{"id":"F2006B11039","name":"AD/KITFOX/1 - Wing Structural Integrity","slug":"ad-kitfox-1-wing-structural-integrity","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":56653,"registerId":"commonwealth-F2006B11039-current","compilationNumber":null,"startDate":"2026-04-02","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/KITFOX/1 - Wing Structural Integrity","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)  \nKitfox Series Aeroplanes\n\nAD/KITFOX/1 Wing Structural Integrity 5/90\n\nApplicability: All models.\n\nRequirement: Carry out an inspection to ascertain structural integrity of the bonding of wing ribs to front tubular spar, using the following method:\n\nRemove wing tips.\n\nGrasp wing structure at tip with one hand at leading edge and other as far aft as possible, and whilst applying a reasonable torsional load, have an observer noting any abnormal wrinkling of wing fabric covering, between, and at all wing rib stations.\n\nRepeat torsional load in opposite direction and further observe. Any abnormal wrinkling is to be investigated by removal of fabric from suspect area, before further flight.\n\nNote: The use of a more positive method for attachment of wing ribs to front spar tube, to a scheme approved by the Authority, would be considered terminating action for this Directive.\n\nCompliance: For aircraft that have exceeded 100 hours total time in service or 1 year since building at 17 May 1990 - Prior to 30 June 1990, and thereafter at intervals not exceeding 100 hours time in service or 12 calendar months, whichever occurs first.\n\nFor aircraft that have not exceeded 100 hours total time in service or 1 year since building at 17 May 1990 \\- Prior to exceeding 100 hours time in service or 1 year since building, whichever occurs first, and thereafter at intervals not exceeding 100 hours time in service or 12 calendar months whichever occurs first.\n\nBackground: Doubt exists as to the durability of the bonding of wing ribs to front spar tube.","sortOrder":0}],"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 is a discrete, single-issue airworthiness directive focused specifically on wing rib bonding in Kitfox aircraft. It has not expanded beyond its original safety purpose."},"complexity_factors":["Single, specific technical requirement with clear procedural steps","Two-tier compliance schedule based on aircraft age/hours (straightforward conditional logic)","No defined terms section — uses plain technical language","Single cross-reference to Civil Aviation Regulations 1998 Part 39 (context only, not operational)","Contains one 'terminating action' provision (permanent fix option)","Short document (approximately 250 words) with single purpose"],"plain_english_summary":"Owners/operators of Kitfox series aeroplanes must inspect wings for possible separation of wing ribs from the front spar tube. A simple twist test at the wingtip checks for fabric wrinkling that indicates rib detachment; if found, strip fabric and investigate before further flight. Older and newer aircraft have near-term and recurring inspection intervals, and inspections can be ended by installing an approved, stronger rib attachment. This prevents in‑flight wing failure."},"flash_summary":{"complexity_score":3,"scope_assessment":{"changed":false,"description":"Scope remains focused on wing‑rib bonding for all Kitfox models and prescribes inspections plus an approved alternative attachment as terminating action. The Directive implements inspection and maintenance obligations rather than expanding to other systems or aircraft types (Applicability; Requirement; Note)."},"complexity_factors":["Clear, procedural inspection method (remove wing tips; apply torsional load; observe fabric wrinkling) (Requirement).","Applicability to all Kitfox models increases total affected fleet but keeps scope uniform (Applicability).","Recurring compliance timing tied to hours-in-service or calendar months, with separate initial thresholds depending on total time or age as of 17 May 1990 (Compliance).","Conditional follow-up work: removal of fabric and inspection if abnormal wrinkling is found, which requires maintenance access and repair ability (Requirement).","Option for terminating action requires Authority approval of an alternative attachment scheme, introducing regulatory discretion and an approval process (Note).","Safety concern stated as bond-durability doubt provides narrow technical focus rather than broad regulatory change (Background)."],"plain_english_summary":"This Directive requires owners/operators of Kitfox series aeroplanes to inspect the bond between wing ribs and the front tubular spar by removing wing tips, applying torsional loads, and watching for abnormal fabric wrinkling; suspect areas must have fabric removed and checked before further flight. A stronger, Authority‑approved method of attaching ribs can be accepted as terminating action. It applies to all Kitfox models and sets recurring inspection intervals because of concerns about bond durability."}},"importantCases":[],"_links":{"self":"/api/acts/ad-kitfox-1-wing-structural-integrity","history":"/api/acts/ad-kitfox-1-wing-structural-integrity/history","analysis":"/api/acts/ad-kitfox-1-wing-structural-integrity/analysis","conflicts":"/api/acts/ad-kitfox-1-wing-structural-integrity/conflicts","importantCases":"/api/acts/ad-kitfox-1-wing-structural-integrity/important-cases","documents":"/api/acts/ad-kitfox-1-wing-structural-integrity/documents"}}