{"id":"F2006B04302","name":"AD/BEECH 95/30 - Elevator Trim Tab Actuator","slug":"ad-beech-95-30-elevator-trim-tab-actuator","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":44113,"registerId":"commonwealth-F2006B04302-current","compilationNumber":null,"startDate":"2026-04-02","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/BEECH 95/30 - Elevator Trim Tab Actuator","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 95 (Travelair) Series Aeroplanes\n\n \n\nAD/BEECH 95/30 Elevator Trim Tab Actuator 2/92\n\nApplicability: Models and serial numbers as listed in Beechcraft Service Bulletin 2399. Requirement:              Action in accordance with mandatory Beechcraft Service Bulletin 2399.\n\nNote: FAA AD 91-17-01 Amdt 39-7099 refers.\n\n \n\nCompliance: At the next scheduled inspection for Maintenance Release issue after 29 February 1992.\n\n \n\nBackground:  There have been two fatal accidents reported, in which the elevator trim tab actuators were reversed following maintenance. The actions specified in this Directive are intended to prevent interchanging the right-hand and left-hand trim tab actuators that, if reversed, could result in loss of control of the aircraft.\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 directive's scope matches its stated purpose: it targets the models/serial numbers listed in Beechcraft Service Bulletin 2399 and requires the SB actions at the next scheduled inspection to prevent interchange of left- and right-hand elevator trim tab actuators; the instrument contains no provision indicating a change from that stated intent."},"complexity_factors":["Requirement delegates technical detail to an external document (Beechcraft Service Bulletin 2399) rather than specifying procedures in the AD (\"Requirement: Action in accordance with mandatory Beechcraft Service Bulletin 2399\").","Applicability is defined by reference to models and serial numbers in the Service Bulletin, requiring operators to consult records to determine coverage (\"Applicability: Models and serial numbers as listed in Beechcraft Service Bulletin 2399\").","Compliance timing is flexible but constrained: work must occur at the next scheduled maintenance-release inspection after a fixed date, which creates a predictable window but requires record-keeping and scheduling adjustments (\"Compliance: At the next scheduled inspection for Maintenance Release issue after 29 February 1992\").","Safety-critical consequence increases implementation priority for operators: the Background notes two fatal accidents and the risk of loss of control if actuators are reversed (\"Background: There have been two fatal accidents... could result in loss of control of the aircraft\").","Mandatoriness reduces operator discretion: the AD makes the Service Bulletin actions mandatory rather than advisory (use of term \"mandatory\" in Requirement).","Inter-jurisdictional reference: the AD notes a related FAA AD (\"Note: FAA AD 91-17-01 Amdt 39-7099 refers\"), which can add coordination or record-checking steps for internationally maintained aircraft."],"plain_english_summary":"Requires operators of specified Beechcraft 95 (Travelair) aircraft to carry out the mandatory actions in Beechcraft Service Bulletin 2399 at the next scheduled maintenance-release inspection after 29 February 1992 to prevent swapping left- and right-hand elevator trim tab actuators. It applies to the models and serial numbers listed in that service bulletin and matters because reversed actuators have been linked to two fatal accidents and can cause loss of control."},"kimi_summary":{"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This is a discrete, targeted safety directive addressing a specific mechanical defect in a specific aircraft series. It has not expanded beyond its original purpose of preventing trim tab actuator reversal."},"complexity_factors":["Single operative requirement: comply with external document (Beechcraft Service Bulletin 2399)","No defined terms section — relies entirely on external technical reference","Simple conditional trigger: 'next scheduled inspection after fixed date'","No nested exceptions or cross-references to other legislation beyond a single FAA AD note","Extremely short — one substantive paragraph of requirements plus background"],"plain_english_summary":"This is an **Airworthiness Directive** (a mandatory safety order) issued by Australia's Civil Aviation Safety Authority for **Beechcraft 95 (Travelair) series aeroplanes**.\n\n**What it does:**\n- Requires owners/operators of specific Beechcraft 95 models to follow **Beechcraft Service Bulletin 2399** — a manufacturer-issued maintenance instruction.\n- The bulletin prevents mechanics from accidentally swapping the **left-hand and right-hand elevator trim tab actuators** (small mechanical devices that help control the plane's pitch).\n\n**Why it matters:**\n- Two fatal accidents occurred because these actuators were installed on the wrong sides during maintenance.\n- If reversed, the pilot's trim controls work backwards — pulling up makes the plane dive, and vice versa — causing **loss of aircraft control**.\n\n**Who must comply:**\n- Operators of affected Beechcraft 95 models (specific serial numbers listed in the Service Bulletin).\n\n**When:**\n- By the next scheduled inspection for issuing a **Maintenance Release** (Australia's certificate that an aircraft is airworthy) after 29 February 1992.\n\n**Key point:** This is a **retrospective safety fix** — it applies to existing aircraft, not new designs, and mandates a specific maintenance procedure to prevent deadly installation errors."}},"importantCases":[],"_links":{"self":"/api/acts/ad-beech-95-30-elevator-trim-tab-actuator","history":"/api/acts/ad-beech-95-30-elevator-trim-tab-actuator/history","analysis":"/api/acts/ad-beech-95-30-elevator-trim-tab-actuator/analysis","conflicts":"/api/acts/ad-beech-95-30-elevator-trim-tab-actuator/conflicts","importantCases":"/api/acts/ad-beech-95-30-elevator-trim-tab-actuator/important-cases","documents":"/api/acts/ad-beech-95-30-elevator-trim-tab-actuator/documents"}}