{"id":"F2009L02072","name":"AD/PC-12/32 Amdt 2 - Nose Landing Gear Drag Link","slug":"ad-pc-12-32-amdt-2-nose-landing-gear-drag-link","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":140161,"registerId":"commonwealth-F2009L02072-current","compilationNumber":null,"startDate":"2026-04-03","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"Pilatus PC-12 Series Aeroplanes","sectionType":"division","heading":"Pilatus PC-12 Series Aeroplanes","content":"### Pilatus PC-12 Series Aeroplanes\n\n| AD/PC-12/32 Amdt 2 | Nose Landing Gear Drag Link | 7/2009 DM |\n| ------------------ | --------------------------- | --------- |\n\n| Applicability: | Model PC-12, PC-12/45 and PC-12/47 aircraft, with manufacturer serial numbers 101 through 544, and 546 through 888.Model PC-12/47E aircraft, with manufacturer serial numbers 545, and 1001 through 1150. |\n| -------------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |\n| Requirement: | 1. Amend the operator’s approved aircraft maintenance programme to incorporate the structural, component and miscellaneous limitations defined in Pilatus PC-12 Temporary Revision No. 04-02, document 12-A-04-00-00-00A-00T-A, dated28 January 2009, (for PC-12, PC-12/45 and PC-12/47 aircraft), and document12-B-04-00-00-00A-000A-A, Revision 1, dated 27 January 2009, (for PC-12/47E aircraft), or later EASA approved revisions.2. Accomplish the initial and repetitive inspections of the nose landing gear right hand upper drag link part number 532.20.12.140 or 532.20.12.289 in accordance with the compliance schedule as specified in Pilatus PC-12 Temporary Revision No. 04-02, document 12-A-04-00-00-00A-00T-A, dated 28 January 2009, (for PC-12, PC-12/45 and PC-12/47 aircraft), and document 12-B-04-00-00-00A-000A-A, Revision 1, dated 27 January 2009, (for PC-12/47E aircraft); or later EASA approved revisions.The 4,000 landing life-limit for part number 532.20.12.140 nose landing gear right hand drag link introduced by superseded FOCA AD HB 2002-271 remains valid.Replacement of the nose landing gear right hand upper drag link part number 532.20.12.140 or 532.20.12.289 with the newly designed nose landing gear right hand upper drag link with a part number 532.20.12.296 drag link constitutes terminating action for the repetitive inspections required by this Directive.Note: EASA AD 2009-0086 refers. |\n| Compliance: | 1. Within 30 days after 25 May 2009, unless already accomplished.2. As specified in Requirement 2. |\n| | This Amendment becomes effective on 25 May 2009. |\n\n| Background: | Reports were received by FOCA of uncommanded extension of the nose landing gear during cruise flight. Investigation revealed certain nose landing gear drag links had failed due to fatigue cracking. Complete failure of these drag links could result in gear collapse during landing.Amendment 1 was published in response to a new EASA AD, which was prompted when a recent investigation of a new occurrence of cracking revealed that the replacement nose landing gear right hand upper drag link part number 532.20.12.289 had also suffered fatigue cracking, but in a different place.Amendment 2 is issued to correct an administrative error in the issue of the previous amendment which prevented it taking effect on the required date. There is no change to the technical requirements. |\n| ----------- | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |\n\n![](image.001.png) \nDavid Villiers \nDelegate of the Civil Aviation Safety Authority\n\n22 May 2009","sortOrder":0},{"sectionNumber":"AD/PC-12/32 Amdt 2","sectionType":"part","heading":"AD/PC-12/32 Amdt 2","content":"## AD/PC-12/32 Amdt 2","sortOrder":1},{"sectionNumber":"Nose Landing Gear Drag Link","sectionType":"part","heading":"Nose Landing Gear Drag Link","content":"## Nose Landing Gear Drag Link","sortOrder":2},{"sectionNumber":"7/2009 DM","sectionType":"part","heading":"7/2009 DM","content":"## 7/2009 DM","sortOrder":3}],"analysis":{"flash_summary_failed":{"failed":true,"reason":"Unauthenticated. Configure AI_GATEWAY_API_KEY or use a provider module. Learn more: https://ai-sdk.dev/unauthenticated-ai-gateway","source":"analysis-cron"},"kimi_summary":{"content_quality":"ok","complexity_score":4,"scope_assessment":{"changed":false,"description":"This is Amendment 2 to an existing Airworthiness Directive. The Background explicitly states 'There is no change to the technical requirements' — it merely corrects an administrative error in Amendment 1 that prevented it taking effect on the required date. The scope remains limited to inspection and potential replacement of the nose landing gear drag link, consistent with the original safety concern."},"complexity_factors":["Multiple aircraft variants with different serial number ranges requiring careful cross-referencing","Two different technical document references with similar but distinct document numbers (12-A-04-00-00-00A-00T-A vs 12-B-04-00-00-00A-000A-A)","Three different part numbers involved (two subject to inspection, one as terminating action)","Reference to superseded foreign authority directive (FOCA AD HB 2002-271) and EASA AD 2009-0086 creating external dependency","Amendment structure requiring understanding of previous versions (Amendment 1, Amendment 2) and administrative corrections","Dual compliance deadlines (30 days for program amendment, 'as specified' for inspections)"],"plain_english_summary":"This CASA Airworthiness Directive mandates owners/operators of affected Pilatus PC-12 series (specified serial ranges) to update maintenance programs and perform scheduled inspections of the right-hand upper nose-landing-gear drag link (older parts 532.20.12.140/289), keeping the 4,000-landing life limit for the old part. Replacing it with the redesigned part (532.20.12.296) removes repetitive inspections.\n\nIt addresses metal-fatigue cracking that can cause nose-gear collapse or uncommanded extension, preventing accidents by catching cracks early."},"flash_summary":{"complexity_score":4,"scope_assessment":{"changed":false,"description":"Amendment 2 corrects an administrative error that prevented the prior amendment taking effect on its required date; it does not change the technical requirements, affected parts, or applicability. The Directive’s substantive scope — mandatory incorporation of the Pilatus temporary revisions, inspection regime, life‑limit retention, and terminating action by part replacement — remains the same."},"complexity_factors":["Targeted applicability by model and discrete serial‑number ranges (includes gaps), which requires fleet‑level filtering","Mandates incorporation of specific Pilatus Temporary Revisions (document numbers and dates) or later EASA‑approved revisions into operator maintenance programmes","Requires initial and repetitive inspections tied to the manufacturer’s compliance schedule rather than explicit intervals in the Directive","Multiple part numbers involved: affected parts 532.20.12.140 and 532.20.12.289, with terminating action when replaced by 532.20.12.296","Retains an existing 4,000‑landing life‑limit for part 532.20.12.140 introduced by a prior FOCA AD","Short compliance deadline for initial amendment (within 30 days after 25 May 2009) creates immediate operational burden","Cross‑references to EASA AD 2009‑0086 and prior FOCA AD HB 2002‑271 increase reliance on external regulatory and manufacturer documents","Administrative amendment (AMDT 2) corrects an effective‑date error but leaves technical requirements unchanged, so there is limited substantive change","Safety‑critical nature (fatigue failure risk leading to gear collapse) raises consequences for non‑compliance"],"plain_english_summary":"This Directive orders operators of specified Pilatus PC‑12 series aeroplanes (particular serial number ranges) to update their approved maintenance programmes and to carry out initial and repetitive inspections of the right‑hand upper nose landing gear drag link (specific part numbers). A 4,000‑landing life limit for one part remains; fitting the redesigned part number 532.20.12.296 ends the inspection requirement. It affects aircraft operators (who must pay for inspections and any replacements) and is enforced by the Civil Aviation Safety Authority in response to fatigue cracking reports that risk gear collapse."}},"importantCases":[],"_links":{"self":"/api/acts/ad-pc-12-32-amdt-2-nose-landing-gear-drag-link","history":"/api/acts/ad-pc-12-32-amdt-2-nose-landing-gear-drag-link/history","analysis":"/api/acts/ad-pc-12-32-amdt-2-nose-landing-gear-drag-link/analysis","conflicts":"/api/acts/ad-pc-12-32-amdt-2-nose-landing-gear-drag-link/conflicts","importantCases":"/api/acts/ad-pc-12-32-amdt-2-nose-landing-gear-drag-link/important-cases","documents":"/api/acts/ad-pc-12-32-amdt-2-nose-landing-gear-drag-link/documents"}}