{"id":"F2006B10165","name":"AD/GAF-N22/19 - Rear Baggage Compartment, External Door - Placards","slug":"ad-gaf-n22-19-rear-baggage-compartment-external-door-placards","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":55795,"registerId":"commonwealth-F2006B10165-current","compilationNumber":null,"startDate":"2026-04-02","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/GAF-N22/19 - Rear Baggage Compartment, External Door - Placards","content":"---\nmeta-content-style-type: text/css\nmeta-content-type: application/xhtml+xml; charset=utf-8\nmeta-generator: Aspose.Words for .NET 22.10.0\n---\n\n?xml version=\"1.0\" encoding=\"utf-8\" standalone=\"no\"?>\n\nCOMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 105 CIVIL AVIATION SAFETY AUTHORITY\n\nSCHEDULE OF AIRWORTHINESS DIRECTIVES\n\n \n\n![](image.001.png)  GAF N22 and N24 Series Aeroplanes\n\n \n\nAD/GAF-N22/19 Rear Baggage Compartment, External Door - Placards\n\nApplicability: All models fitted with External rear baggage door. Document: GAF SB No. NMD-11-1.\n\nCompliance: Within 100 hours time in service after 31 August 1978.\n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n\n8/78\n","sortOrder":0}],"analysis":{"flash_summary":{"complexity_score":3,"scope_assessment":{"changed":false,"description":"The instrument as supplied applies to all models fitted with an external rear baggage door and mandates placard installation per the referenced service bulletin within a 100-hour TIS window. The text gives no indication that the scope (who is covered or what action is required) differs from the original stated intent within the AD itself."},"complexity_factors":["Narrow applicability limited to GAF N22 and N24 series aircraft fitted with an external rear baggage door (simple target group).","Single mandatory action (fit placards) reduces procedural complexity.","Technical details are deferred to an external document (GAF SB No. NMD-11-1), requiring users to obtain and apply that SB.","Compliance measured in flight hours (100 hours TIS) requires operators to track aircraft utilisation and schedule work accordingly.","AD provides no operational rationale or detailed installation steps in the text itself, increasing reliance on the SB for implementation specifics."],"plain_english_summary":"# What this instrument does (mechanical change)\n\nThis airworthiness directive (AD GAF-N22/19) requires that placards be fitted to the external rear baggage compartment door on applicable GAF N22 and N24 series aeroplanes. The AD directs compliance with the content and placement set out in GAF Service Bulletin No. NMD-11-1 (the referenced SB). Compliance must be completed within 100 hours time in service after 31 August 1978. (See: \"Applicability\" and \"Compliance\" lines and \"Document: GAF SB No. NMD-11-1\" in the instrument.)\n\n# Who it affects\n\n- Aircraft owners and operators of GAF N22 and N24 series aeroplanes that are fitted with an external rear baggage door (the AD's stated applicability).\n- Maintenance organisations and technicians who carry out the placard installation in accordance with the referenced service bulletin.\n- The Civil Aviation Safety Authority (CASA) as the issuer/enforcer of the AD.\n\n# How it works in practice\n\n- The AD makes installation of specified placards mandatory for affected aeroplanes. The exact text, size and location of the placards are determined by the referenced service bulletin (GAF SB No. NMD-11-1). (See: \"Document: GAF SB No. NMD-11-1\".)\n- Operators must schedule and complete the placard installation within 100 flight hours after 31 August 1978. (See: \"Compliance: Within 100 hours time in service after 31 August 1978.\")\n- Compliance will typically be recorded in the aircraft maintenance logbooks in line with normal airworthiness record practices; the AD itself prescribes the action and the SB supplies the technical specification.\n\n# Who pays and who decides\n\n- The financial cost of procuring and fitting the placards falls on the aircraft owner/operator (the party responsible for continuing airworthiness and compliance with ADs).\n- The Civil Aviation Safety Authority (CASA) enforces the AD; GAF's service bulletin supplies the technical detail required for conformity.\n\n# Incentives, costs, trade-offs and implementation issues\n\n- Incentives and costs: Operators are required to invest time and minor materials/labour to install placards within the specified hours. The AD shifts that compliance cost onto aircraft owners/operators (see \"Compliance\").\n- Administrative burden: The AD is directive but concise; implementers must consult the external service bulletin for technical particulars, so there is an additional step of retrieving and applying SB NMD-11-1. (See: \"Document: GAF SB No. NMD-11-1\".)\n- Scheduling impact: The 100-hour time-in-service window means operators must plan the installation into normal flight/maintenance schedules; this may impose modest operational timing costs if installation cannot be performed at a convenient outage.\n- Enforcement and recordkeeping: The AD imposes a clear compliance obligation for CASA to verify; operators will need to document completion in maintenance records for compliance evidence.\n- Discretion and specification: The AD itself mandates the action but delegates technical detail to the referenced SB; any discretion about exact placard content/placement lies in that SB rather than in the AD text.\n\n# Effects on private enterprise and market considerations\n\n- Competitive and commercial effects are likely small: the requirement applies narrowly to affected models and a single modification (placards). Independent maintenance organisations can perform the installation, so the measure does not constrain market access for maintenance providers beyond normal certification/approval requirements.\n- Potential minor effects on prices/productivity: any added maintenance time and material cost is likely small per aircraft; if many operators must schedule the work at the same facilities, there could be short-term scheduling pressure on maintenance providers.\n\n# Claimed purpose and testing that claim\n\n- The AD text itself does not state an explicit rationale; it mandates placards and references GAF SB No. NMD-11-1. Service bulletins of this type typically specify placards for information or safety reasons, but that purpose is asserted by the SB or issuing authority rather than stated in the AD text. The AD therefore makes the action mandatory without restating the SB's asserted reason.\n\n# Concentration of benefits and costs, and risks\n\n- Benefits, if they exist, are concentrated on users of the aircraft and those performing ground/maintenance tasks who rely on the placard information; costs are dispersed across affected operators in the form of a small one-off installation cost.\n- Implementation risks are administrative: ensuring all affected aircraft are identified, the SB is obtained and applied correctly, and completion is recorded within the 100-hour window.\n\n(References in the text: the AD's \"Applicability\" line, the \"Document: GAF SB No. NMD-11-1\" reference, and the \"Compliance: Within 100 hours time in service after 31 August 1978.\")"},"kimi_summary":{"content_quality":"ok","complexity_score":1,"scope_assessment":{"changed":false,"description":"This is a discrete, single-issue airworthiness directive from 1978 addressing a specific safety concern (baggage compartment placards). It has not expanded beyond its original narrow technical purpose."},"complexity_factors":["Extremely short document (approximately 100 words of substantive content)","No defined terms section","No cross-references to other legislation beyond a single service bulletin reference","Simple unconditional obligation: install placards within specified timeframe","Single applicability criterion (external rear baggage door fitted)","No exceptions, exemptions, or conditional logic"],"plain_english_summary":"This is an **Airworthiness Directive (AD)** — essentially a mandatory safety notice issued by Australia's Civil Aviation Safety Authority (CASA). It applies to specific Australian-made aircraft: the **GAF N22 and N24 series** (small utility aeroplanes, including the Nomad).\n\n**What it requires:**\n- Aircraft owners/operators must install **placards** (warning signs) on the **external rear baggage door**.\n- These placards are needed to warn against improper loading or operation that could affect flight safety.\n\n**Who must comply:**\n- Anyone operating a GAF N22 or N24 aircraft fitted with an external rear baggage door.\n\n**When:**\n- Within **100 hours of flying time** after 31 August 1978.\n\n**Why it matters:**\n- Baggage compartments on these aircraft have specific weight and loading limits. Without clear warnings, improper loading could shift the aircraft's centre of gravity, potentially causing loss of control. This directive ensures operators are reminded of these limits every time they access the compartment.\n\n**Key document reference:**\n- Operators must follow the manufacturer's Service Bulletin **GAF SB No. NMD-11-1** for the exact specifications of the placards."}},"importantCases":[],"_links":{"self":"/api/acts/ad-gaf-n22-19-rear-baggage-compartment-external-door-placards","history":"/api/acts/ad-gaf-n22-19-rear-baggage-compartment-external-door-placards/history","analysis":"/api/acts/ad-gaf-n22-19-rear-baggage-compartment-external-door-placards/analysis","conflicts":"/api/acts/ad-gaf-n22-19-rear-baggage-compartment-external-door-placards/conflicts","importantCases":"/api/acts/ad-gaf-n22-19-rear-baggage-compartment-external-door-placards/important-cases","documents":"/api/acts/ad-gaf-n22-19-rear-baggage-compartment-external-door-placards/documents"}}