{"id":"F2006B04087","name":"AD/BEECH 60/27 Amdt 1 - Strobe Light Bounding Straps","slug":"ad-beech-60-27-amdt-1-strobe-light-bounding-straps","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":43760,"registerId":"commonwealth-F2006B04087-current","compilationNumber":null,"startDate":"2026-04-02","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/BEECH 60/27 Amdt 1 - Strobe Light Bounding Straps","content":"---\nmeta-content-style-type: text/css\nmeta-content-type: application/xhtml+xml; charset=utf-8\nmeta-generator: Aspose.Words for .NET 22.10.0\n---\n\n?xml version=\"1.0\" encoding=\"utf-8\" standalone=\"no\"?>\n\nCOMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 105 CIVIL AVIATION SAFETY AUTHORITY\n\nSCHEDULE OF AIRWORTHINESS DIRECTIVES\n\n \n\n![](image.001.png)  Beechcraft 60 (Duke) Series Aeroplanes\n\n \n\nAD/BEECH 60/27\n\nAmdt 1\n\n\nStrobe Light Bounding Straps 11/74\n\n \n\nApplicability: All model A60 & B60, S/Nos. P-223 thru P-307, P-309 and P-310, fitted with Grimes P/N 30-0467-1 or Grimes P/N 30-0467-3 strobe light assemblies.\n\n \n\nRequirement: Action in accordance with Beechcraft SI No. 0655-362, Rev. 1. Compliance:  Within 100 hours’ time in service after 31 January 1975.\n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n","sortOrder":0}],"analysis":{"flash_summary":{"complexity_score":2,"scope_assessment":{"changed":false,"description":"The instrument is labelled as \"Amdt 1,\" but the supplied text contains only the amended directive itself (Applicability, Requirement, Compliance). The document does not include the original version or compare previous scope to the current text, so a determination whether the scope has changed from the original cannot be made from the supplied material alone."},"complexity_factors":["Narrow applicability: limited to A60 & B60 models with specified serial numbers and specific Grimes strobe light part numbers (Applicability).","External technical reliance: the AD mandates compliance with Beechcraft SI No. 0655-362 Rev. 1 rather than listing technical steps, so implementers must obtain and follow that separate document (Requirement).","Fixed, short compliance window: mandatory completion within 100 hours time in service after a calendar date requires operators to schedule work into maintenance cycles (Compliance).","Regulatory enforcement: the directive converts manufacturer guidance into a regulatory obligation under the Civil Aviation Regulations, creating legal compliance requirements and recordkeeping burdens (header and Requirement)."],"plain_english_summary":"What this instrument does mechanically\n\n- This is an airworthiness directive issued under the Civil Aviation Regulations and published by the Civil Aviation Safety Authority (header: \"Civil Aviation Regulations 1998, PART 39 - 105 CIVIL AVIATION SAFETY AUTHORITY\"). It requires operators to carry out maintenance or modification work specified in a Beechcraft service instruction. (See \"Requirement\".)\n\nWho it affects\n\n- It applies to Beechcraft Model A60 and B60 aeroplanes with serial numbers P-223 through P-307, P-309 and P-310, only if they are fitted with Grimes strobe light assemblies P/N 30-0467-1 or P/N 30-0467-3. (See \"Applicability\".)\n\nWhat operators must do and when\n\n- Operators must perform the work described in Beechcraft Service Instruction No. 0655-362, Revision 1. The AD sets a mandatory compliance window of within 100 hours time in service after 31 January 1975. (See \"Requirement\" and \"Compliance\".)\n\nWho pays and who decides\n\n- The regulator (Civil Aviation Safety Authority) imposes the requirement; affected aircraft owners/operators must pay for and arrange the work. The specific technical steps and any parts required are in Beechcraft SI No. 0655-362 Rev. 1, which the AD makes mandatory. (See header and \"Requirement\".)\n\nWhy this matters (stated and implied)\n\n- The text does not state an explicit safety finding or narrative reason. The AD title and the mandatory direction to follow a service instruction indicate the regulator requires a defined change to the strobe light bounding straps on the listed aircraft and equipment. That is the operational effect: owners must cause that maintenance to be performed to comply with the AD. (See title and \"Requirement\".)\n\nPractical trade-offs, incentives and implementation notes\n\n- Compliance burden: The AD converts steps in a manufacturer service instruction into a regulatory obligation; operators must arrange labour and any parts the SI calls for and keep records to show they complied within the 100-hour window. The text itself does not list parts, costs, or man-hours; those are contained in Beechcraft SI No. 0655-362 Rev. 1 which the AD references. (See \"Requirement\".)\n\n- Timing and operational cost: The 100-hours-in-service deadline creates an operational schedule pressure: owners must fit the work into maintenance cycles within that time. (See \"Compliance\".)\n\n- Market effects and incentives: Making a specific manufacturer service instruction mandatory concentrates demand on qualified maintenance providers and on the specified strobe-light part numbers (Grimes P/N 30-0467-1 and 30-0467-3) where parts or kit items are required. This creates identifiable costs to aircraft owners and possible revenue for maintenance/parts suppliers. (See \"Applicability\" and \"Requirement\".)\n\n- Implementation risk and discretion: The AD refers to an external technical document (Beechcraft SI No. 0655-362 Rev. 1). The regulator enforces compliance with that document; the AD text itself does not detail the technical steps, so enforcement and interpretation depend on the SI’s content and on maintenance approval processes. That creates implementation dependence on the SI and on authorised maintenance organisations. (See \"Requirement\".)\n\n- Scope and substitution effects: The AD only applies to specific models, serial numbers and strobe assembly part numbers; operators using different strobe equipment or aircraft outside the serial ranges are not captured. Where an operator has a different strobe assembly fitted, there is no obligation under this AD as written. (See \"Applicability\".)\n\nSummary statement\n\n- In short: this directive makes compliance with Beechcraft Service Instruction No. 0655-362 Rev. 1 mandatory for the listed Beechcraft 60-series aeroplanes that have the specified Grimes strobe lights, and requires that work to be completed within 100 hours time in service after 31 January 1975. The regulator prescribes the action; aircraft owners/operators must bear the cost and schedule the work. (See header, \"Applicability\", \"Requirement\", \"Compliance\".)"},"kimi_summary":{"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This is a standard airworthiness directive with narrow, specific applicability. It addresses a single technical issue (strobe light straps) on a limited fleet of aircraft. There is no evidence of scope creep; the directive remains tightly focused on its original safety purpose."},"complexity_factors":["Very short document (approximately 150 words)","Only 2 defined part numbers and specific serial number ranges","Single requirement referencing an external technical document (Beechcraft Service Instruction)","No nested exceptions or conditional logic","Simple compliance deadline structure (hours in service after fixed date)","Narrow applicability clause with clear aircraft model and serial number identification"],"plain_english_summary":"This is a **safety directive for specific Beechcraft aeroplanes**.\n\n**What it does:**\nOrders owners and operators of certain Beechcraft Duke aircraft (models A60 and B60 with specific serial numbers) to inspect or fix the **strobe light bounding straps** — these are straps that hold the aircraft's strobe lights in place. The work must follow Beechcraft's own Service Instruction No. 0655-362, Revision 1.\n\n**Who it affects:**\n- Owners and operators of Beechcraft 60 (Duke) series planes\n- Specifically: serial numbers P-223 through P-307, plus P-309 and P-310\n- Only if the plane has Grimes strobe light assemblies (part numbers 30-0467-1 or 30-0467-3)\n\n**Why it matters:**\nStrobe lights are high-visibility flashing lights on aircraft. If the straps holding them fail, the lights could detach during flight — creating a safety hazard. This directive ensures the straps are checked and fixed before they fail.\n\n**Deadline:**\nThe work must be done within **100 hours of flying time** after 31 January 1975."}},"importantCases":[],"_links":{"self":"/api/acts/ad-beech-60-27-amdt-1-strobe-light-bounding-straps","history":"/api/acts/ad-beech-60-27-amdt-1-strobe-light-bounding-straps/history","analysis":"/api/acts/ad-beech-60-27-amdt-1-strobe-light-bounding-straps/analysis","conflicts":"/api/acts/ad-beech-60-27-amdt-1-strobe-light-bounding-straps/conflicts","importantCases":"/api/acts/ad-beech-60-27-amdt-1-strobe-light-bounding-straps/important-cases","documents":"/api/acts/ad-beech-60-27-amdt-1-strobe-light-bounding-straps/documents"}}