{"id":"F2005L02818","name":"AD/B767/133 Amdt 1 - Flight Deck Dripshield Fire Blocking Installation","slug":"ad-b767-133-amdt-1-flight-deck-dripshield-fire-blocking-installation","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":37744,"registerId":"commonwealth-F2005L02818-current","compilationNumber":null,"startDate":"2026-04-01","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"Boeing 767 Series Aeroplanes","sectionType":"division","heading":"Boeing 767 Series Aeroplanes","content":"### Boeing 767 Series Aeroplanes\n\n| AD/B767/133 Amdt 1 | Flight Deck Dripshield FireBlocking Installation | 11/2005 |\n| ------------------ | ------------------------------------------------ | ------- |\n\n| Applicability: | Model 767 aircraft, line numbers 470 through 768; except line number 758.                                                                                                                                                                                             |\n| -------------- | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |\n| Requirement:   | Action in accordance with the technical requirements of FAA AD 2005-17-09 Amdt 39-14230.                                                                                                                                                                              |\n| Compliance:    | Before 22 March 2007.The compliance calendar time specified by FAA AD 2000-26-04 (original issue of this Directive) remains unchanged with the issue of superseding FAA AD2005-17-09.                                                                                 |\n|                | This Amendment becomes effective on 27 October 2005.                                                                                                                                                                                                                  |\n| Background:    | Investigations by the FAA indicated widespread use in drip shields of adhesive/material combinations that are easily ignited and able to propagate a small fire.Amendment 1 is issued in response to a new FAA AD, which removes certain aircraft from applicability. |\n\n![](image.001.png)  \nDavid Villiers  \nDelegate of the Civil Aviation Safety Authority\n\n15 September 2005","sortOrder":0},{"sectionNumber":"AD/B767/133 Amdt 1","sectionType":"part","heading":"AD/B767/133 Amdt 1","content":"## AD/B767/133 Amdt 1","sortOrder":1},{"sectionNumber":"Flight Deck Dripshield FireBlocking Inst","sectionType":"part","heading":"Flight Deck Dripshield FireBlocking Installation","content":"## Flight Deck Dripshield Fire  \nBlocking Installation","sortOrder":2},{"sectionNumber":"11/2005","sectionType":"part","heading":"11/2005","content":"## 11/2005","sortOrder":3}],"analysis":{"kimi_summary":{"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This is an amendment to an existing Airworthiness Directive. The scope has narrowed slightly (removing line number 758 from applicability) but remains tightly focused on the original safety purpose: preventing fire propagation in flight deck drip shields. No mission creep or expansion beyond the original fire safety intent."},"complexity_factors":["Very short document (under 300 words)","Only 1 defined term implicitly used ('line numbers' referring to production sequence)","Single cross-reference to external FAA document (AD 2005-17-09)","Simple conditional logic: applicability is a straightforward range with one exclusion","No nested exceptions or subsections","Clear, single compliance deadline","Minimal legislative machinery — essentially adopts US regulatory requirements by reference"],"plain_english_summary":"This FAA Airworthiness Directive requires operators of certain Boeing 767s (production line nos. 470–768, excluding 758) to install fire‑blocking material on flight‑deck dripshields per AD 2005‑17‑09. The change removes line 758 from the original order. It addresses easily ignited glue/materials that could propagate cockpit fires; compliance is mandatory (aircraft cannot legally fly if not done) and was required before 22 March 2007."},"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":true,"description":"Amendment 1 reduced the population of affected aircraft compared with the earlier issuance by removing certain line numbers from applicability (Background). The core obligation — to carry out the fireblocking installation in accordance with FAA AD 2005-17-09 — remains the same, so the amendment narrowed scope rather than broadened it. Compliance timing from an earlier FAA AD was explicitly left unchanged, preserving prior timing constraints while changing which aircraft are covered."},"complexity_factors":["Short instrument with limited provisions (single technical requirement by reference)","One applicability range with a single explicit exception (line numbers 470–768; except 758)","External cross-reference to FAA AD 2005-17-09 for technical steps (requires consulting another document)","Reference to an earlier FAA AD (2000-26-04) whose compliance calendar remains unchanged (cross-document timing dependency)","Fixed compliance date (22 March 2007) and effective date (27 October 2005) — simple timeline but strict deadline"],"plain_english_summary":"**What this instrument does (mechanics)\n\n- Requires operators of certain Boeing 767 aeroplanes to carry out the technical actions set out in FAA Airworthiness Directive (AD) 2005-17-09. The CASA AD adopts that FAA AD by reference and makes compliance mandatory (Requirement).\n- Applies to Boeing 767 aircraft with line numbers 470 through 768, except line number 758 (Applicability).\n- Requires compliance by 22 March 2007 (Compliance). The AD also states that the compliance calendar time from an earlier FAA AD (2000-26-04) is unchanged.\n- Becomes effective 27 October 2005 (Effective date).\n\nWhy it matters (safety context)\n\n- The FAA investigated the materials and adhesives used in flight-deck drip shields and found combinations that are easily ignited and can spread a small fire. The required actions respond to that fire-risk finding (Background).\n\nWho this affects and who pays\n\n- Affected parties: operators/owners of Boeing 767 aeroplanes with the listed line numbers (470–768, excluding 758). Maintenance organisations that perform the modification/installation are also engaged.\n- Who pays: the aircraft operators pay for the inspections, material changes and labour to meet the FAA AD requirements.\n\nWhat operators must do in practice\n\n- Read FAA AD 2005-17-09 and complete the modification/installation and any inspections it mandates (the CASA AD does not reproduce the technical steps; it requires compliance with the FAA AD).\n- Schedule the work before the 22 March 2007 compliance deadline, including any record-keeping needed to demonstrate compliance to CASA.\n\nPractical implications, trade-offs and risks\n\n- Direct costs and downtime: operators must allocate parts, labour and calendar time for the retrofit or repairs. That can mean planned maintenance slots or short-term grounding while work is done.\n- Concentrated costs, diffuse benefits: the financial burden falls on the specific operators of affected line-number aircraft, while the safety benefit is spread across crew and passengers who use those aircraft.\n- Implementation risks: availability of approved fireblocking materials, qualified technicians, and clear maintenance instructions (the CASA AD relies on the FAA document for technical detail). Delays or supply constraints could affect ability to meet the compliance date.\n- Behavioural incentives: operators may elect to schedule modifications during regular maintenance to reduce downtime, or in some cases consider retiring or selling affected airframes if retrofit cost is high relative to residual value.\n- Administrative burden: CASA enforces compliance; operators must retain evidence that they followed FAA AD 2005-17-09. The AD also keeps earlier compliance-calendar timing from FAA AD 2000-26-04 unchanged, which may affect sequencing of related work.\n\nScope change note\n\n- Amendment 1 narrows the set of affected aircraft by removing certain line numbers from applicability (Background). The substantive requirement — compliance with the FAA AD’s fireblocking installation — remains the mandated action (Requirement).\n\nSource citations: key points come from the AD text headings: Applicability, Requirement, Compliance, Background.**"}},"importantCases":[],"_links":{"self":"/api/acts/ad-b767-133-amdt-1-flight-deck-dripshield-fire-blocking-installation","history":"/api/acts/ad-b767-133-amdt-1-flight-deck-dripshield-fire-blocking-installation/history","analysis":"/api/acts/ad-b767-133-amdt-1-flight-deck-dripshield-fire-blocking-installation/analysis","conflicts":"/api/acts/ad-b767-133-amdt-1-flight-deck-dripshield-fire-blocking-installation/conflicts","importantCases":"/api/acts/ad-b767-133-amdt-1-flight-deck-dripshield-fire-blocking-installation/important-cases","documents":"/api/acts/ad-b767-133-amdt-1-flight-deck-dripshield-fire-blocking-installation/documents"}}