{"id":"F2006B03048","name":"AD/B747/147 - Stretched Upper Deck Evacuation Slides","slug":"ad-b747-147-stretched-upper-deck-evacuation-slides","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":42407,"registerId":"commonwealth-F2006B03048-current","compilationNumber":null,"startDate":"2026-04-01","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/B747/147 - Stretched Upper Deck Evacuation Slides","content":"COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 \\- 105 CIVIL AVIATION SAFETY AUTHORITY\n\nSCHEDULE OF AIRWORTHINESS DIRECTIVES\n\n![](image.001.png)  \nBoeing 747 Series Aeroplanes\n\nAD/B747/147 Stretched Upper Deck Evacuation Slides 6/95\n\nApplicability: Model 747-300 and \\-400 series aircraft equipped with BFGoodrich stretched upper deck evacuation slides, part number 7A1323-1, -2, -3, -4, -105, -106, -107, -108, -\n\n109, or \\-110.\n\nRequirement: Modify the BFGoodrich stretched upper deck evacuation slide, part number 7A1323- ( ), in accordance with the Accomplishment Instructions of BFGoodrich Service Bulletin 7A1323-25-266, Revision 1.\n\nNote 1: Installation of the “product improvements”, specified in paragraph 2.J. of the Accomplishment Instructions of the Service Bulletin, is not required by this Directive.\n\nNote 2: FAA AD 95-04-08 Amdt 39-9160 refers.\n\nCompliance: Prior to 6 April 1998.\n\nBackground: The FAA received reports of loss of air pressure and non-inflation of the inflatable tubes of the slide due to problems associated with the restraint strap, regulator assembly, and turbo fan flapper retaining roll pins.","sortOrder":0}],"analysis":{"kimi_summary":{"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This is a discrete, targeted safety directive addressing a specific mechanical defect in specific aircraft equipment. It has not expanded beyond its original purpose of mandating a specific repair to prevent slide inflation failures."},"complexity_factors":["Single, specific technical requirement referencing an external service bulletin","Limited applicability: only 2 aircraft models (747-300 and 747-400) with specific part numbers","No defined terms section — uses standard aviation terminology","No conditional logic or nested exceptions","Short document: approximately 150 words excluding header","Single compliance deadline with no phased or alternative compliance options","Two simple notes clarifying what is NOT required and cross-referencing the FAA equivalent"],"plain_english_summary":"This is an **Airworthiness Directive (AD)** — a mandatory safety order issued by Australia's Civil Aviation Safety Authority (CASA). It requires specific repairs to emergency evacuation slides on certain Boeing 747 aircraft.\n\n**What it does:**\n- Orders airlines to modify the emergency evacuation slides on the upper deck of Boeing 747-300 and 747-400 aircraft\n- Only applies to slides made by BFGoodrich with specific part numbers (7A1323 series)\n- Requires the work to be done following a specific technical manual (BFGoodrich Service Bulletin 7A1323-25-266, Revision 1)\n\n**Why it matters:**\nThe US Federal Aviation Administration (FAA) discovered that these slides could fail to inflate during an emergency. The problem involves three components: the restraint strap, the regulator assembly, and small metal pins (\"turbo fan flapper retaining roll pins\") that hold parts together. If the slide doesn't inflate, passengers and crew could be trapped on the upper deck during an emergency evacuation.\n\n**Who must comply:**\n- Airlines or operators flying Boeing 747-300 or 747-400 aircraft in Australia\n- Only those with the specific BFGoodrich slide models listed\n- The work had to be completed before 6 April 1998\n\n**Key details:**\n- The directive explicitly does **not** require optional \"product improvements\" mentioned in the service bulletin — only the mandatory safety fixes\n- This aligns with a corresponding US FAA directive (AD 95-04-08)"},"flash_summary":{"complexity_score":3,"scope_assessment":{"changed":false,"description":"The directive's scope targets specific BFGoodrich stretched upper-deck slide part numbers on 747-300/-400 aircraft to address reported non-inflation failures (Applicability; Requirement; Background). It does not expand applicability beyond those parts/models, and it expressly excludes optional 'product improvements' from the mandatory tasks (Note 1). Compliance timing is fixed (Compliance)."},"complexity_factors":["Technical modification required to inflatable slide assemblies (requires specialised maintenance/engineering work per BFGoodrich Service Bulletin).","Multiple specific part numbers and aircraft models in applicability increase tracking and fleet-level compliance management (Applicability).","Firm compliance deadline creates scheduling and aircraft-downtime planning requirements (Compliance: prior to 6 April 1998).","Directive mandates modification by reference to a manufacturer service bulletin rather than prescribing step-by-step regulatory text (Requirement).","One optional item (‘product improvements’) is excluded from the mandatory scope, requiring operators to distinguish required vs optional tasks (Note 1).","Cross-reference to FAA AD introduces alignment and record-keeping considerations across jurisdictions (Note 2 / Background)."],"plain_english_summary":"This directive requires operators of Boeing 747-300 and -400 aircraft fitted with specified BFGoodrich stretched upper-deck evacuation slides (listed part numbers) to modify those slides following BFGoodrich Service Bulletin 7A1323-25-266 Rev 1. Compliance is required by 6 April 1998. The modification responds to reports of loss of pressure and non-inflation linked to restraint straps, the regulator assembly and turbo fan flapper retaining roll pins. Operators are responsible for carrying out and funding the modifications; one listed ‘‘product improvement’’ is explicitly optional."}},"importantCases":[],"_links":{"self":"/api/acts/ad-b747-147-stretched-upper-deck-evacuation-slides","history":"/api/acts/ad-b747-147-stretched-upper-deck-evacuation-slides/history","analysis":"/api/acts/ad-b747-147-stretched-upper-deck-evacuation-slides/analysis","conflicts":"/api/acts/ad-b747-147-stretched-upper-deck-evacuation-slides/conflicts","importantCases":"/api/acts/ad-b747-147-stretched-upper-deck-evacuation-slides/important-cases","documents":"/api/acts/ad-b747-147-stretched-upper-deck-evacuation-slides/documents"}}