{"id":"F2012L00819","name":"AD/B737/334 Amdt 1 - Flight Deck Windows No. 2, No. 4, and No. 5","slug":"ad-b737-334-amdt-1-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":89134,"registerId":"commonwealth-F2012L00819-current","compilationNumber":null,"startDate":"2026-04-02","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"Boeing 737 Series Aeroplanes","sectionType":"division","heading":"Boeing 737 Series Aeroplanes","content":"### Boeing 737 Series Aeroplanes\n\n| AD/B737/334 Amdt 1 | Flight Deck Windows No.2, No.4, and No.5 | 7/2012 |\n| ------------------ | ---------------------------------------- | ------ |\n\n| Applicability: | Model 737-600, -700, -700C, -800, -900, and -900ER series aircraft.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             |\n| -------------- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |\n| Requirement:   | Action in accordance with the technical requirements of FAA AD 2008-11-08Amdt 39-15530.Boeing Alert Service Bulletin 737-56A1022 Rev 1 dated 12 March 2010 approved by the United States Federal Aviation Administration (FAA) as an Alternative Method of Compliance (AMOC) to FAA AD 2008-11-08 Amendment 39-15530 is considered acceptable for compliance with the Requirements of this AD.                                                                                                                                                                                                  |\n| Compliance:    | As specified in the Requirement document, with a revised effective date of16 April 2012                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         |\n|                | This Amendment becomes effective on 16 April 2012.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              |\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.Amendment 1 notates the acceptability of an FAA approved AMOC for compliance with the equivalent requirements of this AD.The original issue of this Airworthiness Directive became effective on 31 July 2008. |\n\n![](image.001.png)\n\nCharles Lenarcic  \nDelegate of the Civil Aviation Safety Authority\n\n5 April 2012","sortOrder":0},{"sectionNumber":"AD/B737/334 Amdt 1","sectionType":"part","heading":"AD/B737/334 Amdt 1","content":"## AD/B737/334 Amdt 1","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":"7/2012","sectionType":"part","heading":"7/2012","content":"## 7/2012","sortOrder":3}],"analysis":{"flash_summary":{"complexity_score":5,"scope_assessment":{"changed":true,"description":"Amendment 1 (effective 16 April 2012) does not expand the set of affected aircraft or the safety objective but explicitly records that an FAA‑approved Alternative Method of Compliance (AMOC) — namely Boeing Alert Service Bulletin 737-56A1022 Rev 1 as approved by the FAA — is acceptable for compliance. In short, the compliance options were broadened to include the FAA‑approved AMOC; the inspection requirement and applicability otherwise remain as in the original AD (original effective 31 July 2008)."},"complexity_factors":["Cross-reference to foreign regulator documents: requires action in accordance with FAA AD 2008-11-08 and Boeing Alert Service Bulletin 737-56A1022 Rev 1 (source of technical steps), creating dependency on non‑domestic documents.","Acceptance of FAA-approved AMOC: Amendment 1 explicitly permits an FAA Alternative Method of Compliance, adding regulatory flexibility but requiring operators to obtain/justify use of the AMOC.","Technical specificity is delegated: the AD refers to external technical instructions rather than reproducing detailed inspection intervals, methods or repair criteria in the instrument itself.","Targeted applicability: applies only to specific Boeing 737 variants (‑600/‑700/‑700C/‑800/‑900/‑900ER), narrowing scope but requiring fleet-level identification and tracking by operators.","Compliance timing and procedures are set in the referenced documents (not the AD), so administrators and maintainers must consult multiple sources to determine exact deadlines and workscopes.","Compliance cost and operational impact uncertainty: the AD mandates inspections/repairs but does not state cost, man‑hours, or grounding risk within the text, leaving practical burdens to be assessed by operators."],"plain_english_summary":"This Airworthiness Directive requires operators of Boeing 737-600/700/700C/800/900/900ER 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 panes, and to repair or replace affected windows. The directive accepts compliance by following the specified FAA AD and an FAA‑approved Boeing service bulletin or an FAA-approved AMOC. Aircraft operators pay for inspections and any repairs; CASA has endorsed FAA‑approved alternative methods of compliance."},"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"},"kimi_summary":{"content_quality":"ok","complexity_score":3,"scope_assessment":{"changed":false,"description":"This amendment maintains the original scope of the 2008 Airworthiness Directive. It does not expand applicability to new aircraft models or introduce new safety hazards. The amendment solely updates the compliance pathway by recognising an FAA-approved alternative method, which is a standard administrative update for ADs."},"complexity_factors":["Short, single-purpose instrument (approximately 250 words of substantive content)","Only 6 defined aircraft model variants in applicability section","Single cross-reference to foreign legislation (FAA AD 2008-11-08) with one approved alternative (Boeing Service Bulletin)","No nested exceptions or conditional logic — compliance is mandatory with clear effective date","Minimal legislative machinery: no interpretation section, no penalty clauses, no review mechanisms","Technical aviation terminology used but standard for the industry (vinyl interlayer, AMOC, flight deck windows)"],"plain_english_summary":"This Airworthiness Directive mandates inspection and repair of cracking or inner-glass damage in flight deck windows (Nos. 2, 4, 5) on Boeing 737‑600/700/700C/800/900/900ER aircraft to prevent windows separating in flight and causing rapid cabin decompression.  \n\nIt affects Australian operators and maintenance organisations; compliance follows FAA AD 2008‑11‑08 or Boeing Alert Service Bulletin 737‑56A1022 Rev 1. Amendment 1 (effective 16 Apr 2012) formally recognises an FAA‑approved alternative method of compliance."}},"importantCases":[],"_links":{"self":"/api/acts/ad-b737-334-amdt-1-flight-deck-windows-no-2-no-4-and-no-5","history":"/api/acts/ad-b737-334-amdt-1-flight-deck-windows-no-2-no-4-and-no-5/history","analysis":"/api/acts/ad-b737-334-amdt-1-flight-deck-windows-no-2-no-4-and-no-5/analysis","conflicts":"/api/acts/ad-b737-334-amdt-1-flight-deck-windows-no-2-no-4-and-no-5/conflicts","importantCases":"/api/acts/ad-b737-334-amdt-1-flight-deck-windows-no-2-no-4-and-no-5/important-cases","documents":"/api/acts/ad-b737-334-amdt-1-flight-deck-windows-no-2-no-4-and-no-5/documents"}}