{"id":"F2006B06740","name":"AD/S-76/64 - Aero Aire Air Conditioning System","slug":"ad-s-76-64-aero-aire-air-conditioning-system","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":114567,"registerId":"commonwealth-F2006B06740-current","compilationNumber":null,"startDate":"2026-04-03","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"AIRWORTHINESS DIRECTIVE","sectionType":"part","heading":"AIRWORTHINESS DIRECTIVE","content":"# AIRWORTHINESS DIRECTIVE\n\n![](image.002.png)\n\n![](image.002.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.","sortOrder":0},{"sectionNumber":"AD/S-76/64 Aero Aire Air Conditioning Sy","sectionType":"part","heading":"AD/S-76/64 Aero Aire Air Conditioning System 9/2000","content":"# AD/S-76/64 Aero Aire Air Conditioning System 9/2000\n\nDM\n\nApplicability: Model S-76A helicopters with Aero Aire Air Conditioning System, part number (P/N) S-76A-1-2, modified in accordance with Federal Aviation Administration (FAA) Supplemental Type Certificate SH4680SW without Aero Aire Corporation Service Bulletin (SB) 970002 incorporated.\n\nRequirement: 1\\. Inspect the soft-start control assembly in accordance with the Accomplishment Instruction, Section III, of Aero Aire Corporation SB No. 970001, Revision A, dated 18 September 1997,\n\nNote 1: Neither contact with nor return of the soft-start controller unit to Aero Aire Corporation is required.\n\n2. Install a soft start assembly retrofit kit (kit), P/N 76SB001, in accordance with the Accomplishment Instructions, Section III, of Aero Aire Corporation SB 970002, dated 18 December 1997.\n\nInstallation of this kit is terminating action for the Requirement 1 repetitive inspections.\n\nNote 2: FAA AD 2000-12-09 Amdt 39-11787 and Sikorsky Alert Service Bulletin No. 76-21-4A dated 24 February 1998 refer.\n\nCompliance: For Requirement 1 \\- Within 25 hours time-in-service (TIS) after the effective date of this Directive and thereafter at intervals not to exceed 25 hours TIS.\n\nFor Requirement 2 \\- Within 120 calendar days, after the effective date of this Directive.\n\nThis Airworthiness Directive becomes effective on 26 July 2000.","sortOrder":1}],"analysis":{"kimi_summary":{"content_quality":"ok","complexity_score":3,"scope_assessment":{"changed":false,"description":"This is a standard single-issue Airworthiness Directive addressing a specific unsafe condition in a specific aircraft system. The scope remains tightly focused on the original safety issue without expansion into broader operational or maintenance requirements."},"complexity_factors":["Highly specific technical applicability criteria (part numbers, modification status, service bulletin incorporation status)","Two-tier compliance structure with different deadlines (25 flight hours vs 120 calendar days)","Cross-references to external technical documents (FAA AD 2000-12-09, Sikorsky Alert Service Bulletin 76-21-4A, Aero Aire SB 970001 and 970002)","Conditional terminating action (installation of kit ends inspection requirement)","Regulatory mechanism reference (subregulation 39.1(1) of CAR 1998)"],"plain_english_summary":"This CASA Airworthiness Directive orders urgent safety action for Sikorsky S-76A helicopters equipped with the Aero Aire air‑conditioning soft‑start control assembly (P/N S‑76A‑1‑2) installed under FAA STC SH4680SW when Service Bulletin 970002 has not been applied. \n\nAffected owners/operators must perform recurring inspections and fit a supplied retrofit kit within the compliance window to eliminate the unsafe condition. Compliance is mandatory; non‑compliance grounds the aircraft."},"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":3,"scope_assessment":{"changed":false,"description":"The Directive's scope is narrowly targeted to a defined aircraft model and a specific Aero Aire system configuration and prescribes inspection plus a retrofit terminating action. There is no indication in the text that the applicability or required actions expand beyond that original technical target (Applicability; Requirement)."},"complexity_factors":["Limited applicability: applies only to S‑76A with Aero Aire P/N S‑76A‑1‑2 modified under FAA STC SH4680SW without SB 970002 incorporated (Applicability).","Two discrete actions: repetitive inspections of the soft‑start controller and a terminating retrofit installation (Requirement).","Clear, short compliance deadlines: 25 hours TIS inspection interval; 120 calendar days for retrofit (Compliance).","Refers to external technical documents (Aero Aire SB 970001/970002, FAA AD, Sikorsky ASB) for procedure details, creating dependence on those documents for execution (Requirement; Notes).","Technical but narrow hardware focus (soft‑start control assembly; kit P/N 76SB001) limits procedural ambiguity yet requires parts/installation capability (Requirement)."],"plain_english_summary":"This Airworthiness Directive requires owners/operators of Sikorsky S‑76A helicopters fitted with a specific Aero Aire air‑conditioning system (P/N S‑76A‑1‑2) modified under FAA STC SH4680SW, but without Aero Aire SB 970002, to inspect the soft‑start control every 25 flight hours and to fit a soft‑start retrofit kit (P/N 76SB001) within 120 days; fitting the kit stops the repetitive inspections. The CASA delegate sets the compliance deadlines and operators pay for inspections, parts, installation and associated downtime (Applicability; Requirement; Compliance)."}},"importantCases":[],"_links":{"self":"/api/acts/ad-s-76-64-aero-aire-air-conditioning-system","history":"/api/acts/ad-s-76-64-aero-aire-air-conditioning-system/history","analysis":"/api/acts/ad-s-76-64-aero-aire-air-conditioning-system/analysis","conflicts":"/api/acts/ad-s-76-64-aero-aire-air-conditioning-system/conflicts","importantCases":"/api/acts/ad-s-76-64-aero-aire-air-conditioning-system/important-cases","documents":"/api/acts/ad-s-76-64-aero-aire-air-conditioning-system/documents"}}