{"id":"F2008L02965","name":"AD/OH-58/1 - State of Design Airworthiness Directives","slug":"ad-oh-58-1-state-of-design-airworthiness-directives","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":74931,"registerId":"commonwealth-F2008L02965-current","compilationNumber":null,"startDate":"2026-04-02","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"Bell OH-58A (206A-1) Series Helicopters","sectionType":"division","heading":"Bell OH-58A (206A-1) Series Helicopters","content":"### Bell OH-58A (206A-1) Series Helicopters\n\n| AD/OH-58/1 | State of Design Airworthiness Directives | 9/2008 |\n| ---------- | ---------------------------------------- | ------ |\n\n```html\n

Applicability:

Model OH-58A (Bell 206A-1) series helicopters; including all certificated versions.

Requirement:

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

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

Table 1

AD Number

Effective Date

Title

2005-21-03

21 November 2005

Tail Rotor Blade Root Doubler

2003-13-14

12 August 2003

Chip Detector

90-21-03

14 August 1991

Tail Rotor Blade Assembly

`

81-18-01 R1

15 January 2002

Trunnion

78-11-02 R1

15 December 1988

Rotor Blade Straps

76-15-03

29 July 1976

Main Rotor Blade Tension-Torsion Strap

76-04-09

30 March 1976

Main Rotor Hub Yokes

75-18-07

19 September 1975

Rotor Blade Pillow Block Assemblies

75-06-03

20 October 1975

Pitch Link Assembly

74-24-01

15 November 1974

Main Rotor Blade Grips

73-19-08

15 September 1973

Strap Fittings and Pins

72-19-01

15 September 1972

Main Rotor Retention Straps

71-08-03

18 November 1971

Particle Separation Kit

\n```\n\n| Compliance: | For Requirements 1 and 2 - Within 30 days after the effective date of this Directive or prior to the issue of a certificate of airworthiness, whichever occurs later. |\n| ----------- | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |\n| | This Airworthiness Directive becomes effective on 28 August 2008. |\n| Background: | The FAA ADs listed in Table 1 of this Directive is the current list of FAA ADs applicable to the Model OH-58A (206A-1) helicopter and require certain actions for which the compliance times may or may not have 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. |\n| | CASA appreciates that, due to date of aircraft manufacture or aircraft configuration and modification status, not all the ADs listed in Table 1 will be applicable. |\n\n![](image.001.png) \nDavid Villiers \nDelegate of the Civil Aviation Safety Authority\n\n7 July 2008","sortOrder":0},{"sectionNumber":"AD/OH-58/1","sectionType":"part","heading":"AD/OH-58/1","content":"## AD/OH-58/1","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":"9/2008","sectionType":"part","heading":"9/2008","content":"## 9/2008","sortOrder":3}],"analysis":{"flash_summary":{"complexity_score":3,"scope_assessment":{"changed":false,"description":"The Directive's scope is to require operators of Australian-registered Bell OH-58A (206A-1) helicopters to determine applicability of, and comply with, the FAA ADs listed in Table 1 within a specified timeframe. The text indicates this is an adoption of State of Design ADs for these aircraft (Requirements 1 & 2; Table 1; Compliance). Nothing in the instrument indicates an expansion or narrowing of that stated purpose."},"complexity_factors":["Multiple referenced FAA ADs to review: 13 ADs listed in Table 1 covering different components and years (Table 1).","Applicability determination per aircraft: operators must assess applicability based on manufacture date, configuration and modifications (Background: \"not all the ADs listed ... will be applicable\").","Fixed short compliance window: actions must be completed within 30 days or before issuing a certificate of airworthiness, whichever is later (Compliance).","Obligation to perform whatever the FAA AD prescribes if applicable and not already accomplished — may require inspections, replacements or modifications and sourcing parts/maintenance resources (Requirement 2).","Regulatory interaction: CASA imports State of Design (FAA) ADs into Australian compliance framework, creating dependency on foreign AD content and timing (Background: \"CASA has determined that these ADs may be applicable\").","Administrative burden: recordkeeping and demonstrating compliance to support airworthiness certification (Requirements 1 & 2; Compliance).","Timing uncertainty: some FAA AD compliance times may already have passed for some aircraft, so operators must reconcile historical maintenance with directive requirements (Background: \"compliance times may or may not have passed\")."],"plain_english_summary":"Requires operators of Bell OH-58A (206A-1) helicopters on the Australian register to check whether the FAA Airworthiness Directives listed in Table 1 apply to their aircraft and, if an AD is applicable and not already done, to carry out the actions that AD requires. Compliance is required within 30 days of this Directive or before issue of a certificate of airworthiness. CASA states the measure ensures State of Design ADs are met for Australian-registered helicopters."},"kimi_summary":{"content_quality":"ok","complexity_score":3,"scope_assessment":{"changed":false,"description":"This directive maintains its original narrow scope — ensuring Australian-registered Bell OH-58A helicopters comply with relevant US FAA safety directives. It does not expand beyond this specific aircraft type and safety coordination purpose."},"complexity_factors":["Short, single-purpose directive with only 2 substantive requirements","No defined terms section — relies on external FAA AD references","Simple conditional logic: 'if applicable and not previously accomplished, then comply'","Single table with 13 external references (FAA AD numbers) that must be cross-referenced","No nested exceptions or complex procedural steps","Straightforward compliance deadline (30 days or prior to certificate issuance)"],"plain_english_summary":"Owners/operators of Australian-registered Bell OH-58A (206A-1) helicopters must check whether any of the 13 specified US FAA airworthiness directives listed in Table 1 apply and, if so, complete the required repairs, inspections or modifications. Compliance is mandatory within 30 days of the directive taking effect (or before issuing an airworthiness certificate). \n\nThis AD ensures these helicopters meet the State-of-Design safety standards for critical components like rotors, drive and engine warning systems."},"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"}},"importantCases":[],"_links":{"self":"/api/acts/ad-oh-58-1-state-of-design-airworthiness-directives","history":"/api/acts/ad-oh-58-1-state-of-design-airworthiness-directives/history","analysis":"/api/acts/ad-oh-58-1-state-of-design-airworthiness-directives/analysis","conflicts":"/api/acts/ad-oh-58-1-state-of-design-airworthiness-directives/conflicts","importantCases":"/api/acts/ad-oh-58-1-state-of-design-airworthiness-directives/important-cases","documents":"/api/acts/ad-oh-58-1-state-of-design-airworthiness-directives/documents"}}