{"id":"F2006B09312","name":"AD/EC 120/6 Amdt 1 - Yaw Control","slug":"ad-ec-120-6-amdt-1-yaw-control","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":53431,"registerId":"commonwealth-F2006B09312-current","compilationNumber":null,"startDate":"2026-04-02","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/EC 120/6 Amdt 1 - Yaw Control","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)  \n\nAIRWORTHINESS DIRECTIVE\n\n![](image.001.png)\n\n![](image.001.png)  \nFor the reasons set out in the background section, the CASA delegate whose signature appears below revokes Airworthiness Directive (AD) AD/EC 120/6 and issues the following AD under subregulation 39.1 (1) of CAR 1998. The AD requires that the action set out in the requirement section (being action that the delegate considers necessary to correct the unsafe condition) be taken in relation to the aircraft or aeronautical product mentioned in the applicability section: (a) in the circumstances mentioned in the requirement section; and (b) in accordance with the instructions set out in the requirement section; and (c) at the time mentioned in the compliance section.\n\nEurocopter EC 120 Series Helicopters\n\nAD/EC 120/6\n\nAmdt 1\n\n  \nYaw Control 2/2002\n\nTX\n\nApplicability: Model EC 120 B helicopters, with serial numbers up to and including serial number 1278.\n\nRequirement: Install object protectors on the cabin floor in accordance with paragraph 2.B of Eurocopter Alert Service Bulletin No. 67A005.\n\nNote: DGAC AD 2001-386-007(A) refers.\n\nCompliance: Within 7 days of receipt of the components or before 28 February 2002, whichever occurs first.\n\nThis amendment becomes effective on 7 January 2002.\n\nBackground: The DGAC received a report of yaw control jamming that was caused by an object that had slid between the canopy and the cabin floor.\n\nAmendment 1 amends the compliance date from 31 December 2001 to 28 February 2002 due to the manufacturer being unable to supply components within specified compliance time.\n\nThe original issue of this Airworthiness Directive became effective on 1 November 2001.\n\n![Signature of Eugene Paul Holzapfel, Delegate of the Civil Aviation Safety Authority.](image.002.png)  \n\nEugene Paul Holzapfel\n\nDelegate of the Civil Aviation Safety Authority 3 January 2002\n\n![](image.001.png)  \n\nThe above AD is notified in the Commonwealth of Australia Gazette on 7 January 2002.\n\n  \nPage 1 of 1","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"},"flash_summary":{"complexity_score":2,"scope_assessment":{"changed":false,"description":"The amendment does not change which helicopters are affected or what must be done. It only extends the compliance deadline (from 31 Dec 2001 to 28 Feb 2002) because the manufacturer could not supply components within the original timeframe (Amendment 1 / Background)."},"complexity_factors":["Narrow applicability: single helicopter model and defined serial-number range (Applicability).","Single, discrete corrective action: install object protectors as specified by the manufacturer (Requirement: Eurocopter Alert Service Bulletin No. 67A005).","Short, fixed compliance window with an alternative trigger (within 7 days of receipt of components or before 28 Feb 2002) increases scheduling pressure on operators (Compliance).","Dependence on manufacturer supply for components created a need to amend the compliance date (Amendment 1 / Background).","Issued under a specific statutory power (CAR subregulation 39.1(1)), creating a mandatory regulatory duty for affected operators (opening paragraph).","Reference to a foreign authority AD (DGAC AD 2001-386-007(A)) adds cross-jurisdictional traceability but no extra procedural steps in this text (Note)."],"plain_english_summary":"**Summary:** This Airworthiness Directive requires owners/operators of Eurocopter EC120B helicopters (serials up to 1278) to install object protectors on the cabin floor to prevent yaw-control jamming from objects slipping between the canopy and floor.\n\nCompliance is required within 7 days of receiving components or by 28 Feb 2002; CASA extended the original 31 Dec 2001 deadline because the manufacturer could not supply parts. Costs and fitting obligations fall on aircraft owners/operators; the AD is issued under CAR subreg 39.1(1)."},"kimi_summary":{"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This is a minor amendment extending a compliance deadline. The scope remains exactly as originally intended — addressing a specific mechanical safety issue in a defined fleet of helicopters."},"complexity_factors":["Single, specific aircraft model and serial number range","One clear mechanical action required (install object protectors)","Simple compliance deadline with one conditional ('whichever occurs first')","No nested definitions or cross-references to other legislation","Background and reasoning clearly stated in plain language"],"plain_english_summary":"**What this is:** An Airworthiness Directive (AD) — essentially a mandatory safety order for aircraft.\n\n**What it does:** Requires owners/operators of specific Eurocopter EC 120 B helicopters to install protective covers on the cabin floor to stop objects from sliding under the canopy and jamming the yaw control (the pedals that steer the helicopter left and right).\n\n**Who it affects:** Anyone operating EC 120 B helicopters with serial numbers up to 1278.\n\n**Why it matters:** A jammed yaw control means the pilot can't steer the helicopter properly — a serious safety risk. This AD was issued after French authorities (DGAC) reported exactly this problem caused by loose objects sliding into the control mechanism.\n\n**The change in this version:** The deadline was extended from 31 December 2001 to 28 February 2002 because the manufacturer couldn't supply the parts in time."}},"importantCases":[],"_links":{"self":"/api/acts/ad-ec-120-6-amdt-1-yaw-control","history":"/api/acts/ad-ec-120-6-amdt-1-yaw-control/history","analysis":"/api/acts/ad-ec-120-6-amdt-1-yaw-control/analysis","conflicts":"/api/acts/ad-ec-120-6-amdt-1-yaw-control/conflicts","importantCases":"/api/acts/ad-ec-120-6-amdt-1-yaw-control/important-cases","documents":"/api/acts/ad-ec-120-6-amdt-1-yaw-control/documents"}}