{"id":"F2021L00969","name":"AD/LANCAIR/1 Amdt 2 Canopy Latching","slug":"ad-lancair-1-amdt-2-canopy-latching","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":101976,"registerId":"commonwealth-F2021L00969-current","compilationNumber":null,"startDate":"2026-04-03","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"Lancair Series","sectionType":"part","heading":"Lancair Series","content":"# Lancair Series\n\n| AD/LANCAIR/1 Amdt 2 | Canopy Latching | 14/2021 |\n| ------------------- | --------------- | ------- |\n\n| Applicability: | All Lancair models fitted with Camloc Style Latch mechanism p/n 51L1-1X1AA.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      |\n| -------------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ |\n| Requirement:   | Inspect the canopy internal latching system to ensure that:The latching is readily accessible and requires no exceptional agility or skill in its operation when used in an emergency; andThe method of opening is simple and obvious; andIt is arranged and marked for easy operation, even in darkness; andAny external auxiliary locking device used to secure the aircraft is able to be overridden by the normal internal opening means.Note 1: This inspection must be carried out and certified by an aircraft engineer licence holder licenced in the appropriate category.Note 2: Lancair models fitted with either the alternative lever style latch mechanism, or the Lancair Legacy over centre latching mechanism are not subject to this AD.2.a For aircraft issued with a Certificate of Airworthiness modify the canopy internal latching system in accordance with a modification approved in accordance with Subpart 21M of the Civil Aviation Safety Regulation 1998.2.b. For aircraft issued with an Experimental Certificate modify the canopy internal latching system in accordance with a modification acceptable to CASA or a person who can issue an experimental certificate for amateur built experimental aircraft. |\n| Compliance:    | Before further flight after the commencement date unless accomplished previously, and thereafter at each inspection for maintenance release issue,If the latching system does not fulfil all the criteria of Requirement 1, before issue of:a. Certificate of Airworthiness, orb. Experimental Certificate.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      |\n|                | This AD commences on 10 August 2021.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             |\n| Background:    | A major defect report was received by CASA that indicated difficulty in operating the internal latching system of the canopy and may prevent both normal and emergency egress.Amendment 1 disapplied the AD from certain Lancair models.Amendment 2 changes the applicability of the affected latch mechanism and is not model specific.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         |\n\n  \n![Text\nDescription automatically generated](image.002.jpeg)  \nDavid Punshon  \nDelegate of the Civil Aviation Safety Authority\n\n8 July 2021","sortOrder":0},{"sectionNumber":"AD/LANCAIR/1 Amdt 2","sectionType":"part","heading":"AD/LANCAIR/1 Amdt 2","content":"## AD/LANCAIR/1 Amdt 2","sortOrder":1},{"sectionNumber":"Canopy Latching","sectionType":"part","heading":"Canopy Latching","content":"## Canopy Latching","sortOrder":2},{"sectionNumber":"14/2021","sectionType":"part","heading":"14/2021","content":"## 14/2021","sortOrder":3}],"analysis":{"kimi_summary":{"content_quality":"ok","complexity_score":3,"scope_assessment":{"changed":true,"description":"The original AD (and Amendment 1) applied to specific Lancair models. Amendment 2 shifts from a model-based approach to a component-based approach — targeting any Lancair aircraft with the specific Camloc latch mechanism regardless of model. This broadens applicability beyond the original scope while narrowing it by excluding aircraft with alternative latch types."},"complexity_factors":["Short, single-purpose directive (approximately 400 words)","Only 1 defined term implicitly referenced (the part number 51L1-1X1AA)","Simple conditional structure: two compliance pathways based on certificate type (standard vs experimental)","Clear, enumerated requirements (4 specific criteria in Requirement 1)","Minimal cross-referencing (only one reference to Civil Aviation Safety Regulation 1998, Subpart 21M)","Straightforward compliance timeline with single trigger date"],"plain_english_summary":"This Airworthiness Directive requires owners/operators of Lancair aircraft fitted with the Camloc Style Latch (PN 51L1-1X1AA) to inspect and, if necessary, modify the canopy locking system so it can be opened easily from inside in all conditions (including darkness and with external locks). It affects both certificated and experimental/homebuilt aircraft (with appropriate CASA-approved or acceptable modifications), must be complied with before next flight after 10 Aug 2021 and at routine maintenance, and now applies to any Lancair with that latch."},"flash_summary":{"complexity_score":5,"scope_assessment":{"changed":true,"description":"Yes. Amendment 2 changes the AD’s scope from certain model-based exclusions to a mechanism-based applicability: it now applies to all Lancair aircraft fitted with the specified Camloc style latch p/n 51L1-1X1AA, rather than being limited to particular models (Background; Applicability)."},"complexity_factors":["Narrow technical applicability — affects only Lancair aircraft fitted with Camloc style latch p/n 51L1-1X1AA (Applicability).","Mandatory inspection and certification by a licensed aircraft engineer creates administrative and labour cost and requires appropriate personnel (Requirement; Note 1).","Two different modification approval pathways depending on certificate type: Subpart 21M-approved modification for Certificate of Airworthiness holders (2.a) and CASA-acceptable or authorised-person approval for Experimental Certificate holders (2.b).","Immediate compliance timing: inspection before next flight and re-check at each maintenance-release inspection; failure to meet criteria blocks issue of CoA or Experimental Certificate (Compliance).","Performance-based criteria (e.g. ‘readily accessible’, ‘simple and obvious’, ‘arranged and marked for easy operation’) are subjective and leave room for engineering judgement during certification (Requirement).","Operational constraint requiring external auxiliary locks to be overrideable internally adds a design/retrofit requirement that may affect security choices and hardware fitment (Requirement).","Regulatory discretion via CASA acceptance and Subpart 21M approvals introduces procedural complexity and potential variability in acceptable modifications (2.a, 2.b).","Amendment history alters who is captured by the AD, requiring stakeholders to reassess applicability when hardware or model configurations change (Background)."],"plain_english_summary":"This airworthiness directive requires inspection and, if needed, modification of canopy internal latches on Lancair aircraft fitted with the Camloc style latch p/n 51L1-1X1AA. It applies to owners/operators and maintenance engineers: a licensed aircraft engineer must certify the latch is readily accessible, simple to open (including in darkness) and that any external locks can be overridden; modifications must follow the regulatory approval route for the aircraft’s certificate type."},"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"}},"importantCases":[],"_links":{"self":"/api/acts/ad-lancair-1-amdt-2-canopy-latching","history":"/api/acts/ad-lancair-1-amdt-2-canopy-latching/history","analysis":"/api/acts/ad-lancair-1-amdt-2-canopy-latching/analysis","conflicts":"/api/acts/ad-lancair-1-amdt-2-canopy-latching/conflicts","importantCases":"/api/acts/ad-lancair-1-amdt-2-canopy-latching/important-cases","documents":"/api/acts/ad-lancair-1-amdt-2-canopy-latching/documents"}}