{"id":"F2006B02690","name":"AD/B727/167 - Forward Entry Doorway","slug":"ad-b727-167-forward-entry-doorway","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":42006,"registerId":"commonwealth-F2006B02690-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/B727/167 Forward Entry Doorway 6/2000","sectionType":"part","heading":"AD/B727/167 Forward Entry Doorway 6/2000","content":"# AD/B727/167 Forward Entry Doorway 6/2000\n\nApplicability: All Model 727 series aircraft.\n\nRequirement: Inspect in accordance with the technical requirements of FAA AD 2000-05-19 Amdt 39-11629.\n\nNote: Boeing Service Bulletin 727-53-0186 Revision 1 refers.\n\nCompliance: As specified in the Requirement document with a revised effective date of 15 June 2000.\n\nThis Airworthiness Directive becomes effective on 15 June 2000.\n\nBackground: The FAA received reports of fatigue cracking in the fuselage skin and bonded doublers in the corners above the forward entry doorway. The one-time inspection and follow-on actions and modification are intended to prevent cracking of the fuselage skin and bonded doubler, which could result in reduced structural integrity and consequent loss of cabin pressurisation.\n\n![Signature of Bernard Malcolm Hole, Delegate of the Civil Aviation Safety Authority.](image.003.png)  \n\nBernard Malcolm Hole\n\nDelegate of the Civil Aviation Safety Authority 5 May 2000\n\n![](image.002.png)  \n\nThe above AD is notified in the Commonwealth of Australia Gazette on 17 May 2000.","sortOrder":1}],"analysis":{"flash_summary_failed":{"failed":true,"reason":"Unauthenticated. Configure AI_GATEWAY_API_KEY or use a provider module. Learn more: https://ai-sdk.dev/unauthenticated-ai-gateway","source":"analysis-cron"},"flash_summary":{"complexity_score":3,"scope_assessment":{"changed":false,"description":"The AD is narrow and consistent with its stated purpose: to detect and correct fatigue cracking at the forward entry doorway on Boeing 727 series aircraft. It adopts the FAA's technical requirements and a Boeing service bulletin but does not broaden obligations beyond inspection, follow‑on repairs and modification to address that specific unsafe condition."},"complexity_factors":["Short, single‑issue AD limited to Model 727 series aircraft","Direct cross‑reference to an external FAA AD (FAA AD 2000-05-19) for technical instructions","Reference to Boeing Service Bulletin 727-53-0186 Revision 1 (external document)","No internal detailed procedures or measurement criteria in the AD itself (defers to external documents)","Clear effective date and statutory basis (subregulation 39.1(1) of CAR 1998)","Minimal conditional logic or nested exceptions"],"plain_english_summary":"**What this instrument does (mechanically)**\n\n- Requires all Boeing Model 727 series aircraft to have the forward entry doorway area inspected and any follow‑on actions or modifications performed. (Applicability; Requirement)\n- The inspections and corrective actions must be carried out in accordance with the technical instructions in FAA Airworthiness Directive 2000-05-19 (as amended) and with reference to Boeing Service Bulletin 727-53-0186 Revision 1. (Requirement; Note)\n- The directive is mandatory under the Civil Aviation Regulations (issued under subregulation 39.1(1) of CAR 1998) and takes effect 15 June 2000. (front matter; Compliance; Effective date)\n\n**Why it was made (stated reason)**\n\n- The FAA reported fatigue cracking in the fuselage skin and in bonded doublers at the corners above the forward entry doorway. (Background)\n- The required one‑time inspection, any follow‑on repairs, and the modification are intended to prevent such cracking, which could reduce structural integrity and potentially cause loss of cabin pressurisation. (Background)\n\n**Who it affects**\n\n- Aircraft owners and operators of all Model 727 series aircraft (they must comply with the inspection and corrective actions). (Applicability)\n- Maintenance organisations and engineers who carry out the inspections and any repairs/modifications (they must follow the FAA AD and Boeing service bulletin). (Requirement; Note)\n- The Civil Aviation Safety Authority (CASA) enforces compliance; the AD was issued by a CASA delegate under CAR 1998. (front matter)\n\n**Practical effects and how it works**\n\n- The AD does not itself provide the inspection procedure or detailed repair steps; it adopts and makes obligatory the FAA AD and the Boeing service bulletin, so operators must obtain and follow those external documents. (Requirement; Note)\n- Operators will schedule the one‑time inspection within the timing in the FAA AD and then perform any repairs or modifications specified there if cracking or other defects are found. (Requirement; Compliance)\n- Compliance is mandatory and enforceable under CAR 1998; failure to comply can expose operators to regulatory enforcement. (front matter)\n\n**Costs, incentives and trade‑offs**\n\n- Who pays: the aircraft owner/operator pays for the inspection, any follow‑on repairs, and any required modification work, including labour, parts and aircraft downtime. (Requirement; Background)\n- Incentives: operators face a trade‑off between bearing the immediate cost of inspection/repair and the risk of structural failure or regulatory non‑compliance. The AD can push operators towards performing the work, retiring the aircraft, or altering operating patterns if the repair cost or downtime is high. (Background)\n- Compliance burden: the AD is a one‑time inspection plus any corrective actions; the practical burden depends on the inspection scope in the FAA AD and the extent of any needed repairs/modifications. (Requirement; Note)\n- Market effects: concentrated costs fall on owners of 727s (an ageing aircraft type). Those costs can affect the secondary market value of affected aircraft and decisions by operators about continued use versus replacement. (Background)\n\n**Implementation risks and administrative features**\n\n- CASA has adopted foreign technical material (FAA AD and Boeing service bulletin). Operators must interpret and apply those external documents; ambiguity or differences between them can create implementation risk. (Requirement; Note)\n- Availability of spare parts, approved repair facilities and qualified maintenance personnel will affect how quickly and cheaply operators can comply. (Requirement)\n- The AD is narrowly targeted at a specific structural location (forward entry doorway); it does not expand obligations beyond the inspection and corrective actions described in the referenced FAA AD and Boeing service bulletin. (Applicability; Requirement)\n\n**Who decides what work is done and when**\n\n- CASA (via the delegate) decides the legal requirement by issuing the AD. (front matter)\n- The FAA AD and Boeing service bulletin determine the technical content (procedures, intervals, corrective actions). The aircraft operator schedules and pays for the work and engages maintenance organisations to perform it. (Requirement; Note)\n\n(References in parentheses indicate the relevant parts of the AD: Applicability; Requirement; Note; Compliance; Background; front matter.)"},"kimi_summary":{"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This is a standard airworthiness directive with narrow, specific scope — addressing a known safety defect in a particular aircraft type. It has not expanded beyond its original purpose of mandating inspection for fatigue cracking near the forward entry doorway."},"complexity_factors":["Very short document (under 300 words)","Only 1 defined term implicitly referenced (the FAA AD number)","No nested conditional logic — single straightforward requirement","No cross-references to other Australian legislation beyond the enabling regulation (CAR 1998 subreg 39.1(1))","Single applicability criterion (all Model 727 series)","Adopts external technical standard by reference rather than reproducing it"],"plain_english_summary":"This CASA safety order requires all Australian operators and owners of Boeing 727 series aircraft to carry out a one‑time inspection of the fuselage skin and reinforcing plates around the forward passenger door for metal fatigue and cracking, and to perform any required repairs per FAA AD 2000‑05‑19.  \n\nIt matters because undetected cracks can weaken structure, risk sudden cabin decompression, and potentially cause catastrophic failure; the directive adopts the FAA’s mandated actions rather than creating separate Australian rules."}},"importantCases":[],"_links":{"self":"/api/acts/ad-b727-167-forward-entry-doorway","history":"/api/acts/ad-b727-167-forward-entry-doorway/history","analysis":"/api/acts/ad-b727-167-forward-entry-doorway/analysis","conflicts":"/api/acts/ad-b727-167-forward-entry-doorway/conflicts","importantCases":"/api/acts/ad-b727-167-forward-entry-doorway/important-cases","documents":"/api/acts/ad-b727-167-forward-entry-doorway/documents"}}