{"id":"F2006B04208","name":"AD/BEECH 90/14 - Elevator Tab Hinge Beam - Inspection","slug":"ad-beech-90-14-elevator-tab-hinge-beam-inspection","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":43964,"registerId":"commonwealth-F2006B04208-current","compilationNumber":null,"startDate":"2026-04-02","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/BEECH 90/14 - Elevator Tab Hinge Beam - Inspection","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 90 and 65-90 (King Air) Series Aeroplanes\n\n \n\nAD/BEECH 90/14 Elevator Tab Hinge Beam - Inspection 7/68\n\nApplicability: All models in excess of 1000 hours total time in service.\n\n \n\nRequirement: Inspect the upper and lower flanges of the LH and RH elevator tab hinge beam P/N 50-610000-94 for cracking along the rivet line.\n\n \n\nCompliance: Forthwith and thereafter at intervals not exceeding 200 hours’ time in service.\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":{"kimi_summary":{"content_quality":"ok","complexity_score":1,"scope_assessment":{"changed":false,"description":"This is a discrete, targeted safety directive focused on a specific known defect in a specific aircraft type. It has not expanded beyond its original purpose of addressing elevator tab hinge beam cracking in high-time Beechcraft King Air aircraft."},"complexity_factors":["Single, specific aircraft type (Beechcraft 90 series)","Clear applicability threshold (1000+ hours total time)","One discrete inspection task with explicit part number","Simple compliance schedule (immediate + 200-hour recurring interval)","No defined terms, cross-references, or conditional exceptions","Total length: approximately 100 words of substantive content"],"plain_english_summary":"This is an **Airworthiness Directive** — a mandatory safety order issued by Australia's Civil Aviation Safety Authority (CASA). It applies to specific **Beechcraft King Air aircraft** (models 90 and 65-90 series) that have flown more than **1,000 hours total**.\n\n**What it requires:**\n- **Inspect** the left and right elevator tab hinge beams (part number 50-610000-94) for cracks forming along the rivet lines\n- Check both the **upper and lower flanges** (the flat, projecting edges of the metal beam)\n\n**When to comply:**\n- **Immediately** (\"forthwith\") — meaning as soon as practically possible\n- Then **repeat the inspection every 200 flight hours**\n\n**Why it matters:**\nElevator tabs control the aircraft's pitch (nose up/down). Cracks in the hinge beam could cause control failure, potentially leading to loss of control of the aircraft. This directive prevents catastrophic accidents by catching fatigue cracks before they cause structural failure."},"flash_summary":{"complexity_score":2,"scope_assessment":{"changed":false,"description":"The supplied text sets out a targeted inspection obligation for a specified part on specified aircraft and specifies the initial applicability (>1,000 hours) and a recurring 200-hour interval. The document does not indicate any change to that scope within the supplied text."},"complexity_factors":["Narrow, specific applicability (Beechcraft 90 / 65-90 series with >1,000 hours TIS). (Applicability)","Single, clearly defined inspection task with a quoted part number (P/N 50-610000-94). (Requirement)","Recurring compliance interval specified (every 200 hours). (Compliance)","No corrective action, inspection acceptance criteria, or alternative compliance measures provided in the supplied text, which could create practical ambiguity for follow-up steps. (Requirement)","Mandatory immediate action ('forthwith') creates scheduling urgency but the procedural detail is minimal. (Compliance)"],"plain_english_summary":"This directive requires owners/operators of Beechcraft 90/65‑90 series aeroplanes with over 1,000 hours TIS to begin and then repeat a targeted inspection of the elevator tab hinge beam flanges for cracking every 200 hours. It imposes an immediate, recurring maintenance task that increases inspection workload and potential follow‑on repairs, aiming to detect rivet‑line cracking and protect structural integrity of the affected fleet."}},"importantCases":[],"_links":{"self":"/api/acts/ad-beech-90-14-elevator-tab-hinge-beam-inspection","history":"/api/acts/ad-beech-90-14-elevator-tab-hinge-beam-inspection/history","analysis":"/api/acts/ad-beech-90-14-elevator-tab-hinge-beam-inspection/analysis","conflicts":"/api/acts/ad-beech-90-14-elevator-tab-hinge-beam-inspection/conflicts","importantCases":"/api/acts/ad-beech-90-14-elevator-tab-hinge-beam-inspection/important-cases","documents":"/api/acts/ad-beech-90-14-elevator-tab-hinge-beam-inspection/documents"}}