{"id":"F2008L02568","name":"AD/B727/212 - Flight Deck Windows No.2, No.4, and No.5","slug":"ad-b727-212-flight-deck-windows-no-2-no-4-and-no-5","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":74573,"registerId":"commonwealth-F2008L02568-current","compilationNumber":null,"startDate":"2026-04-02","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"Boeing 727 Series Aeroplanes","sectionType":"division","heading":"Boeing 727 Series Aeroplanes","content":"### Boeing 727 Series Aeroplanes\n\n| AD/B727/212 | Flight Deck Windows No.2, No.4, and No.5 | 8/2008 |\n| ----------- | ---------------------------------------- | ------ |\n\n| Applicability: | Model 727, 727C, 727-100, 727-100C, 727-200, and 727-200F series aircraft.                                                                                                                                                                                                                                                                                                         |\n| -------------- | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |\n| Requirement:   | Action in accordance with the requirements of FAA AD 2008-11-09 Amdt 39-15531.Note: Boeing Alert Service Bulletin 727-56A0019, dated 6 June 2007, or later FAA approved revision, refers.                                                                                                                                                                                          |\n| Compliance:    | As specified in the Requirement document, with a revised effective date of31 July 2008.                                                                                                                                                                                                                                                                                            |\n|                | This Airworthiness Directive becomes effective on 31 July 2008.                                                                                                                                                                                                                                                                                                                    |\n| Background:    | The FAA received reports of in-flight departure and separation of certain flight deck windows. This Directive requires inspections to detect and correct cracking in the vinyl interlayer or damage to the structural inner glass panes of flight deck windows No. 2, No. 4, and No.5. Such cracking and damage could result in loss of a window and rapid loss of cabin pressure. |\n\n![](image.001.png)  \nDavid Villiers  \nDelegate of the Civil Aviation Safety Authority\n\n19 June 2008","sortOrder":0},{"sectionNumber":"AD/B727/212","sectionType":"part","heading":"AD/B727/212","content":"## AD/B727/212","sortOrder":1},{"sectionNumber":"Flight Deck Windows No.2, No.4, and No.5","sectionType":"part","heading":"Flight Deck Windows No.2, No.4, and No.5","content":"## Flight Deck Windows No.2, No.4, and No.5","sortOrder":2},{"sectionNumber":"8/2008","sectionType":"part","heading":"8/2008","content":"## 8/2008","sortOrder":3}],"analysis":{"flash_summary":{"complexity_score":3,"scope_assessment":{"changed":false,"description":"The Directive does not expand the set of affected aircraft or add new kinds of obligations beyond those in the referenced FAA AD and Boeing service bulletin. It specifies mandatory inspections and corrective action for the listed Boeing 727 series and sets a revised effective date of 31 July 2008 (Compliance)."},"complexity_factors":["Relies on external normative documents (FAA AD 2008-11-09 and Boeing Alert Service Bulletin 727-56A0019) for technical and procedural detail — (Requirement).","Technical inspections target laminated window components (vinyl interlayer and inner glass), requiring specialised inspection skills and possible parts replacement — (Background / Requirement).","Applies across multiple Boeing 727 variants, so operators must determine applicability per airframe and window configuration — (Applicability).","Compliance deadline and revised effective date create time pressure and scheduling impacts for operators and maintenance facilities — (Compliance).","Costs and operational downtime for inspections and repairs are borne by aircraft owners/operators (implied by mandatory inspections and corrective actions) — (Requirement / Compliance).","Regulatory enforcement is via CASA (delegate noted as issuer), but substantive discretion on method/timing is constrained by the referenced FAA AD and Boeing service bulletin — (Document header / Requirement).","Cross-referencing increases administrative burden: operators must obtain and follow external FAA and Boeing documents rather than relying solely on this AD text — (Requirement)."],"plain_english_summary":"This Airworthiness Directive requires operators of Boeing 727-series aircraft to inspect flight‑deck windows No.2, No.4 and No.5 for cracking in the vinyl interlayer or damage to the inner glass, and to repair or replace affected windows following FAA AD 2008-11-09 and Boeing Alert Service Bulletin 727-56A0019. Compliance is mandatory for the listed 727 models, effective 31 July 2008, to address reports of in‑flight window separation that could cause rapid cabin decompression."},"kimi_summary":{"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This is a standard, narrow safety directive focused specifically on cockpit window integrity for one aircraft type. It has not expanded beyond its original purpose of addressing a specific airworthiness concern."},"complexity_factors":["Very short document (under 300 words)","Only 1 substantive requirement (inspect and repair windows)","No defined terms section","No conditional logic or nested exceptions","Single cross-reference to external FAA document and Boeing service bulletin","Straightforward applicability table with 6 aircraft models listed"],"plain_english_summary":"This CASA Airworthiness Directive requires operators of Boeing 727 (passenger and cargo) in Australia to inspect cockpit windows 2, 4 and 5 for vinyl-layer cracking and inner-glass damage, and to repair any defects, following the FAA AD 2008-11-09 and Boeing service bulletin.  \n\nIt’s mandatory because cracked or separating windows can cause in-flight rapid decompression; inspections must be completed by 31 July 2008."},"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-b727-212-flight-deck-windows-no-2-no-4-and-no-5","history":"/api/acts/ad-b727-212-flight-deck-windows-no-2-no-4-and-no-5/history","analysis":"/api/acts/ad-b727-212-flight-deck-windows-no-2-no-4-and-no-5/analysis","conflicts":"/api/acts/ad-b727-212-flight-deck-windows-no-2-no-4-and-no-5/conflicts","importantCases":"/api/acts/ad-b727-212-flight-deck-windows-no-2-no-4-and-no-5/important-cases","documents":"/api/acts/ad-b727-212-flight-deck-windows-no-2-no-4-and-no-5/documents"}}