{"id":"F2006B07529","name":"AD/UH-1/17 - Tail Rotor Grips - 2","slug":"ad-uh-1-17-tail-rotor-grips-2","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":50077,"registerId":"commonwealth-F2006B07529-current","compilationNumber":null,"startDate":"2026-04-02","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"AIRWORTHINESS DIRECTIVE","sectionType":"part","heading":"AIRWORTHINESS DIRECTIVE","content":"# AIRWORTHINESS 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 issues the following Airworthiness Directive (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\nBell UH-1 Series Helicopters","sortOrder":0},{"sectionNumber":"AD/UH-1/17 Tail Rotor Grips - 2 9/2002 T","sectionType":"part","heading":"AD/UH-1/17 Tail Rotor Grips - 2 9/2002 TX","content":"# AD/UH-1/17 Tail Rotor Grips - 2 9/2002 TX\n\nApplicability: Model HH-1K, TH-1F, TH-1L, UH-1A, UH-1B, UH-1E, UH-1F, UH-1H, UH-1L,\n\nand UH-1P; and Southwest Florida Aviation SW204, SW204HP, SW205, and SW205A-1 helicopters manufactured by Bell Helicopters Textron Inc. for the Armed Forces of the United States, with tail rotor grip part number 205-011-711-101, installed.\n\nRequirement: Clean the affected grip. Determine if the tail rotor grip is made of steel by placing a magnet on the exterior of the main body of the tail rotor grip. Do not make a determination by placing the magnet on the steel bushing or steel interior liner. If the main body of the tail rotor grip is not made of steel, replace it with a serviceable steel tail rotor grip. Only replacement tail rotor grips made of steel are eligible for installation.\n\nNote: FAA Emergency AD 2002-13-51 refers.\n\nCompliance: Before further flight after 3 July 2002, unless already accomplished.\n\nThis Airworthiness Directive becomes effective on 3 July 2002.\n\nBackground: The FAA received reports that tail rotor grips, part number 204-011-728-019, were re-marked as part number 205-011-711-101 and may have been installed on Model 204 and 205 helicopters. These tail rotor grips may also be installed on similar restricted category military surplus helicopters.\n\n![Signature of David Alan Villiers Delegate of the Civil Aviation Safety Authority](image.002.jpeg)  \n\nDavid Alan Villiers\n\nDelegate of the Civil Aviation Safety Authority 1 July 2002\n\n![](image.001.png)","sortOrder":1}],"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 AD confines action to aircraft with the identified part number and requires inspection and replacement only where the main body is non‑steel. This aligns with the background report of re‑marked parts and does not broaden applicability beyond the stated models and part number."},"complexity_factors":["Narrow applicability: specific models and a single part number (205-011-711-101) are targeted.","Simple, non‑destructive test required: place a magnet on the exterior main body of the grip (do not use the magnet on the steel bushing or interior liner).","Preparatory step required: affected grip must be cleaned before testing.","Immediate compliance timing: mandated before further flight after 3 July 2002, creating potential short-term operational disruption.","Replacement constraint: only steel replacement grips are eligible for installation, creating a parts‑sourcing requirement.","Regulatory authority: directive issued by CASA delegate under CAR 1998 subregulation 39.1(1).","Cross‑marking risk noted in background: parts may have been re‑marked, increasing inspection burden on operators."],"plain_english_summary":"This Airworthiness Directive requires operators of listed Bell UH‑1 and related helicopters with tail rotor grip P/N 205-011-711-101 to clean the grip, test the main body with a magnet, and—if the main body is not steel—replace it with a steel grip before the next flight (effective 3 July 2002). Aircraft owners/operators pay for the inspection and any replacement; the CASA delegate issued the mandatory action, which can ground an aircraft until a compliant steel grip is installed."},"kimi_summary":{"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This AD maintains its original narrow scope: addressing a specific unsafe condition (fraudulent part marking) in specific helicopter models. It has not expanded beyond this safety-critical parts verification purpose."},"complexity_factors":["Very short document (under 300 words)","Only 3 defined applicability criteria (helicopter models, manufacturer, part number)","Single straightforward requirement with simple pass/fail test (magnet test)","No cross-references to other legislation beyond a single note referencing the FAA Emergency AD that prompted this action","No nested conditions or exceptions — clear binary outcome (steel = OK, not steel = replace)","Immediate effective date with single compliance deadline"],"plain_english_summary":"This CASA Airworthiness Directive mandates inspection and replacement of certain Bell UH‑1 (Huey) and related Southwest Florida Aviation tail rotor grips after discovery of fraudulently re‑marked parts made from aluminum instead of required steel. Operators must verify grip material (e.g., magnet test) and replace any non‑steel grips before next flight.\n\nIt affects owners/operators of the listed military‑surplus/restricted‑category helicopters and prevents loss of tail‑rotor control and likely catastrophic crashes from grip failure."}},"importantCases":[],"_links":{"self":"/api/acts/ad-uh-1-17-tail-rotor-grips-2","history":"/api/acts/ad-uh-1-17-tail-rotor-grips-2/history","analysis":"/api/acts/ad-uh-1-17-tail-rotor-grips-2/analysis","conflicts":"/api/acts/ad-uh-1-17-tail-rotor-grips-2/conflicts","importantCases":"/api/acts/ad-uh-1-17-tail-rotor-grips-2/important-cases","documents":"/api/acts/ad-uh-1-17-tail-rotor-grips-2/documents"}}