{"id":"F2006B02706","name":"AD/B727/181 - Wire Bundle Chafing","slug":"ad-b727-181-wire-bundle-chafing","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":42022,"registerId":"commonwealth-F2006B02706-current","compilationNumber":null,"startDate":"2026-04-01","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 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\n![](image.001.png)\n\nBoeing 727 Series Aeroplanes","sortOrder":0},{"sectionNumber":"AD/B727/181 Wire Bundle Chafing 11/2002","sectionType":"part","heading":"AD/B727/181 Wire Bundle Chafing 11/2002","content":"# AD/B727/181 Wire Bundle Chafing 11/2002\n\nApplicability: Model 727 series aeroplanes.\n\nRequirement: 1. Carry out a general visual inspection to detect discrepancies (including inadequate clearance between the wire bundles and hydraulic tubing and/or structure, missing clamps, chafing, fire damage to structure or damage to wire bundles) of the wire bundles and hydraulic tubing in the aft stairwell area, in accordance with the Work Instructions of Boeing Alert Service Bulletin (ASB) 727-29A0068, dated 30 May 2002. If discrepancies are not found, further action is not required by this Directive.\n\nNote 1: For the purposes of this Directive, a general visual inspection is defined as: \"A visual examination of an interior or exterior area, installation, or assembly to detect obvious damage, failure, or irregularity. This level of inspection is made from within touching distance unless otherwise specified. A mirror may be necessary to enhance visual access to all exposed surfaces in the inspection area. This level of inspection is made under normally available lighting conditions such as daylight, hangar lighting, torch or droplight and may require removal or opening of access panels or doors. Stands, ladders or platforms may be required to gain proximity to the area being checked.\"\n\n2. If any discrepancy is found during the Requirement 1 inspection, rectify the discrepancy (includes repositioning of the wire bundles and clamps to ensure a minimum clearance of 0.25 inch between the wire bundles and hydraulic tubing and/or structure and installing clamps; repairing or replacing any damaged wiring and tubing; if evidence of fire damage, inspecting adjacent structural area for damage, and repairing any damage), per Figure 1 of the ASB.\n\nNote 2: FAA AD 2002-17-05 Amdt 39-12871 refers.\n\nCompliance: For Requirement 1 \\- Within 120 days after the effective date of this Directive. For Requirement 2 \\- Before further flight after the Requirement 1 inspection. This Airworthiness Directive becomes effective on 31 October 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 Directive confines action to Model 727 aeroplanes and to inspection/rectification in the aft stairwell as specified. It does not broaden applicability or impose additional categories of ongoing surveillance beyond the single required inspection and corrective action (Applicability; Requirement 1–2; Compliance)."},"complexity_factors":["Narrow applicability: limited to Boeing 727 series aeroplanes (Applicability).","Single inspection type: a \"general visual inspection\" with a defined scope but some observer judgment required (Note 1).","Prescriptive remedy reference: rectification must follow Boeing Alert Service Bulletin work instructions (Requirement 1–2).","Firm compliance timetable: initial inspection within 120 days and repairs before further flight (Compliance).","Variable repair burden: extent of work ranges from simple repositioning/clamping to wiring/tubing replacement and structural repair if fire damage is found (Requirement 2).","External cross-reference: refers to FAA AD 2002-17-05 (Note 2), which may affect interpretation or supporting data."],"plain_english_summary":"This Airworthiness Directive requires operators of Boeing 727 series aircraft to carry out a general visual inspection of wire bundles and hydraulic tubing in the aft stairwell and to rectify any chafing, inadequate clearance, missing clamps, wiring or fire damage per Boeing Alert Service Bulletin. The inspection must be done within 120 days and any required repairs completed before further flight (Requirement 1–2; Note 1; Compliance). Costs fall on aircraft operators and the CASA delegate enforces the action under CAR 1998 subreg 39.1(1)."},"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 condition (wire bundle chafing) in a specific aircraft type (Boeing 727). ADs are by design limited to particular safety issues and do not expand beyond their original technical purpose."},"complexity_factors":["Single, specific aircraft type (Boeing 727 series) with clear applicability","Two straightforward sequential requirements (inspect, then repair if needed)","One defined term ('general visual inspection') with explicit definition provided","Clear compliance timeline (120 days for inspection, before next flight for repairs)","References external technical document (Boeing Alert Service Bulletin) for detailed instructions rather than reproducing them","No nested exceptions or conditional logic — simple if/then structure","Short document (approximately 300 words of substantive text)"],"plain_english_summary":"Australia’s aviation regulator (CASA) has issued a safety order for Boeing 727 operators requiring inspection of wiring and hydraulic tubing in the aft stairwell within 120 days and mandatory repairs before flight if chafing, missing clamps, clearance issues, or fire damage are found. It targets 727 operators in Australia to reduce the risk of electrical failures and fires from wire-hydraulic contact."}},"importantCases":[],"_links":{"self":"/api/acts/ad-b727-181-wire-bundle-chafing","history":"/api/acts/ad-b727-181-wire-bundle-chafing/history","analysis":"/api/acts/ad-b727-181-wire-bundle-chafing/analysis","conflicts":"/api/acts/ad-b727-181-wire-bundle-chafing/conflicts","importantCases":"/api/acts/ad-b727-181-wire-bundle-chafing/important-cases","documents":"/api/acts/ad-b727-181-wire-bundle-chafing/documents"}}