{"id":"F2006B10230","name":"AD/GAZELLE/11 - Freewheel Flange Bearings - Inspection","slug":"ad-gazelle-11-freewheel-flange-bearings-inspection","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":55888,"registerId":"commonwealth-F2006B10230-current","compilationNumber":null,"startDate":"2026-04-02","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/GAZELLE/11 - Freewheel Flange Bearings - Inspection","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)  \nEurocopter SA341 and SA342 (Gazelle) Series Helicopters\n\nAD/GAZELLE/11 Freewheel Flange Bearings \\- Inspection 8/82\n\nApplicability: SA341 and SA342 series helicopters fitted with freewheel flange assembly 341A35.0110.00, 341A35.0110.01 (prior to mod. AMS 341A07.9536) or\n\n341A35.0110.02 (post mod. AMS 341A07.9536).\n\nDocument: Gazelle SB 05.20.\n\nCompliance: 1. Inspect in accordance with paragraph 1C(1)(a) of the document during each pre- flight inspection after 12 July 1982.\n\n2. Inspect in accordance with paragraph 1C(1)(b) of the document at intervals not exceeding 300 hours time in service.\n\nNote: The pre-flight inspection shall be entered on the maintenance release as maintenance required. This inspection may be performed by the pilot in command, in which case certification is not required. In all other cases certification may be made on the maintenance release. This inspection may also be performed and certified by any Licensed Aircraft Maintenance Engineer.\n\nBackground: The inspection is introduced to detect degradation of the freewheel flange bearing.","sortOrder":0}],"analysis":{"flash_summary":{"complexity_score":3,"scope_assessment":{"changed":false,"description":"No indication the AD expands or narrows scope beyond its stated purpose. It applies to SA341/SA342 helicopters fitted with the listed freewheel flange parts (Applicability) and imposes inspections to detect bearing degradation (Background), without adding unrelated obligations."},"complexity_factors":["Applicability: multiple specific part numbers and mod status narrow which helicopters are affected (Applicability)","Two distinct inspection regimes with different frequencies and triggers (pre‑flight after a date; recurrent 300 hours) (Compliance 1–2)","Requirement to follow an external service bulletin rather than reproducing procedures in the AD (Document: Gazelle SB 05.20)","Certification options vary by actor: pilot may perform pre‑flight without certification; other inspections require certification on the maintenance release or by a Licensed AME (Note)","Mandatory maintenance release entry requirement creates administrative compliance task for operators (Note)","Temporal compliance trigger references a historical calendar date, which can create ambiguity for record interpretation in long‑running fleets (Compliance 1)","Narrow technical focus (single component) reduces substantive scope but concentrates operational risk on owners/operators of affected helicopters (Applicability; Background)"],"plain_english_summary":"Specifies mandatory inspections of the freewheel flange bearing on Eurocopter SA341/SA342 helicopters fitted with specified freewheel flange parts (pre- and post-mod AMS 341A07.9536). Requires a pre‑flight inspection after 12 July 1982 and a repeat inspection at intervals not exceeding 300 flight hours, using Gazelle SB 05.20. Owners/operators, pilots and Licensed Aircraft Maintenance Engineers must perform or certify the checks and record them on the maintenance release. Purpose stated: detect degradation of the freewheel flange bearing."},"kimi_summary":{"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This is a discrete, single-issue airworthiness directive focused specifically on freewheel flange bearing inspections. It has not expanded beyond its original safety purpose."},"complexity_factors":["Very short document (under 300 words)","Only 3 defined part numbers for applicability","Simple two-tier compliance structure (pre-flight + periodic)","Single cross-reference to manufacturer service bulletin (Gazelle SB 05.20)","No nested conditions or exceptions","Straightforward background with single stated purpose"],"plain_english_summary":"This CASA Airworthiness Directive mandates regular inspections of the freewheel flange bearing on certain Eurocopter Gazelle (SA341/SA342) helicopters to prevent bearing degradation that could jeopardize autorotation. It affects owners/operators, pilots (pre‑flight visual checks), and maintenance engineers (detailed inspections every 300 flight hours). The requirement addresses safety concerns about this bearing’s design and aims to prevent in‑flight failure."}},"importantCases":[],"_links":{"self":"/api/acts/ad-gazelle-11-freewheel-flange-bearings-inspection","history":"/api/acts/ad-gazelle-11-freewheel-flange-bearings-inspection/history","analysis":"/api/acts/ad-gazelle-11-freewheel-flange-bearings-inspection/analysis","conflicts":"/api/acts/ad-gazelle-11-freewheel-flange-bearings-inspection/conflicts","importantCases":"/api/acts/ad-gazelle-11-freewheel-flange-bearings-inspection/important-cases","documents":"/api/acts/ad-gazelle-11-freewheel-flange-bearings-inspection/documents"}}