{"id":"F2020L01118","name":"AD/GC-1/1 State of Design Airworthiness Directives","slug":"ad-gc-1-1-state-of-design-airworthiness-directives","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":113530,"registerId":"commonwealth-F2020L01118-current","compilationNumber":null,"startDate":"2026-04-03","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"Swift Museum Foundation GC-1A and GC-1B ","sectionType":"division","heading":"Swift Museum Foundation GC-1A and GC-1B Series Aeroplanes","content":"### Swift Museum Foundation GC-1A and GC-1B Series Aeroplanes\n\n| AD/GC-1/1 | State of Design Airworthiness Directives | 18/2020 |\n| --------- | ---------------------------------------- | ------- |\n\n```html\n

Applicability:

Swift Museum Foundation Inc. GC-1A and GC-1B.

Requirement:

1. Determine the applicability of the United States of America Federal Aviation Administration (FAA) Airworthiness Directives (AD) listed in Table 1.

2. If it is determined that an FAA AD listed in Table 1, as in force from time to time, is applicable and has not been previously accomplished, perform the actions required by that AD.

Table 1

FAA AD

Issue Date

Title

56-16-04

Landing Gear Torque Knees

51-10-05

Fuselage Reinforcement Rework

51-02-02

Asbestos Cloth Removal

48-28-01

Fuselage Bulkhead Rework

47-25-07

Oil Radiator Outlet Sleeve

47-25-06

Carburettor Flexible Air Duct

47-06-06

Engine Breather Line

47-06-05

Battery Vent Plugs

47-06-04

Landing Gear Washers

47-06-03

Elevator Cable Collars

47-06-02

Landing Gear Retraction Placard

46-42-01

Cabin Heater Valve Replacement

\n```\n\n```html\n

FAA AD

Issue Date

Title

46-33-02

Fuselage Bulkhead Flange Stiffener

46-23-04

Addition of Rivets in Wing Skin

Note 1: FAAs ADs may be accessed via the internet at the following URL:

http://rgl.faa.gov/Regulatory_and_Guidance_Library/rgAD.nsf/Frameset?OpenPage

Note 2: The words “as in force from time to time” require compliance with the most recent version of the referenced document.

Compliance:

If a certificate of airworthiness has not been issued for the aircraft - before issue of the certificate of airworthiness.

If a certificate of airworthiness has been issued for the aircraft - within 6 months after the commencement date of this Directive.

This AD commences on 17 September 2020.

Background:

The FAA ADs listed in Table 1 of this Directive require once-only actions for which the compliance date and/or period has passed. CASA has determined that these ADs may be applicable to Australian registered aircraft. This Directive is issued to ensure all State of Design ADs are complied with.

CASA appreciates that, due to date of aircraft manufacture or aircraft configuration and modification status, some of the ADs listed in Table 1 will not be applicable to some aeroplanes.

\n```\n\n![A drawing of a face\nDescription automatically generated](image.001.jpeg)\n\nPieter van Dijk \nDelegate of the Civil Aviation Safety Authority\n\n25 August 2020","sortOrder":0},{"sectionNumber":"AD/GC-1/1","sectionType":"part","heading":"AD/GC-1/1","content":"## AD/GC-1/1","sortOrder":1},{"sectionNumber":"State of Design Airworthiness Directives","sectionType":"part","heading":"State of Design Airworthiness Directives","content":"## State of Design Airworthiness Directives","sortOrder":2},{"sectionNumber":"18/2020","sectionType":"part","heading":"18/2020","content":"## 18/2020","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 Airworthiness Directive maintains its original scope. It was issued specifically to ensure Australian-registered Swift GC-1A and GC-1B aircraft comply with relevant US Federal Aviation Administration safety directives. The document does not expand beyond this purpose — it simply lists the applicable FAA ADs and sets compliance timeframes. This is a standard 'State of Design' AD, which is CASA's regular mechanism for adopting foreign airworthiness requirements for aircraft designed overseas."},"complexity_factors":["Single, clearly defined applicability (one specific aircraft model series)","Simple two-step compliance requirement (determine applicability, then act if required)","14 external references to FAA directives, but presented in a straightforward table format","No defined terms section or complex interpretation provisions","Clear, unambiguous compliance dates with only two scenarios (pre-certification vs post-certification)","No nested exceptions or conditional logic beyond the basic 'if applicable' test","Short document (approximately 1 page of substantive content)","Incorporation by reference to external documents (FAA ADs) adds some complexity, but the 'as in force from time to time' language is standard and clearly explained in Note 2"],"plain_english_summary":"This AD requires Australian owners/operators of Swift Museum Foundation GC-1A and GC-1B aeroplanes to determine whether 14 specified FAA airworthiness directives apply to their aircraft and, if so, carry out the required corrective actions. \n\nNew aircraft must comply before an airworthiness certificate is issued; existing aircraft had to comply within six months of 17 September 2020. CASA adopts these FAA measures to address known safety defects in these vintage aircraft and maintain airworthiness."},"flash_summary":{"complexity_score":3,"scope_assessment":{"changed":false,"description":"The Directive enforces compliance with State‑of‑Design (FAA) airworthiness directives for the Swift GC‑1A/GC‑1B series by requiring operators to determine applicability and carry out listed FAA AD actions. It does not expand the population of affected types beyond the listed Swift models or add obligations beyond adopting the FAA AD requirements and specified compliance timing (see Requirement and Compliance sections)."},"complexity_factors":["Cross‑jurisdictional referencing: mandates relying on foreign (FAA) ADs “as in force from time to time”, creating an ongoing requirement to track updates.","Applicability assessment: requires individual operators to determine whether each listed FAA AD applies to their specific aircraft/configuration.","Multiple discrete ADs listed: table contains many separate FAA AD identifiers, so compliance may involve several different one‑off actions.","Differential compliance timing: different deadlines depending on whether a certificate of airworthiness has been issued.","Potential recordkeeping and administrative burden for owners/operators to demonstrate applicability and completion.","Source text notes some ADs may not be applicable depending on manufacture date or modification status, adding factual inquiry complexity."],"plain_english_summary":"This directive requires operators of Swift Museum Foundation GC‑1A and GC‑1B aeroplanes to check whether the listed United States FAA Airworthiness Directives apply and, if they do, to carry out the FAA‑required actions using the most recent version. Compliance must occur before issuing a certificate of airworthiness, or within six months for aircraft already certificated (commencement 17 September 2020)."}},"importantCases":[],"_links":{"self":"/api/acts/ad-gc-1-1-state-of-design-airworthiness-directives","history":"/api/acts/ad-gc-1-1-state-of-design-airworthiness-directives/history","analysis":"/api/acts/ad-gc-1-1-state-of-design-airworthiness-directives/analysis","conflicts":"/api/acts/ad-gc-1-1-state-of-design-airworthiness-directives/conflicts","importantCases":"/api/acts/ad-gc-1-1-state-of-design-airworthiness-directives/important-cases","documents":"/api/acts/ad-gc-1-1-state-of-design-airworthiness-directives/documents"}}