{"id":"F2006B10456","name":"AD/HS 125/173 - Fuel Boost Pump Wire Bundles","slug":"ad-hs-125-173-fuel-boost-pump-wire-bundles","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":116175,"registerId":"commonwealth-F2006B10456-current","compilationNumber":null,"startDate":"2026-04-03","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"AIRWORTHINESS DIRECTIVE","sectionType":"part","heading":"AIRWORTHINESS DIRECTIVE","content":"# ![](image.001.png)  \nAIRWORTHINESS DIRECTIVE\n\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 CASR 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\n![](image.001.png)  \n\nBritish Aerospace BAe 125 Series Aeroplanes","sortOrder":0},{"sectionNumber":"AD/HS 125/173 Fuel Boost Pump Wire Bundl","sectionType":"part","heading":"AD/HS 125/173 Fuel Boost Pump Wire Bundles 8/2004","content":"# AD/HS 125/173 Fuel Boost Pump Wire Bundles 8/2004\n\nApplicability: Model BAe.125 series 800A, 800A (C-29A) and 800B aeroplanes and Model Hawker 800 aeroplanes, as listed in Raytheon Service Bulletin SB 24-3588, Revision 1, dated September 2003.\n\nRequirement: 1. Perform a one-time detailed inspection for discrepancies of the wire bundles extending from relays 'JT' and 'KT' on Panel 'JA', and the wire bundle entering pressure bung 'DD' in accordance with Part 3.A. of the Accomplishment Instructions of SB 24-3588, Revision 1.\n\nNote 1: For the purposes of this Directive, a detailed inspection is defined as: “An intensive visual examination of a specific structural area, system, installation, or assembly to detect damage, failure, or irregularity. Available lighting is normally supplemented with a direct source of good lighting at intensity deemed appropriate by the inspector. Inspection aids such as mirror, magnifying lenses, etc., may be used. Surface cleaning and elaborate access procedures may be required.”\n\n2. Correct any discrepancies, detected during the Requirement 1 inspection, in accordance with Part 3.A. of the Accomplishment Instructions of SB 24-3588, Revision 1.\n\nInspections and corrective action accomplished before the effective date of this Directive per Raytheon Service Bulletin SB 24-3588, dated February 2003, are considered acceptable for compliance with the corresponding actions specified in this Directive.\n\nNote: FAA AD 2004-12-02 Amdt 39-13661 refers.\n\nCompliance: For Requirement 1 \\- Within 125 flight hours or 90 days after the effective date of this Directive, whichever occurs first.\n\nFor Requirement 2 \\- Before further flight after the Requirement 1 inspection. This Airworthiness Directive becomes effective on 5 August 2004.","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":4,"scope_assessment":{"changed":false,"description":"The Directive enforces the inspection and corrective actions set out in Raytheon Service Bulletin SB 24‑3588 Revision 1 for specified BAe/Hawker 800 models and accepts earlier compliance per the February 2003 SB. The AD applies those manufacturer procedures within a defined compliance period and does not expand or narrow the remedial scope beyond the SB’s stated actions."},"complexity_factors":["Technical inspection standard: the AD adopts a ‘detailed inspection’ definition requiring strong lighting, inspection aids, surface cleaning and possibly elaborate access (Note 1) — increases time, skill and equipment needs.","Dependence on an external service bulletin: required procedures and corrective actions are in Raytheon SB 24‑3588 Revision 1, Part 3.A., so compliance requires access to and reliance on the manufacturer document.","Equivalence/retroactivity check: inspections/repairs done per the earlier Raytheon SB (Feb 2003) are accepted, requiring operators/maintainers to validate earlier work against the Rev 1 standard.","Operational timing pressure: a fixed compliance window of 125 flight hours or 90 days (Requirement 1) forces scheduling choices and may compress maintenance plans.","Immediate operational constraint: detected discrepancies must be corrected before further flight (Requirement 2), potentially grounding aircraft until repairs are complete.","Narrow applicability: applies only to listed BAe 125 / Hawker 800 models as specified in the SB, so fleet-level impact is concentrated but requires precise fleet identification (Applicability).","Regulatory cross-reference: the AD refers to FAA AD 2004‑12‑02, creating an interpretive link to foreign regulatory material."],"plain_english_summary":"This Airworthiness Directive requires owners/operators of specified BAe 125 / Hawker 800 series aeroplanes to carry out a one‑time detailed inspection of fuel boost pump wire bundles (around relays JT and KT on Panel JA and at pressure bung DD) and to repair any faults following Raytheon Service Bulletin SB 24‑3588 Revision 1. Operators must complete the inspection within 125 flight hours or 90 days and pay for any corrective work, which must be done before further flight."},"kimi_summary":{"content_quality":"ok","complexity_score":3,"scope_assessment":{"changed":false,"description":"This Airworthiness Directive maintains its original narrow scope — addressing a specific unsafe wiring condition in specific aircraft models. The document references an updated service bulletin (Revision 1, September 2003) but explicitly grandfathers compliance for those who used the earlier February 2003 version, showing consistent scope with flexible implementation."},"complexity_factors":["Single, specific technical requirement with clear cross-reference to external service bulletin (SB 24-3588)","Only 2 main requirements (inspect, then repair if needed)","One defined term ('detailed inspection') with explicit definition provided","Simple conditional logic: Requirement 2 only triggers if Requirement 1 finds problems","Straightforward compliance timeframe with 'whichever occurs first' alternative","Limited applicability section referencing external document for aircraft list","No nested exceptions or complex cross-references to other legislation","Short document (approximately 300 words) with clear structure"],"plain_english_summary":"This CASA safety order requires owners/operators of listed BAe 125/ Hawker 800-series business jets (as specified in a Raytheon service bulletin) to inspect wiring to the fuel boost pumps—particularly bundles near relays JT/KT and seal DD—for damage and to repair any defects before flight. Inspections are due within 125 flight hours or 90 days; prior compliance using the February 2003 service bulletin satisfies the requirement. This prevents fuel-system failure or fire risk."}},"importantCases":[],"_links":{"self":"/api/acts/ad-hs-125-173-fuel-boost-pump-wire-bundles","history":"/api/acts/ad-hs-125-173-fuel-boost-pump-wire-bundles/history","analysis":"/api/acts/ad-hs-125-173-fuel-boost-pump-wire-bundles/analysis","conflicts":"/api/acts/ad-hs-125-173-fuel-boost-pump-wire-bundles/conflicts","importantCases":"/api/acts/ad-hs-125-173-fuel-boost-pump-wire-bundles/important-cases","documents":"/api/acts/ad-hs-125-173-fuel-boost-pump-wire-bundles/documents"}}