{"id":"F2006L00443","name":"AD/DHC-8/107 - Outboard Flap Front Spar Attachment Fittings","slug":"ad-dhc-8-107-outboard-flap-front-spar-attachment-fittings","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":117131,"registerId":"commonwealth-F2006L00443-current","compilationNumber":null,"startDate":"2026-04-03","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"Bombardier (Boeing Canada/De Havilland) ","sectionType":"division","heading":"Bombardier (Boeing Canada/De Havilland) DHC-8 Series Aeroplanes","content":"### Bombardier (Boeing Canada/De Havilland) DHC-8 Series Aeroplanes\n\n| AD/DHC-8/107 | Outboard Flap Front SparAttachment Fittings | 3/2006 |\n| ------------ | ------------------------------------------- | ------ |\n\n| Applicability: | Model DHC-8-400, DHC-8-401, and DHC-8-402 aircraft, serial numbers 4001, and 4003 through 4093.                                                                                                                                                                                                                                                                                            |\n| -------------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ |\n| Requirement:   | Action in accordance with the requirements of Transport Canada AD CF-2004-11.Note: Bombardier Alert Service Bulletin A84-57-06 Revision B refers.                                                                                                                                                                                                                                          |\n| Compliance:    | As specified in the Requirement document, with a revised effective date of16 March 2006.                                                                                                                                                                                                                                                                                                   |\n|                | This Airworthiness Directive becomes effective on 16 March 2006.                                                                                                                                                                                                                                                                                                                           |\n| Background:    | The manufacturer received reports of loose flap front spar attachment fittings at the No. 4 and No. 5 flap track locations. Upon removal of the fittings, it was discovered that the fittings, and the flap front spar web to which they are mounted, had elongated attachment holes. In addition, the lugs of certain attachment fittings were found to be chafing with flap track No. 4. |\n\n![](image.001.png)  \nDavid Villiers  \nDelegate of the Civil Aviation Safety Authority\n\n3 February 2006","sortOrder":0},{"sectionNumber":"AD/DHC-8/107","sectionType":"part","heading":"AD/DHC-8/107","content":"## AD/DHC-8/107","sortOrder":1},{"sectionNumber":"Outboard Flap Front Spar Attachment Fitt","sectionType":"part","heading":"Outboard Flap Front Spar Attachment Fittings","content":"## Outboard Flap Front Spar  \nAttachment Fittings","sortOrder":2},{"sectionNumber":"3/2006","sectionType":"part","heading":"3/2006","content":"## 3/2006","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":3,"scope_assessment":{"changed":false,"description":"The directive confines its scope to the listed DHC‑8‑400 series serial numbers and requires actions specified in Transport Canada AD CF‑2004‑11 and the Bombardier service bulletin. There is no indication in the text that the applicability or obligations were broadened beyond that original framing."},"complexity_factors":["Narrow technical scope: concerns specific outboard flap front spar attachment fittings (background describes loose fittings, elongated holes, chafing).","Limited applicability: only Model DHC‑8‑400/401/402 with listed serial numbers (4001, 4003–4093).","Cross-reference to foreign directive: mandating compliance with Transport Canada AD CF‑2004‑11 rather than setting standalone procedures.","Reliance on manufacturer service information: Bombardier Alert Service Bulletin A84‑57‑06 Revision B is referenced for corrective action.","Compliance timing: effective date specified (16 March 2006) requires operators to schedule inspections/repairs promptly.","Operational burden rests on aircraft operators/owners to perform inspections, removals and any repairs or replacements indicated by the referenced documents."],"plain_english_summary":"This Airworthiness Directive requires operators of specified DHC‑8‑400 series aeroplanes (serials 4001, 4003–4093) to inspect and, if necessary, repair or replace outboard flap front spar attachment fittings in accordance with Transport Canada AD CF‑2004‑11 and the referenced Bombardier service bulletin. It responds to reports of loose fittings and elongated attachment holes; operators bear the cost and must comply by the effective date (16 March 2006), with the regulator enforcing the requirement."},"kimi_summary":{"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This is a standard, narrow Airworthiness Directive addressing a specific mechanical defect in specific aircraft. It has not expanded beyond its original safety purpose."},"complexity_factors":["Very short document (approximately 200 words of substantive content)","Only 3 defined applicability criteria (specific aircraft models and serial numbers)","Single requirement referencing external documents rather than detailing technical steps","No nested exceptions or conditional logic — straightforward compliance deadline","No cross-references to other legislation beyond the referenced Canadian AD and manufacturer bulletin"],"plain_english_summary":"This AD mandates inspections and repairs of the outboard flap front spar attachment fittings on specific Bombardier DHC‑8‑400 aircraft (serials 4001, 4003–4093) after discovery of elongated bolt holes and chafing. It requires operators to follow Transport Canada AD CF‑2004‑11 and Bombardier Alert Service Bulletin A84‑57‑06 Rev B, with compliance by 16 March 2006. This is legally binding to prevent flap failure in flight."}},"importantCases":[],"_links":{"self":"/api/acts/ad-dhc-8-107-outboard-flap-front-spar-attachment-fittings","history":"/api/acts/ad-dhc-8-107-outboard-flap-front-spar-attachment-fittings/history","analysis":"/api/acts/ad-dhc-8-107-outboard-flap-front-spar-attachment-fittings/analysis","conflicts":"/api/acts/ad-dhc-8-107-outboard-flap-front-spar-attachment-fittings/conflicts","importantCases":"/api/acts/ad-dhc-8-107-outboard-flap-front-spar-attachment-fittings/important-cases","documents":"/api/acts/ad-dhc-8-107-outboard-flap-front-spar-attachment-fittings/documents"}}