{"id":"F2006B10192","name":"AD/GAF-N22/45 - Revised Compliance Requirements for Embodiment of Nomad Service Bulletins NMD-27-9 and NMD-27-15","slug":"ad-gaf-n22-45-revised-compliance-requirements-for-embodiment-of-nomad-service-bulletins-nmd-27-9-and","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":55850,"registerId":"commonwealth-F2006B10192-current","compilationNumber":null,"startDate":"2026-04-02","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/GAF-N22/45 - Revised Compliance Requirements for Embodiment of Nomad Service Bulletins NMD-27-9 and NMD-27-15","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)  \nGAF N22 and N24 Series Aeroplanes\n\nAD/GAF-N22/45 Revised Compliance Requirements for\n\nEmbodiment of Nomad Service Bulletins NMD-27-9 and NMD-27-15\n\n  \n6/82\n\nApplicability: All Nomad Model N22 and N22B landplanes not incorporating Modifications N211 and N63.\n\nRequirement: 1. Nomad Alert Service Bulletin ANMD-27-25.\n\n2. Upon receipt of this AD. the following placard with minimum 0.635 cm (1/4 inch) lettering shall be affixed in clear view of the pilot:-\n\n“UNTIL INCORPORATION OF MOD N211 (SB NMD-27-9) AND MOD N63 (SB NMD-27-15), AFT CG LIMIT IS 35% MAC”.\n\nCompliance: 1. Within 100 hours time in service after receipt of Mod. Kits but not later than 30 June 1982.\n\n2. Immediate upon receipt of this AD.\n\nBackground: Incidents have been reported on aircraft incorporating Mod. N439, where with severe turbulence and C.G. near the aft limit, control difficulties have been experienced.\n\nIncorporation of Mod. N211 alleviates this problem.","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 airworthiness issue with defined aircraft models. The scope remains tightly focused on the original safety concern regarding centre of gravity handling characteristics."},"complexity_factors":["Single, clearly defined applicability (specific aircraft models excluding those with existing mods)","Only two requirements: (1) install modifications per service bulletin, (2) display placard","Straightforward compliance timeline with clear deadline","Minimal cross-referencing (only references specific service bulletins by number)","No nested exceptions or conditional logic","Short document (approximately 150 words of substantive content)","Technical terminology limited to standard aviation terms (CG, MAC, Mod Kits) with context provided"],"plain_english_summary":"Owners/operators of GAF Nomad N22 and N22B landplanes (that do not already have Mods N211 and N63) must install those two modifications to eliminate a dangerous handling problem linked to Mod N439, which can cause loss of control in severe turbulence with an aft CG.  \n\nUntil modification, a warning placard restricting aft CG to 35% MAC must be displayed immediately; the mods must be fitted by 30 June 1982 (or within 100 flight hours after receiving kits)."},"flash_summary":{"complexity_score":3,"scope_assessment":{"changed":true,"description":"This instrument revises prior compliance requirements by imposing an immediate placard restriction and a defined embodiment timeline for Mods N211 and N63 on Nomad N22/N22B aircraft that lack those modifications. It changes the required operator actions and deadlines compared with earlier requirements (hence a revision of scope and compliance mechanics)."},"complexity_factors":["Technical but narrow scope: applies only to Nomad N22/N22B landplanes without Mods N211 and N63","Dual compliance actions and timings: immediate placard requirement vs. 100 hours (or fixed calendar date) for embodiment","Dependency on external documents: mandates specific Service Bulletins (NMD‑27‑9, NMD‑27‑15, ANMD‑27‑25) and Mod Kits","Precise hardware/specification requirement: placard text and minimum lettering size (0.635 cm / 1/4 inch)","Safety-critical operational constraint (aft CG limit) increasing enforcement and operational scrutiny","Potential logistical burden: obtaining kits and scheduling modifications within the specified window"],"plain_english_summary":"This airworthiness directive requires owners/operators of Nomad Model N22 and N22B landplanes that do not already have Mod N211 and Mod N63 to immediately fit a cockpit placard stating an aft centre-of-gravity limit of 35% MAC, and to embody the modifications called up in Service Bulletins NMD‑27‑9 and NMD‑27‑15 within 100 flight hours after receipt of modification kits (and no later than 30 June 1982). It responds to reported control difficulties with aft CG on aircraft incorporating Mod N439 and places the cost and installation decision on operators until the mods are fitted."}},"importantCases":[],"_links":{"self":"/api/acts/ad-gaf-n22-45-revised-compliance-requirements-for-embodiment-of-nomad-service-bulletins-nmd-27-9-and","history":"/api/acts/ad-gaf-n22-45-revised-compliance-requirements-for-embodiment-of-nomad-service-bulletins-nmd-27-9-and/history","analysis":"/api/acts/ad-gaf-n22-45-revised-compliance-requirements-for-embodiment-of-nomad-service-bulletins-nmd-27-9-and/analysis","conflicts":"/api/acts/ad-gaf-n22-45-revised-compliance-requirements-for-embodiment-of-nomad-service-bulletins-nmd-27-9-and/conflicts","importantCases":"/api/acts/ad-gaf-n22-45-revised-compliance-requirements-for-embodiment-of-nomad-service-bulletins-nmd-27-9-and/important-cases","documents":"/api/acts/ad-gaf-n22-45-revised-compliance-requirements-for-embodiment-of-nomad-service-bulletins-nmd-27-9-and/documents"}}