{"id":"F2007L04532","name":"AD/HS 125/181 - Panel DA Wiring","slug":"ad-hs-125-181-panel-da-wiring","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":71021,"registerId":"commonwealth-F2007L04532-current","compilationNumber":null,"startDate":"2026-04-02","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"British Aerospace BAe 125 Series Aeropla","sectionType":"division","heading":"British Aerospace BAe 125 Series Aeroplanes","content":"### British Aerospace BAe 125 Series Aeroplanes\n\n| AD/HS 125/181 | Panel DA Wiring | 13/2007 |\n| ------------- | --------------- | ------- |\n\n| Applicability: | Hawker Beechcraft Model Hawker 800XP aeroplanes, as identified in Raytheon Service Bulletin SB 24-3772, dated February 2006. |\n| -------------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |\n| Requirement: | 1. Accomplish a detailed inspection of panel DA wiring for clearance and for signs of chafing or exposed conductors, in accordance with the Accomplishment Instructions of SB 24-3772.Note 1: For the purposes of this Directive, a detailed inspection is: ''An intensive examination of a specific item, installation or assembly to detect damage, failure or irregularity. Available lighting is normally supplemented with a direct source of good lighting at an intensity deemed appropriate. Inspection aids such as mirror, magnifying lenses, etc, may be necessary. Surface cleaning and elaborate procedures may be required.'' |\n| | 2. If, as a result of the Requirement 1 inspection, any wire is touching the panel, structure or equipment, or if evidence of chafing or exposed conductors exists, repair or replace the wires and cable ties with new ones, in accordance withSB 24-3772. |\n| | 3. Later revisions of the above SB, approved by the United States Federal Aviation Administration (FAA) as an Alternate Method of Compliance (AMOC) to FAA AD 2007-21-08, are considered acceptable for compliance with the equivalent Requirements of this Directive. |\n| | Note 2: FAA AD 2007-21-08 Amdt 39-15226 refers. |\n| Compliance: | For Requirement 1 - Within 600 hours time in service or 12 months after the effective date of this Directive, whichever occurs first. |\n| | For Requirement 2 - Before further flight after the Requirement 1 inspection. |\n| | This Airworthiness Directive becomes effective on 20 December 2007. |\n| Background: | The FAA has advised of receiving reports of wire bundle interference in the DA panel, chafed wire bundles and exposed conductors. |\n\n| | This Directive requires an inspection of panel DA wiring for clearance and for signs of chafing or exposed conductors and, if necessary repairing or replacing the wires and cable ties. These actions are designed to prevent chafing of wire bundles, which could cause an electrical short and consequent loss of several functions essential for safe flight together with smoke or fire in the flight compartment and main cabin. |\n| --- | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |\n\n![](image.001.png) \nDavid Punshon \nDelegate of the Civil Aviation Safety Authority\n\n25 October 2007","sortOrder":0},{"sectionNumber":"AD/HS 125/181","sectionType":"part","heading":"AD/HS 125/181","content":"## AD/HS 125/181","sortOrder":1},{"sectionNumber":"Panel DA Wiring","sectionType":"part","heading":"Panel DA Wiring","content":"## Panel DA Wiring","sortOrder":2},{"sectionNumber":"13/2007","sectionType":"part","heading":"13/2007","content":"## 13/2007","sortOrder":3}],"analysis":{"kimi_summary":{"content_quality":"ok","complexity_score":3,"scope_assessment":{"changed":false,"description":"This is a standard, targeted airworthiness directive addressing a specific wiring safety issue in a specific aircraft model. The scope remains tightly focused on the original safety concern (panel DA wiring chafing) without expansion into unrelated systems or aircraft types."},"complexity_factors":["Short, single-purpose directive with only 3 requirements","Minimal defined terms (only 'detailed inspection' is explicitly defined via Note 1)","Single cross-reference to FAA AD 2007-21-08 and manufacturer service bulletin SB 24-3772","Clear, sequential compliance structure with simple time-based triggers","No nested exceptions or conditional logic beyond the standard 'if found, then repair' structure","Background and safety rationale clearly stated in plain language"],"plain_english_summary":"This AD mandates owners/operators of Hawker Beechcraft Model Hawker 800XP aircraft listed in SB 24-3772 to inspect wiring behind cockpit Panel DA for chafing or exposed conductors, and to repair or replace any damaged wiring before further flight. It responds to reported wire wear that could cause instrument loss, smoke, or fire. Inspections are required within 600 flight hours or 12 months from 20 December 2007."},"flash_summary":{"complexity_score":3,"scope_assessment":{"changed":false,"description":"The directive stays within the original safety purpose: detect and correct chafed or exposed wiring in panel DA to prevent electrical shorts, loss of functions, or smoke/fire. It does not broaden the subject matter beyond inspection and repair of that wiring. Allowing FAA‑approved later revisions of the service bulletin as AMOCs (Requirement 3) slightly broadens acceptable compliance methods but does not change the substantive safety scope."},"complexity_factors":["Short, single-issue Airworthiness Directive (one inspection + conditional repair requirement)","1 defined inspection standard (Note 1) that raises a practical quality threshold","Cross-reference to Raytheon Service Bulletin SB 24-3772 (technical instructions external to the AD)","Cross-reference to FAA AD 2007-21-08 and acceptance of FAA-approved AMOCs (Requirement 3)","Two-tier timing conditions: (a) 600 hours OR 12 months for inspection, (b) \"before further flight\" for repairs"],"plain_english_summary":"**What this directive does (short):**\n\n- Requires a specific inspection of the DA instrument/avionics panel wiring on certain Hawker Beechcraft Model Hawker 800XP aeroplanes and requires repair or replacement of any wiring or cable ties that are chafed, rubbing, or have exposed conductors. (This is an Airworthiness Directive from the Civil Aviation Safety Authority.)\n\n**Who is affected:**\n\n- Operators and owners of Hawker Beechcraft Model Hawker 800XP aircraft that are identified in Raytheon Service Bulletin SB 24-3772 (dated February 2006).\n\n**Why it matters:**\n\n- The stated safety concern is that wire bundles in panel DA have been reported to chafe and develop exposed conductors. Chafed wiring can short, potentially causing loss of multiple flight-essential functions and/or smoke or fire in the flight compartment and main cabin. The directive is intended to identify and fix these wiring problems before they cause such failures. (Background and purpose as described in the directive.)\n\n**Exactly what is required (mechanics):**\n\n1. Do a \"detailed inspection\" of the panel DA wiring for clearance and for signs of chafing or exposed conductors, following the Accomplishment Instructions of Raytheon Service Bulletin SB 24-3772 (Requirement 1). Note: the directive defines a \"detailed inspection\" as an intensive, well‑lit, possibly aided inspection that may require cleaning or magnification (Note 1).\n\n2. If any wire is found touching the panel, structure or equipment, or if any chafing or exposed conductor is found, repair or replace the wires and cable ties with new parts in accordance with SB 24-3772 (Requirement 2). Repairs/replacements must be done before further flight after the inspection.\n\n3. Later revisions of SB 24-3772 that the U.S. Federal Aviation Administration (FAA) has approved as an Alternate Method of Compliance (AMOC) to FAA AD 2007-21-08 are acceptable for meeting the equivalent requirements of this directive (Requirement 3).\n\n**Timing and compliance:**\n\n- The inspection (Requirement 1) must be done within 600 hours time in service or within 12 months after the directive’s effective date (whichever comes first).\n- Any required repairs or replacements (Requirement 2) must be completed before the aircraft flies again.\n- The directive became effective 20 December 2007.\n\n**Who decides and who pays:**\n\n- The aircraft operator (or its maintenance organisation) must arrange and carry out the inspection and any repairs (operator responsibility). A licensed maintenance organisation or appropriately certificated personnel will perform the work per the service bulletin.\n- Costs are borne by aircraft owners and operators: labour time for inspection, any replacement wiring or cable ties, and aircraft downtime while work is performed.\n- The regulator (Civil Aviation Safety Authority) enforces compliance; the directive accepts certain FAA‑approved alternate compliance methods (AMOCs) as allowed variations.\n\n**Implementation trade-offs, incentives and risks:**\n\n- Compliance imposes direct, observable costs on operators: inspection labour, parts, and aircraft downtime. Operators may prefer an FAA‑approved AMOC or later SB revision if it reduces cost or downtime (Requirement 3 permits this where FAA has approved it).\n- The directive concentrates a clear safety benefit on aircraft occupants and operators of the affected model by reducing the risk of electrical shorts and in‑flight smoke/fire; the costs are distributed to the affected fleet owners/operators.\n- Successful implementation depends on inspection quality: a \"detailed inspection\" standard requires adequate lighting, inspection aids, and possibly surface cleaning; inadequate inspection could leave hazards uncorrected. The directive’s language sets the inspection standard (Note 1) but relies on maintenance practice for execution.\n- The rule does not change aircraft design or operations beyond requiring inspection and repair; it allows use of alternative, regulator‑approved methods (AMOCs) which can reduce rigid compliance costs if approved.\n\n**Source mechanics cited:**\n- The action items above come from the directive's Requirement 1, Requirement 2 and Requirement 3 and the defined inspection standard in Note 1. The compliance time limits come from the Compliance section. The directive references Raytheon SB 24-3772 and FAA AD 2007-21-08 as the technical and regulatory cross‑references.\n\n"},"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"}},"importantCases":[],"_links":{"self":"/api/acts/ad-hs-125-181-panel-da-wiring","history":"/api/acts/ad-hs-125-181-panel-da-wiring/history","analysis":"/api/acts/ad-hs-125-181-panel-da-wiring/analysis","conflicts":"/api/acts/ad-hs-125-181-panel-da-wiring/conflicts","importantCases":"/api/acts/ad-hs-125-181-panel-da-wiring/important-cases","documents":"/api/acts/ad-hs-125-181-panel-da-wiring/documents"}}