{"id":"F2017L01472","name":"AD/GA8/7 Amdt 1 - Fuel System Ventilation and Drainage Modification","slug":"ad-ga8-7-amdt-1-fuel-system-ventilation-and-drainage-modification","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":144261,"registerId":"commonwealth-F2017L01472-current","compilationNumber":null,"startDate":"2026-04-03","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"GippsAero GA8 Series Aeroplanes","sectionType":"part","heading":"GippsAero GA8 Series Aeroplanes","content":"# GippsAero GA8 Series Aeroplanes\n\n| AD/GA8/7 Amdt 1 | Fuel System Ventilation and Drainage Modification | 23/2017 |\n| --------------- | ------------------------------------------------- | ------- |\n\n| Applicability: | GippsAero GA8 and GA8-TC 320 aircraft as identified in GippsAero Service Bulletin SB-GA8-2012-96 Issue 6, as in force at the time of commencement of this AD.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           |\n| -------------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |\n| Requirement:   | 1 Modify the aircraft in accordance with Part 1 of GippsAero Service BulletinSB-GA8-2012-96 Issue 6 as in force at the time of commencement of this AD; and2 If a cargo pod part number GA8-255004-017 or GA8-255004-019 is installed in the aircraft - modify the cargo pod in accordance with Part 2 of GippsAero Service Bulletin SB-GA8-2012-96 Issue 6 as in force at the time of commencement of this AD; and3 Modify the aircraft in accordance with Part 3 of GippsAero Service Bulletin SB‑GA8-2012-96 Issue 6 as in force at the time of commencement of this AD.Note: Compliance with requirements (1) and (2) of the original issue of AD/GA8/7 constitutes compliance with the equivalent requirements of this directive, AD/GA8/7 Amdt 1. |\n| Compliance:    | For requirement 1: compliance before 100 flight hours from 6 September 2013, (the effective date of the original issue of AD/GA8/7) or if the aircraft has already flown 100 flight hours before further flight.For requirement 2: compliance concurrently with requirement 1.For requirement 3: compliance before the earlier of the following:(a) 100 flight hours; or(b) 3 monthsafter the effective date of this AD.                                                                                                                                                                                                                                                                                                                                |\n|                | This AD commences on 20 November 2017.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  |\n| Background:    | The GippsAero GA8 and GA8-TC 320 aircraft Mk II fuel system features an integral sump tank located in the floor structure forward of the co-pilot seat. The current configuration of the compartments adjacent to the Mk II sump tank does not meet the requirements of regulation 23.967 (b) of the Federal Aviation Regulations of the United States of America in that they are not suitably ventilated and drained to prevent the accumulation of flammable fluids or vapours.                                                                                                                                                                                                                                                                      |\n\n|     | Amendment 1 of this directive mandates ventilation of the area around the integral sump tank as presented in SB-GA8-2012-96 Issue 6 to meet the requirements of regulation 23.967 (b) of the Federal Aviation Regulations of the United States of America. |\n| --- | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |\n\n![](image.001.jpeg)\n\nChristopher De Luis  \nDelegate of the Civil Aviation Safety Authority\n\n13 November 2017","sortOrder":0},{"sectionNumber":"AD/GA8/7 Amdt 1","sectionType":"part","heading":"AD/GA8/7 Amdt 1","content":"## AD/GA8/7 Amdt 1","sortOrder":1},{"sectionNumber":"Fuel System Ventilation and Drainage Mod","sectionType":"part","heading":"Fuel System Ventilation and Drainage Modification","content":"## Fuel System Ventilation and Drainage Modification","sortOrder":2},{"sectionNumber":"23/2017","sectionType":"part","heading":"23/2017","content":"## 23/2017","sortOrder":3}],"analysis":{"flash_summary_failed":{"failed":true,"reason":"Unauthenticated. Configure AI_GATEWAY_API_KEY or use a provider module. Learn more: https://ai-sdk.dev/unauthenticated-ai-gateway","source":"analysis-cron"},"kimi_summary":{"content_quality":"ok","complexity_score":3,"scope_assessment":{"changed":false,"description":"This is Amendment 1 to an existing Airworthiness Directive. It maintains the original scope (fuel system ventilation for GA8 aircraft) but updates the technical requirements to reference Issue 6 of the service bulletin rather than earlier versions. The amendment adds Part 3 as a new requirement but this is a technical refinement rather than scope creep — it remains tightly focused on the original safety issue of fuel system ventilation and drainage."},"complexity_factors":["Multiple conditional requirements (3 separate modification requirements with interdependencies)","Cross-references to external technical document (Service Bulletin SB-GA8-2012-96 Issue 6) which is not reproduced in the directive","Nested applicability conditions (specific aircraft models AND specific cargo pod part numbers trigger additional requirements)","Layered compliance deadlines with alternative triggers (flight hours vs calendar time, 'earlier of' clauses)","Reference to foreign regulatory standard (US Federal Aviation Regulations 23.967(b)) without full context","Grandfathering clause for prior compliance creating an exception to the general rule"],"plain_english_summary":"This AD mandates owners/operators of GippsAero GA8 and GA8-TC 320 aeroplanes identified in Service Bulletin SB-GA8-2012-96 to modify the fuel-sump ventilation and drainage (including applicable cargo pod and further aircraft changes) to eliminate a fire/explosion hazard from trapped fuel vapour.  \n\nSome work must have been done by 100 flight hours from 6 Sep 2013 (or immediately if already exceeded); remaining modifications are due within 100 flight hours or three months from 20 Nov 2017. Prior compliance with the 2013 AD satisfies the earlier requirements."},"flash_summary":{"complexity_score":4,"scope_assessment":{"changed":false,"description":"The amendment specifies compliance by reference to SB‑GA8‑2012‑96 Issue 6 and sets timing, but does not broaden which aircraft or parts are covered. It confirms that compliance with the original AD’s requirements satisfies this amendment (see Note on equivalence) and therefore does not change the AD’s substantive scope."},"complexity_factors":["Technical modification required to aircraft fuel‑system ventilation and drainage (requires maintenance/engineering expertise).","Mandate references an external document (GippsAero Service Bulletin SB‑GA8‑2012‑96 Issue 6) as the normative method of compliance.","Multiple, staggered compliance deadlines (100 flight hours, concurrent actions, or 3 months) increase scheduling complexity for operators.","Part‑specific applicability (only GA8/GA8‑TC 320 aircraft as identified in the SB, and two cargo pod part numbers) requires record checks.","Regulatory standard referenced is a foreign rule (FAR 23.967(b)), so auditors must confirm equivalence in interpretation.","Note about equivalence to the original AD means administrative tracking of compliance history is necessary."],"plain_english_summary":"This Airworthiness Directive requires owners/operators of GippsAero GA8 and GA8‑TC 320 aeroplanes identified in Service Bulletin SB‑GA8‑2012‑96 Issue 6 to modify fuel‑system ventilation and drainage so the area around the integral sump tank cannot accumulate flammable fluids or vapours (Requirement; Background). If specific cargo pods (GA8‑255004‑017 or ‑019) are fitted they must be modified too. Operators must arrange and pay for the work, and meet the AD’s deadlines (Compliance)."}},"importantCases":[],"_links":{"self":"/api/acts/ad-ga8-7-amdt-1-fuel-system-ventilation-and-drainage-modification","history":"/api/acts/ad-ga8-7-amdt-1-fuel-system-ventilation-and-drainage-modification/history","analysis":"/api/acts/ad-ga8-7-amdt-1-fuel-system-ventilation-and-drainage-modification/analysis","conflicts":"/api/acts/ad-ga8-7-amdt-1-fuel-system-ventilation-and-drainage-modification/conflicts","importantCases":"/api/acts/ad-ga8-7-amdt-1-fuel-system-ventilation-and-drainage-modification/important-cases","documents":"/api/acts/ad-ga8-7-amdt-1-fuel-system-ventilation-and-drainage-modification/documents"}}