{"id":"F2018L01153","name":"AD/STINSON 108/1 State of Design Airworthiness Directives","slug":"ad-stinson-108-1-state-of-design-airworthiness-directives","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":97833,"registerId":"commonwealth-F2018L01153-current","compilationNumber":null,"startDate":"2026-04-02","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"Univair Aircraft (Stinson) 108 Series Ae","sectionType":"part","heading":"Univair Aircraft (Stinson) 108 Series Aeroplanes","content":"# Univair Aircraft (Stinson) 108 Series Aeroplanes\n\n| AD/STINSON 108/1 | State of Design Airworthiness Directives | 17/2018 |\n| ---------------- | ---------------------------------------- | ------- |\n\n```html\n

Applicability:

All Univair Aircraft Corporation Stinson Model 108 series aircraft.

Requirement:

1. Determine from Aircraft Records if the requirements of the Federal Aviation Administration of the United States of America (FAA) Airworthiness Directives, as in force at the time of issue of this AD, specified in Table 1 of this AD have been carried out.

2. If it is determined that an FAA AD listed in Table 1 and as in force at the time of issue of this AD, is applicable and has not been previously complied with, then perform the actions required by that AD.

Airworthiness Directive

Subject

FAA AD 47-50-11

Front Ash Tray Modification or Placard Installation

FAA AD 49-16-02

Wing Fabric - Inspection and Rectification

FAA AD 50-25-01

Fuel Drip Strip Installation

FAA AD 54-02-02

Wheel Skis - Rigging.

Table 1 - FAA Airworthiness Directives

Compliance:

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

If a CofA has been issued for the aircraft - within 60 days after the commencement date of this Directive.

This AD commences on 31 August 2018.

Background:

A review of the Australian Aircraft Register found that this aircraft type has been registered in Australia since 1987. There are currently 12 aircraft of this type on the register with the majority having been registered in 1994/95.

This AD is issued to ensure that compliance with these AD’s has been accomplished for aircraft imported into Australia.

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 recently registered Stinson model 108 aircraft.

CASA acknowledges 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 aircraft.

\n```\n\n![](image.001.jpeg)\n\nPieter van Dijk \nDelegate of the Civil Aviation Safety Authority\n\n21 August 2018","sortOrder":0},{"sectionNumber":"AD/STINSON 108/1","sectionType":"part","heading":"AD/STINSON 108/1","content":"## AD/STINSON 108/1","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":"17/2018","sectionType":"part","heading":"17/2018","content":"## 17/2018","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"},"kimi_summary":{"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This AD maintains its original narrow scope. It was issued specifically to address the gap in compliance verification for imported Stinson 108 aircraft and has not expanded beyond that purpose. The document references only the four historical FAA ADs necessary for this specific aircraft type."},"complexity_factors":["Single, clearly defined applicability (one aircraft model series)","Only 2 substantive requirements (check records, then comply if needed)","Simple conditional logic (if not done → do it)","Fixed compliance dates with only two scenarios (pre-CofA vs post-CofA)","No defined terms section or complex cross-referencing to other legislation","Short, self-contained document with clear table of referenced FAA directives","No exceptions, exemptions, or nested conditions"],"plain_english_summary":"This AD requires owners/operators of the Stinson Model 108 fleet registered in Australia to verify whether four legacy FAA-mandated safety modifications have been done and, if not, complete them. It affects the roughly dozen affected aircraft and ensures imported, older airframes meet longstanding safety standards.\n\nCompliance is required before issuance of an Australian airworthiness certificate, or within 60 days of 31 August 2018 for already‑certificated aircraft."},"flash_summary":{"complexity_score":4,"scope_assessment":{"changed":true,"description":"CASA applies the listed FAA Airworthiness Directives 'as in force at the time of issue' to Australian-registered Univair (Stinson) 108 aircraft, making those once-only FAA actions mandatory for imported or recently registered aircraft in Australia; CASA also notes some listed ADs may be inapplicable depending on manufacture date or configuration."},"complexity_factors":["Cross-reference to foreign (FAA) ADs listed in Table 1 — requires locating and interpreting external directives.","Applicability determination from aircraft records (Requirement paras 1–2) — owners/operators must assess whether each FAA AD applies to their specific aircraft.","Obligation to perform FAA AD actions if not previously complied with (Requirement para 2) — may require physical modifications or inspections.","Timing constraint: compliance before CofA issue or within 60 days after commencement (Compliance section) — introduces scheduling/operational pressure.","ADs are described as once-only with compliance dates already passed (Background) — creates retrospective compliance checks for imported/recently registered aircraft.","Variation in manufacture date, configuration or modification status affects applicability (Background) — increases interpretive burden.","Small fleet with staggered registration dates (Background) — administrative tracking needed for multiple individual cases.","Regulatory discretion implicit in CASA's acknowledgement that some ADs may not apply (Background) — requires case-by-case assessment."],"plain_english_summary":"**This directive requires owners/operators of Univair (Stinson) Model 108 aircraft on the Australian register to check aircraft records for compliance with the specific FAA Airworthiness Directives listed in Table 1 and, where not previously done, to carry out the actions those FAA ADs require.**\n\nCASA states the measure is to ensure imported or recently registered Stinson 108s have had once-only modifications or inspections; owners pay for any required work and must comply before issue of a Certificate of Airworthiness or within 60 days of this AD commencing."}},"importantCases":[],"_links":{"self":"/api/acts/ad-stinson-108-1-state-of-design-airworthiness-directives","history":"/api/acts/ad-stinson-108-1-state-of-design-airworthiness-directives/history","analysis":"/api/acts/ad-stinson-108-1-state-of-design-airworthiness-directives/analysis","conflicts":"/api/acts/ad-stinson-108-1-state-of-design-airworthiness-directives/conflicts","importantCases":"/api/acts/ad-stinson-108-1-state-of-design-airworthiness-directives/important-cases","documents":"/api/acts/ad-stinson-108-1-state-of-design-airworthiness-directives/documents"}}