{"id":"F2006B01989","name":"AD/A330/1 - Pitot Probes","slug":"ad-a330-1-pitot-probes","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":41211,"registerId":"commonwealth-F2006B01989-current","compilationNumber":null,"startDate":"2026-04-01","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\nAirbus Industrie A330 Series Aeroplanes","sortOrder":0},{"sectionNumber":"AD/A330/1 Pitot Probes 12/2002","sectionType":"part","heading":"AD/A330/1 Pitot Probes 12/2002","content":"# AD/A330/1 Pitot Probes 12/2002\n\nApplicability: A330-301, \\-321, \\-322, \\-341 and \\-342 series aeroplanes, all serial numbers without either Airbus Industrie modification 44836 or 45638 embodied during production or Airbus Industrie Service Bulletins (SB) A330-34-3038 or A330-34-3071 embodied whilst in service.\n\nRequirement: Remove Rosemount pitot probes part number (P/N) 0851GR and replace them with either BFGoodrich Aerospace P/N 0851HL probes in accordance with SB A330-34- 3038, or by Sextant P/N C16195AA probes in accordance with SB A330-34-3071.\n\nNote: DGAC AD 2001-354(B) refers.\n\nCompliance: Before 31 December 2003.\n\nThis Airworthiness Directive becomes effective on 28 November 2002.\n\nBackground: The French Direction Générale de l’Aviation Civile has advised that operators have reported loss or fluctuation of airspeed when flying through extreme meteorological conditions. Further to an investigation, the presence of ice crystals and/or water exceeding the current limits of the initial specification of Rosemount pitot probes P/N 0851GR is considered the most probable cause of these airspeed discrepancies.\n\nThis Directive requires the installation of pitot probes meeting more stringent qualification requirements.\n\n![](image.002.png)  \n\nBarry James Reid McKay\n\nDelegate of the Civil Aviation Safety Authority 17 October 2002\n\n![](image.001.png)  \n\nThe above AD is notified in the Commonwealth of Australia Gazette on 6 November 2002.","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":3,"scope_assessment":{"changed":false,"description":"The AD targets replacement of Rosemount P/N 0851GR pitot probes on specified A330 variants that do not already have Airbus mods 44836/45638 or the listed service bulletins embodied. The text confines action to that identified unsafe condition and does not broaden applicability beyond those aircraft or prescribe additional unrelated modifications (Applicability; Requirement; Background)."},"complexity_factors":["Single, discrete technical action (remove and replace a specific pitot probe part) — low procedural complexity (Requirement).","Applicability tied to aircraft models and to whether certain production modifications or service bulletins are already embodied, requiring operators to check configuration histories (Applicability).","Mandatory embodiment must follow one of two specified service bulletins, creating a compliance link to maintenance instructions rather than free-form repair (Requirement).","Fixed compliance deadline may create scheduling and parts‑supply pressure for operators and MROs (Compliance: Before 31 December 2003).","Safety rationale is specific: ice‑crystal/water ingestion exceeding initial probe limits produced airspeed anomalies, so the directive prescribes probes meeting stricter qualifications (Background).","Regulatory force is conferred by the CASA delegate under subregulation 39.1(1) of CAR 1998, so non‑compliance has regulatory consequences (opening paragraph).","Multiple approved replacement part numbers provide procurement options but require correct embodiment per the referenced SBs, implicating parts compatibility and installation validation (Requirement)."],"plain_english_summary":"This Directive requires operators of certain Airbus A330 models without Airbus modifications 44836/45638 or without service bulletins A330‑34‑3038/3071 to remove Rosemount pitot probes P/N 0851GR and fit approved replacements (BFGoodrich P/N 0851HL or Sextant P/N C16195AA) per the applicable service bulletin (Requirement; Applicability). Work must be done by 31 December 2003 to address reported airspeed loss linked to ice‑crystal/water ingestion; operators pay for parts and maintenance and must follow the service bulletin instructions (Background; Compliance)."},"kimi_summary":{"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This is a discrete safety directive addressing a specific equipment defect. It has not expanded beyond its original purpose of mandating pitot probe replacement on affected A330 aircraft."},"complexity_factors":["Single, specific technical requirement with clear part numbers and replacement options","Limited applicability scope (5 specific aircraft variants, defined by serial numbers and modification status)","No nested exceptions or conditional logic beyond the initial applicability test","Straightforward compliance deadline with no phased or graduated requirements","Only 2 cross-references (to French aviation authority AD and manufacturer service bulletins)","No defined terms section — technical terms are either self-explanatory or standard aviation nomenclature"],"plain_english_summary":"Australia’s aviation regulator (CASA) requires owners/operators of certain Airbus A330-301/321/322/341/342 aircraft (unless already modified) to replace Rosemount pitot probes (P/N 0851GR) with approved BFGoodrich or Sextant models per manufacturers’ service bulletins. The replacement must be done before 31 December 2003. The order prevents dangerous false airspeed indications in ice-crystal conditions by mandating more robust probe equipment."}},"importantCases":[],"_links":{"self":"/api/acts/ad-a330-1-pitot-probes","history":"/api/acts/ad-a330-1-pitot-probes/history","analysis":"/api/acts/ad-a330-1-pitot-probes/analysis","conflicts":"/api/acts/ad-a330-1-pitot-probes/conflicts","importantCases":"/api/acts/ad-a330-1-pitot-probes/important-cases","documents":"/api/acts/ad-a330-1-pitot-probes/documents"}}