{"id":"F2006B03525","name":"AD/BAe 146/78 - Hella Passenger Service Units","slug":"ad-bae-146-78-hella-passenger-service-units","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":43092,"registerId":"commonwealth-F2006B03525-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.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/BAe 146/78 Hella Passenger Service Un","sectionType":"part","heading":"AD/BAe 146/78 Hella Passenger Service Units 7/2000","content":"# AD/BAe 146/78 Hella Passenger Service Units 7/2000\n\nApplicability: Avro 146-RJ70, 146-RJ85 and 146-RJ100 aeroplanes with Hella Passenger Service Units (PSU) introduced by the following modifications:\n\n| HCM30404A | HCM60408D | HCM60415V |\n| --------- | --------- | --------- |\n| HCM40380A | HCM60411D | HCM60422C |\n| HCM30381C | HCM60411N | HCM60422F |\n| HCM40399E | HCM60415D |           |\n\nRequirement: If not previously accomplished, modify the PSUs in accordance with BAe Systems (Operations) Limited, BAe 146 Series/Avro 146-RJ Series Aircraft Modification Service Bulletin SB.25-418-36215A dated 5 April 2000.\n\nNote: This Modification Service Bulletin has been classified as Mandatory by the CAA(UK).\n\nCompliance: Before 31 August 2000.\n\nThis Airworthiness Directive becomes effective on 13 July 2000.\n\nBackground: This Directive requires the replacement and relocation of the PSU support lanyard to prevent the lanyard restricting the operation of the oxygen generator drop down lid.\n\n![Signature of Eugene Paul Holzapfel, Delegate of the Civil Aviation Safety Authority.](image.003.png)  \n\nEugene Paul Holzapfel\n\nDelegate of the Civil Aviation Safety Authority 19 May 2000\n\n![](image.002.png)  \n\nThe above AD is notified in the Commonwealth of Australia Gazette on 14 June 2000.","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"},"kimi_summary":{"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This AD maintains its original narrow scope: addressing a specific mechanical defect in specific aircraft types. It has not expanded beyond its original safety purpose."},"complexity_factors":["Single, specific technical requirement with clear applicability criteria","Only 9 modification numbers listed in a simple table format","One unambiguous compliance deadline (Before 31 August 2000)","No nested exceptions, conditional logic, or cross-references to other legislation","Straightforward background explanation in plain language","Short document (approximately 250 words excluding formatting)"],"plain_english_summary":"This mandatory Australian Airworthiness Directive requires airlines operating Avro 146‑RJ70/85/100 jets fitted with specific Hella passenger service units to modify the PSU lanyard per BAe Systems' bulletin so it cannot obstruct oxygen mask deployment.  \n\nThe fix, required to protect occupants from hypoxia in a decompression, had to be completed by 31 August 2000 (AD issued 19 May 2000; effective 13 July 2000)."},"flash_summary":{"complexity_score":3,"scope_assessment":{"changed":false,"description":"The AD confines action to the PSU modification specified in the BAe service bulletin for the listed Avro 146‑RJ models. It does not broaden affected equipment or aircraft types beyond the applicability list and directs a single corrective modification to address the stated unsafe condition."},"complexity_factors":["Narrow, technical applicability: specific airframe types plus a list of Hella PSU modification codes (applicability section).","Cross-reference to an external mandatory service bulletin (BAe SB.25‑418‑36215A) as the required means of compliance (requirement section).","Task is technical (replace and relocate a lanyard affecting oxygen‑generator deployment) requiring qualified maintenance and parts.","Fixed compliance deadline and effective date create scheduling and operational constraints for operators (compliance and effective date).","Regulatory provenance: issued under CAR 1998 subregulation 39.1(1) and noted as classified Mandatory by the UK CAA (background/note).","Compliance cost and downtime are borne by aircraft operators (implied by mandatory modification and compliance timing)."],"plain_english_summary":"This Airworthiness Directive requires operators of Avro 146‑RJ70, 146‑RJ85 and 146‑RJ100 aircraft fitted with listed Hella Passenger Service Unit (PSU) modifications to carry out a specific PSU modification per BAe Systems Service Bulletin SB.25‑418‑36215A (5 April 2000). The change replaces and relocates the PSU support lanyard so it cannot restrict the oxygen‑generator drop‑down lid. Operators must complete the modification by 31 August 2000; the AD took effect on 13 July 2000."}},"importantCases":[],"_links":{"self":"/api/acts/ad-bae-146-78-hella-passenger-service-units","history":"/api/acts/ad-bae-146-78-hella-passenger-service-units/history","analysis":"/api/acts/ad-bae-146-78-hella-passenger-service-units/analysis","conflicts":"/api/acts/ad-bae-146-78-hella-passenger-service-units/conflicts","importantCases":"/api/acts/ad-bae-146-78-hella-passenger-service-units/important-cases","documents":"/api/acts/ad-bae-146-78-hella-passenger-service-units/documents"}}