scheduling burden falls on aircraft owners/operators who must follow the external FAA/Boeing documents for the technical steps; the amendment replaces earlier AD/bulletin references and updates the compliance timing."}},"importantCases":[],"_links":{"self":"/api/acts/ad-b767-41-amdt-1-leading-edge-slat-drive-mechanism","history":"/api/acts/ad-b767-41-amdt-1-leading-edge-slat-drive-mechanism/history","analysis":"/api/acts/ad-b767-41-amdt-1-leading-edge-slat-drive-mechanism/analysis","conflicts":"/api/acts/ad-b767-41-amdt-1-leading-edge-slat-drive-mechanism/conflicts","importantCases":"/api/acts/ad-b767-41-amdt-1-leading-edge-slat-drive-mechanism/important-cases","documents":"/api/acts/ad-b767-41-amdt-1-leading-edge-slat-drive-mechanism/documents"}}