{"id":"F2006L01337","name":"AD/CONVAIR/24 - Main Landing Gear Drag Strut Pivot Bolt","slug":"ad-convair-24-main-landing-gear-drag-strut-pivot-bolt","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":58848,"registerId":"commonwealth-F2006L01337-current","compilationNumber":null,"startDate":"2026-04-02","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"Kelowna Flightcraft (General Dynamics/Co","sectionType":"division","heading":"Kelowna Flightcraft (General Dynamics/Convair) Series Aeroplanes","content":"### Kelowna Flightcraft (General Dynamics/Convair) Series Aeroplanes\n\n| AD/CONVAIR/24 | Main Landing Gear Drag Strut Pivot Bolt | 6/2006 |\n| ------------- | --------------------------------------- | ------ |\n\n| Applicability: | GENERAL DYNAMICS (Convair) Models 340 and 440 aeroplanes including all such model airplanes converted to turbo- propeller power, equipped with main landing gear drag strut pivot bolt assembly Part Numbers (P/N) 340-5110105, or340-5110105-1, or 340-5110105-3.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      |\n| -------------- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |\n| Requirement:   | 1. Unless previously accomplished, inspect the main landing gear drag strut pivot bolt assembly P/N 340-5110105 or 340-5110105-1 or 340- 5110105-3, using magnetic particle inspection procedures, in accordance with Paragraph 2., \"Accomplishment Instructions\" of General Dynamics, Convair Division, Service Bulletin 640(340D)32-14, dated 10 October 1986, or later FAA approved revision.2. If no cracks are found, reinstall the bolt and repeat the bolt inspection in accordance with Requirement 1 of this AD.3. If any crack is found, replace main landing gear drag strut pivot bolt assembly with P/N 340-5110105, 340-5110105-1, 340-5110105-3, 340- 5110105-5 or approved equivalent.4. If a new P/N 340-5110105 or 340-5110105-1 main landing gear drag strut pivot bolt assembly is used as a replacement, repeat the bolt inspection in accordance with Requirement 1 of this AD.5. If a new main landing gear drag strut pivot bolt assembly P/N 340-5110105-3 is used as a replacement part, repeat bolt inspection in accordance with Requirement 1 of this AD.Terminating ActionInstallation of main landing gear drag strut pivot bolt assembly P/N 340-5110105-5 constitutes terminating action for the repetitive inspections required by this AD.Note: FAA AD 87-17-10 Amdt 39-5715 refers. |\n\n| Compliance: | 1. Within 500 hours time-in-service after the effective date of this AD.2. At intervals not to exceed 500 hours time-in-service since last bolt inspection.3. Prior to further flight.4. Within 3,000 hours time-in-service after bolt installation and thereafter at intervals not to exceed 500 hours time-in-service since last bolt inspection.5. Within 8,000 hours time-in-service after bolt installation and thereafter at intervals not to exceed 500 hours time-in-service since last bolt inspection. |\n| ----------- | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |\n|             | This Airworthiness Directive becomes effective on 8 June 2006.                                                                                                                                                                                                                                                                                                                                                                                                                                                   |\n| Background: | This actions detailed in this AD are intended to prevent failure of the main landing gear drag strut pivot bolt and possible subsequent main landing gear collapse.                                                                                                                                                                                                                                                                                                                                              |\n\n![](image.001.png)  \nJames Coyne  \nDelegate of the Civil Aviation Safety Authority\n\n28 April 2006","sortOrder":0},{"sectionNumber":"AD/CONVAIR/24","sectionType":"part","heading":"AD/CONVAIR/24","content":"## AD/CONVAIR/24","sortOrder":1},{"sectionNumber":"Main Landing Gear Drag Strut Pivot Bolt","sectionType":"part","heading":"Main Landing Gear Drag Strut Pivot Bolt","content":"## Main Landing Gear Drag Strut Pivot Bolt","sortOrder":2},{"sectionNumber":"6/2006","sectionType":"part","heading":"6/2006","content":"## 6/2006","sortOrder":3}],"analysis":{"kimi_summary":{"content_quality":"ok","complexity_score":4,"scope_assessment":{"changed":false,"description":"This is a standard, targeted Airworthiness Directive addressing a specific safety-critical component failure mode. The scope remains tightly focused on the main landing gear drag strut pivot bolt assembly for Convair 340/440 series aircraft, consistent with the original safety intent."},"complexity_factors":["Multiple conditional pathways (5 different requirements depending on inspection results and replacement part chosen)","Nested compliance timelines (different intervals based on which replacement part is installed)","Cross-reference to external technical document (General Dynamics Service Bulletin 640(340D)32-14)","Reference to corresponding FAA Airworthiness Directive (87-17-10 Amdt 39-5715)","Specific part number tracking required (5 different part numbers with different compliance implications)","Terminating action concept requires understanding of which part number ends the inspection obligation"],"plain_english_summary":"This CASA Airworthiness Directive mandates magnetic-particle inspection of a specific main landing-gear drag-strut pivot bolt on certain Convair 340/440 (including turboprop conversions) to detect cracks that could cause gear collapse. If cracked, the bolt must be replaced before flight; if not, reinspect every 500 flight hours.\n\nDifferent replacement part numbers set different reinspection intervals, and installing part 340-5110105-5 ends the repetitive inspections. Owners/operators of affected aircraft must comply."},"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":6,"scope_assessment":{"changed":false,"description":"The AD applies specifically to General Dynamics (Convair) Models 340 and 440 (including turbo‑prop conversions) and to listed pivot bolt P/Ns (Applicability). It prescribes inspections, conditional replacements, repeat intervals and a specific terminating-action part (Requirements; Compliance). The instrument does not broaden applicability beyond the listed models/P/Ns and functions as a maintenance mandate rather than an expansion of subject scope; it cross-references FAA AD 87-17-10 but does not, on its face, change the class of affected aircraft."},"complexity_factors":["Multiple affected part numbers and converted aircraft in Applicability (Models 340 and 440, including turbo-prop conversions).","Detailed inspection procedure requirement referencing Paragraph 2, 'Accomplishment Instructions' of Service Bulletin 640(340D)32-14 (Requirement 1) — procedural dependence on SB content.","Magnetic particle inspection as mandatory NDT method (Requirement 1) imposes specialised tooling and skills.","Tiered outcomes: no-crack reinstall and repeat inspection (Requirement 2); cracked → replacement prior to further flight (Requirement 3 & Compliance 3) — immediate operational disruption and safety-driven urgency.","Multiple replacement options with different follow-up intervals: new P/N 340-5110105 or -1 require reinspection within 3,000 hours then 500‑hour repeats (Requirement 4 & Compliance 4); P/N 340-5110105-3 has different timing (Requirement 5 & Compliance 5).","Terminating action limited to installation of P/N 340-5110105-5 only (Requirement 'Terminating Action') — creates upgrade pathway but only for specific part.","Allowance for 'approved equivalent' replacement (Requirement 3) introduces regulatory approval discretion and potential administrative delay.","Staggered compliance deadlines: initial compliance within 500 hours TIS and repeating intervals not exceeding 500 hours (Compliance 1 & 2) — scheduling and cost implications for operators.","Cross-reference to FAA AD 87-17-10 (Note) and potential dependencies on external approvals or prior FAA findings."],"plain_english_summary":"This Airworthiness Directive requires magnetic-particle inspection of the main landing-gear drag-strut pivot bolts (P/Ns 340-5110105, -1, -3) on General Dynamics (Convair) Models 340 and 440, mandates replacement if any crack is found, sets repeat inspection intervals, and makes installation of P/N 340-5110105-5 a terminating action. It affects aircraft operators and maintenance organisations, who must follow Service Bulletin 640(340D)32-14, bear inspection and replacement costs, and manage aircraft downtime to prevent possible gear collapse."}},"importantCases":[],"_links":{"self":"/api/acts/ad-convair-24-main-landing-gear-drag-strut-pivot-bolt","history":"/api/acts/ad-convair-24-main-landing-gear-drag-strut-pivot-bolt/history","analysis":"/api/acts/ad-convair-24-main-landing-gear-drag-strut-pivot-bolt/analysis","conflicts":"/api/acts/ad-convair-24-main-landing-gear-drag-strut-pivot-bolt/conflicts","importantCases":"/api/acts/ad-convair-24-main-landing-gear-drag-strut-pivot-bolt/important-cases","documents":"/api/acts/ad-convair-24-main-landing-gear-drag-strut-pivot-bolt/documents"}}