{"id":"F2006B10023","name":"AD/G1159/21 Amdt 1 - Jumpseat Placard - Installation","slug":"ad-g1159-21-amdt-1-jumpseat-placard-installation","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"repealed","isInForce":false,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":55411,"registerId":"commonwealth-F2006B10023-current","compilationNumber":null,"startDate":"2026-04-02","status":"Repealed","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/G1159/21 Amdt 1 - Jumpseat Placard - Installation","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)  Gulfstream (Grumman) G1159 and G-IV Series Aeroplanes\n\n \n\n# AD/G1159/21\n\nAmdt 1\n\nApplicability: All models.\n\n# Jumpseat Placard - Installation 6/78\n\n \n\nRequirement: To prevent injury to an occupant of any jumpseat located between fuselage stations 119 and 169, accomplish one of the following:\n\n \n\n1. Install a placard either on the bulkhead adjacent to the jumpseat or any equivalent location approved by the Secretary, utilising a minimum of 3/16 in. (5mm) high lettering with the wording “JUMPSEAT OCCUPANCY DURING TAXI, TAKEOFF OR LANDING PROHIBITED”.\n\n\n \n\n2.    Install the nose landing gear wheel-well bulkhead modification to eliminate drag strut penetration in accordance with GAAC Service change No. 226 Part 11.\n\n \n\nThe placard described in sub-para. 1 may be removed on the incorporation of either the modification detailed in sub-para. 2 or for the period of extension of compliance granted by concession.\n\n \n\nCompliance: Within 10 hours time in service after 15 May 1978, unless already accomplished.\n\n \n\nNote 1: No concession extending this compliance beyond 8 November, 1979 shall be granted.\n\n \n\nNote 2: No concession extending this compliance to a date prior to 8 November, 1979 shall be granted unless evidence of a firm commitment by GAAC on the available date for the modification kit for that S/No. aircraft is supplied to the Secretary by 21 July 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","sortOrder":0}],"analysis":{"kimi_summary":{"_metrics":{"model":"kimi-k2.5","source":"moonshot-batch","completionTokens":2029},"content_quality":"ok","complexity_score":4,"scope_assessment":{"changed":true,"description":"This amendment expands the original directive beyond a simple placard requirement by adding a permanent hardware modification alternative (sub-para 2) and establishing a detailed concession framework with specific evidentiary requirements and date restrictions that likely did not exist in the original AD/G1159/21."},"complexity_factors":["Alternative compliance methods with conditional removal rights","Precise technical specifications (5mm lettering, specific fuselage station ranges 119-169)","Hard-coded compliance deadlines with fixed calendar dates","Nested concession restrictions requiring evidentiary proof for early extensions","Cross-reference to external technical document (GAAC Service Change No. 226)"],"plain_english_summary":"This safety directive requires Gulfstream G1159 and G‑IV operators to prevent occupancy of specific jumpseats (between fuselage stations 119–169) during taxi, takeoff, and landing. Operators must either install a prescribed warning placard or fit a nose‑gear wheel‑well bulkhead hardware modification per GAAC Service Change No. 226 Part 11. The placard can be removed once the modification is installed (or temporarily with an approved concession). Compliance is due within 10 flight hours after 15 May 1978; extensions not allowed past 8 November 1979 (proof of kit commitment required by 21 July 1978)."}},"importantCases":[],"_links":{"self":"/api/acts/ad-g1159-21-amdt-1-jumpseat-placard-installation","history":"/api/acts/ad-g1159-21-amdt-1-jumpseat-placard-installation/history","analysis":"/api/acts/ad-g1159-21-amdt-1-jumpseat-placard-installation/analysis","conflicts":"/api/acts/ad-g1159-21-amdt-1-jumpseat-placard-installation/conflicts","importantCases":"/api/acts/ad-g1159-21-amdt-1-jumpseat-placard-installation/important-cases","documents":"/api/acts/ad-g1159-21-amdt-1-jumpseat-placard-installation/documents"}}