{"id":"F2006B03982","name":"AD/BEECH 55/34 Amdt 1 - Landing Gear Shock Strut Piston","slug":"ad-beech-55-34-amdt-1-landing-gear-shock-strut-piston","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":43591,"registerId":"commonwealth-F2006B03982-current","compilationNumber":null,"startDate":"2026-04-02","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/BEECH 55/34 Amdt 1 - Landing Gear Shock Strut Piston","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 55, 58 and 95-55 (Baron) Series Aeroplanes\n\n \n\nAD/BEECH 55/34\n\nAmdt 1\n\n\nLanding Gear Shock Strut Piston 1/74\n\n \n\nApplicability: All model 95-B55 with S/Nos. TC-1552 to TC-1607 except TC-1557, TC-1558, TC- 1559 and TC-1604.\n\n \n\nAll model E55 and E55A with S/Nos. TE-914 to TE-940 except TE-919, TE-920 and TE-938.\n\n \n\nAll model 58 & 58A with S/Nos. TH-325 to TH-383 except TH-336, TH-337, TH-363 and TH-382.\n\n \n\nRequirement: Action in accordance with Beechcraft SI No. 0612-200.\n\n \n\nCompliance: Within 100 hours’ time in service after 31 January 1974 unless already accomplished.\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":true,"description":"The document is marked \"Amdt 1,\" which indicates it modifies an earlier AD. The present text sets the applicable serial-number ranges, exceptions, the mandated action (Beechcraft SI No. 0612-200) and the compliance interval (100 hours TIS after 31 January 1974). The earlier version is not included here, so the exact nature of the amendment (what was added, removed or altered) cannot be identified from this text alone."},"complexity_factors":["Narrow, specific applicability defined by model and serial-number ranges with listed exclusions (Applicability).","Prescriptive single compliance method that references an external document (Beechcraft SI No. 0612-200) rather than reproducing technical steps (Requirement).","Fixed compliance window tied to flight hours after a calendar date (100 hours TIS after 31 January 1974) rather than a calendar deadline, requiring operators to track time in service (Compliance).","Lack of alternative methods or exemptions stated in the text increases operational inflexibility but simplifies legal reading.","Labelled as an amendment (\"Amdt 1\"), which implies prior changes exist; absence of the original text prevents direct comparison within this document."],"plain_english_summary":"This Airworthiness Directive mandates that specific serial‑numbered Beechcraft 95‑B55, E55/E55A and 58/58A aeroplanes undergo the work described in Beechcraft Service Instruction No. 0612‑200 within 100 flight hours after 31 January 1974 (unless already done). It creates a legal compliance obligation on owners/operators and maintenance organisations, who bear the cost and must follow that single prescribed method; the AD itself gives no technical rationale or alternative compliance route."},"kimi_summary":{"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This is a narrow, targeted safety directive focused on a specific mechanical defect in specific aircraft. It has not expanded beyond its original purpose of mandating a particular maintenance action for landing gear components."},"complexity_factors":["Very short document (under 200 words)","Only 4 defined elements: applicability (specific aircraft models/serial numbers), requirement (single reference to manufacturer service instruction), compliance deadline, and excluded serial numbers","No cross-references to other legislation or regulations beyond the parent Civil Aviation Regulations 1998","Simple conditional logic: 'unless already accomplished' is the only exception","Single technical requirement with clear deadline","No nested definitions or interpretive provisions"],"plain_english_summary":"**What this is:** This is an **Airworthiness Directive (AD)** — a mandatory safety order issued by Australia's Civil Aviation Safety Authority (CASA). Think of it as a \"recall notice\" for aircraft, but legally binding.\n\n**What it does:** It requires owners and operators of specific **Beechcraft Baron aeroplanes** (models 95-B55, E55, E55A, 58, and 58A) to inspect or replace the **landing gear shock strut piston** — a critical component that absorbs impact when the plane lands.\n\n**Who it affects:** Only specific aircraft with particular serial numbers (listed in the \"Applicability\" section). Some serial numbers are explicitly excluded from this requirement.\n\n**What must be done:** Follow the instructions in **Beechcraft Service Instruction No. 0612-200** — a technical document from the manufacturer detailing the required maintenance.\n\n**When it must be done:** Within **100 hours of flight time** after 31 January 1974, unless the work was already completed.\n\n**Why it matters:** Faulty landing gear components can cause gear collapse on landing, potentially destroying the aircraft and endangering lives. This directive ensures a known defect is fixed before it causes an accident."}},"importantCases":[],"_links":{"self":"/api/acts/ad-beech-55-34-amdt-1-landing-gear-shock-strut-piston","history":"/api/acts/ad-beech-55-34-amdt-1-landing-gear-shock-strut-piston/history","analysis":"/api/acts/ad-beech-55-34-amdt-1-landing-gear-shock-strut-piston/analysis","conflicts":"/api/acts/ad-beech-55-34-amdt-1-landing-gear-shock-strut-piston/conflicts","importantCases":"/api/acts/ad-beech-55-34-amdt-1-landing-gear-shock-strut-piston/important-cases","documents":"/api/acts/ad-beech-55-34-amdt-1-landing-gear-shock-strut-piston/documents"}}