{"id":"F2015L01427","name":"AD/G1159/21 Amdt 2 - Jumpseat Placard – Installation","slug":"ad-g1159-21-amdt-2-jumpseat-placard-installation","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":154541,"registerId":"commonwealth-F2015L01427-current","compilationNumber":null,"startDate":"2026-04-04","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"Gulfstream Aerospace G1159, G-IV and GV ","sectionType":"division","heading":"Gulfstream Aerospace G1159, G-IV and GV Series Aeroplanes","content":"### Gulfstream Aerospace G1159, G-IV and GV Series Aeroplanes\n\n| AD/G1159/21 Amdt 2 | Jumpseat Placard - Installation | 19/2015 |\n| ------------------ | ------------------------------- | ------- |\n\n| Applicability: | All Model G1159 aircraft.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  |\n| -------------- | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |\n| Requirement:   | To prevent injury to an occupant of any jumpseat located between fuselage stations 119 and 169, accomplish one of the following:1. Install a placard either on the bulkhead adjacent to the jumpseat or any equivalent location approved by the Civil Aviation Safety Authority, utilising a minimum of 3/16 in. (5 mm) high lettering with the wording “JUMPSEAT OCCUPANCY DURING TAXI, TAKEOFF OR LANDING PROHIBITED”.2. Install the nose landing gear wheel-well bulkhead modification to eliminate drag strut penetration in accordance with GAAC Service change No. 226 Part 11.The placard described in paragraph 1 may be removed on the incorporation of the modification detailed in paragraph 2. |\n| Compliance:    | Within 10 hours time in service after 15 May 1978, unless already accomplished.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            |\n|                | The effective date of this AD is 18 September 2015.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        |\n| Background:    | This amendment clarifies the AD applicability as being only to the original G1159 model (G-II). The United States Federal Aviation Administration (FAA) issued the original foreign AD (FAA AD 77-13-01) on which this Australian AD is based.                                                                                                                                                                                                                                                                                                                                                                                                                                                             |\n\n![](image.001.png)\n\nMike Higgins  \nDelegate of the Civil Aviation Safety Authority\n\n7 September 2015","sortOrder":0},{"sectionNumber":"AD/G1159/21 Amdt 2","sectionType":"part","heading":"AD/G1159/21 Amdt 2","content":"## AD/G1159/21 Amdt 2","sortOrder":1},{"sectionNumber":"Jumpseat Placard - Installation","sectionType":"part","heading":"Jumpseat Placard - Installation","content":"## Jumpseat Placard - Installation","sortOrder":2},{"sectionNumber":"19/2015","sectionType":"part","heading":"19/2015","content":"## 19/2015","sortOrder":3}],"analysis":{"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":"The amendment narrows and clarifies applicability: it states the AD applies only to the original G1159 model (G‑II). This is explicitly noted in the Background as a clarification of applicability from the prior wording (Background)."},"complexity_factors":["Two alternative compliance routes (placard installation or structural modification) create a choice for operators about cost and downtime (Requirement).","Applicability narrowed to the original G1159 (G‑II) model in the amendment, which may require owners to confirm model status (Background / Applicability).","Reference to an external technical document for the modification (GAAC Service change No. 226 Part 11) requires access to that material and technical work (Requirement).","Regulator discretion over acceptable placard locations (CASA approval) introduces a small administrative approval step (Requirement).","Historic short compliance window (10 hours TIS after 15 May 1978) and later AD effective date may cause record‑checking or retrospective compliance questions (Compliance).","Removal of the placard upon incorporation of the modification creates a follow‑up administrative action for operators (Requirement)."],"plain_english_summary":"This directive requires operators of Gulfstream G1159 (G‑II) aeroplanes to either fit a “JUMPSEAT OCCUPANCY DURING TAXI, TAKEOFF OR LANDING PROHIBITED” placard or install a nose‑gear bulkhead modification that removes the hazard. It applies to jumpseats between fuselage stations 119 and 169 and aims to prevent occupant injury. Operators pay for the placard or modification; the Civil Aviation Safety Authority may approve alternate placard locations. Compliance was required within 10 hours TIS after 15 May 1978; effective date 18 Sept 2015."},"kimi_summary":{"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":true,"description":"The original 1978 directive applied broadly to G1159 series aircraft. This 2015 amendment narrows the scope significantly by clarifying applicability is limited to the original G1159 (G-II) model only, explicitly excluding the later G-IV and GV variants that were developed from the same basic airframe. The document headers confusingly still list G-IV and GV, but the Background section and amendment purpose confirm the scope reduction to G-II only."},"complexity_factors":["Very short document (under 300 words of substantive text)","Only 2 defined technical references (fuselage stations 119-169, GAAC Service Change No. 226 Part 11)","Simple binary choice between two compliance options","Single cross-reference to US FAA AD 77-13-01 in background only","No nested conditions or exceptions beyond the standard 'unless already accomplished'","Clear, specific measurements provided (3/16 in. / 5 mm lettering height)"],"plain_english_summary":"An Australian airworthiness directive for Gulfstream G1159 (G‑II) business jets requires owners/operators to mitigate a hazard from jumpseats between fuselage stations 119–169 by either installing a 5mm‑letter placard banning jumpseat occupancy during taxi/takeoff/landing or fitting a Gulfstream structural modification to the nose‑gear bulkhead (after which the placard may be removed). It’s retroactive and prevents injury from structure intrusion; it applies only to the original G‑II."}},"importantCases":[],"_links":{"self":"/api/acts/ad-g1159-21-amdt-2-jumpseat-placard-installation","history":"/api/acts/ad-g1159-21-amdt-2-jumpseat-placard-installation/history","analysis":"/api/acts/ad-g1159-21-amdt-2-jumpseat-placard-installation/analysis","conflicts":"/api/acts/ad-g1159-21-amdt-2-jumpseat-placard-installation/conflicts","importantCases":"/api/acts/ad-g1159-21-amdt-2-jumpseat-placard-installation/important-cases","documents":"/api/acts/ad-g1159-21-amdt-2-jumpseat-placard-installation/documents"}}